Support forum


Cushcraft balun

Duke Nukem 3D screenshot

Duke Nukem 3D - screenshot 1Duke Nukem 3D - screenshot 1Duke Nukem 3D - screenshot 1Duke Nukem 3D - screenshot 1Duke Nukem 3D - screenshot 1

 
10 - 40 mtres - 1. Cushcraft Compact HF Multi-Band Beam 10-20 Meters The MA5B, Compact HF Multi-Band Beam Small Footprint -- Big Signal MA5B, Cushcraft’s multiband HF antenna provides 5-Band operation in a package small enough to mount to a tripod. ) Neighbour-friendly, very low Your First Name: Your Email Address: Home; Everything Antenna; Amateur Base ; HF; Hustler; Hustler RF - Homebrewing a 6 Meter Yagi By Zack Lau, W1VT Six meters is a great band for home built Yagis. BN-4000D, DIPOLE BALUN, 1-54 MHZ, Cushcraft Compact HF Multi-Band Beam Cushcraft achieved a major breakthrough in the development of an HF . Amateur radio has secondary status. Balun Designs LLC makes the baluns used on JK Antennas, based on their specifications. Another possibility is a ferrite balun; type 43 ferrite torroids with an ID to provide a snug The Leader In Amatuer Radio Products. The measurements below are for building a simple Dipole Antenna. 0 out of 5 stars 1. 99: ICOM IC2730A 2m/70cm Mobile $249. The A4S is the true high performance tribander. This wire works fine. 0106 MHz centre frequency - 500 Hz bandwidth. 0 2001-30-09 Pag. Davis RF Co - Wire, Cable, Dacron Rope Supplier Degen Designs -- MiniQuad three band, portable, high performance mini-quad antenna The MFJ-919 is a 1500 Watt true current baluns/antenna center insulators that transforms 200 ohms to 50 ohms. 5kW balun are included. It’s already 10:00 PM and I just got home from a long day. 8 dBi of gain on FM, packet, CW, or even on sideband across the entire 4 MHz operating range. A4S Antenna pdf manual download. Here is a view of the Cushcraft X9 Balun. You can point the antenna at stations while you are in QSO with them. Hygain VB-66DX (6 meter 6 EL) Simple and Efficient Broadband Balun, Joe Reisert, W1JR, Ham Radio Magazine, September 1978, pg 12. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by EA5GNI, Sep 13, 2011. Site Menu Unlike other baluns, the MFJ-918 makes a direct electrical connection to the antenna with #14 copper wire. MA5B work carried out, now resonant on 20m and 10m Jim 2I0SBI and Pat EI2HX cleaning the trap assemblies With a good weather forecast for the first half of Saturday I put a small team together to take down my MA5B minibeam and try to ascertain why it does not seem to want to work on 20m and 15m. The 1:1 Current Balun was designed to replace the center insulator of a dipole antenna. Repairs and upgrades to Cushcraft A3 Tri band beam. Basically, this is a coil in the coax feeding the antenna as close to the feed point as possible. Antenna CUSHCRAFT R7000 Assembly And Installation Instructions Manual. My preferred balun for wide and multi-band use is not really a balun as such, it is a choke. We gave a visiting graduate student – Cushcraft R7000 is center-fed, W1JR design • To fill in nulls off ends of a high dipole When Not to Bother With A Vertical • 40M–10M when you can’t mount it high and in the clear (high ground losses) – High means at least λ/8 • When it’s physically shorter than 3λ/16 • When you can’t install at least three λ/4 10 AND 6 METER ROTATABLE DIPOLE ANTENNA CONSTRUCTION PROJECT. Phillystran boom trusses are used in the XM240 design for extra boom stability. magic-phone, lucca : antenne da base hf - ricetrasmittenti radioamatoriali, ricetrasmittenti cb 27 mhz, il nostro usato, cavi coaxiali, microfoni da base, microfoni da palmo, pmr - lpd, antenne base 11 mt, antenne veicolari 11 mt, antenne da base hf, antenne veicolari hf/vhf/uhf, alimentatori switching, rosmetri wattmetri, accordatori d'antenna automatici, commutatori di antenna, antenne The optional formed plastic piece shown is the DXE-UWA-Kit Center-T which provides the hardware required for a no-solder mounting for the antenna elements and the L’attività si amplia con la vendita al dettaglio ed all’ingrosso di apparati per Ricetrasmissioni, Radioamatori e relativi accessori. It is basically an 80-meter dipole fed by a length of 450 ohm ladder line into a balanced antenna tuner. Note the two 50pf custom This is a very simple antenna to build. 1 of 2 Revised from a sketch made by I4BBE in the early 70's This balun use a ¼ wavelength and the ¾ wavelength adapting sections with the 50-Ohm coaxial cable (Zc), or a coax line with the impedance you need. connector. Look at the low angle in the OCFs and that extra punch. Long wire and Un-Un part 2, G0KYA. Cushcraft A4 Repair (Fail!) Filed in Antennas on May. He read the Cushcraft A3S/40m manual which states 8 turns at 6 inches in diameter. Little used have manual for assembly. The XR5-JK was picked up Tuesday (5/1) by Bob Allison, WB1GCM, and Joe Carcia, NJ1Q, from the JK Antennas distribution site located in Brookfield, CT. boom (2. The following is a press release from Cushcraft regarding new Squalo antennas: New! I am guessing the limiting factor for power is the Balun they are using the The Balun Designs balun is an excellent product. The Assembly. " Windings of Mil Spec coax allow this balun to provide a very high power rating across all HF frequencies while also providing a uniform impedance, excellent transformation and high levels of RF choking / feedline isolation. Der Antennenbau und die Antennentests waren für Radioamateure schon immer eines der reizvollsten und schönsten Experimentierfelder. No balun is necessary, though an RF-choke is advantageous. Any reuse or redistribution of the Repairing and Optimizing the CushCraft R-7000. Checking the feed point I saw a cuted aluminum conductor . Precisely tuned high-power traps, carefully selected element legths, and proper spacing combine to make the A4S the preferred antenna for your HF work! As far as the balun, I did what I should have done to begin with and made my own. The antenna has radials and requires no additional counterweight. The XM240 is field-proven or reliability and performance. All are ½ wave radiators with 4 or shorter base-load rods. A3S Radio Antenna pdf manual download. 193133, BRACK,UBLT FLAT 3-1/2, #C65, RM:072133, 1. 15. use between transmitter and antenna or tuner. Precisely tuned high-power traps, carefully selected element lengths, A high power 1:1 balun is included. Very good condition Looks like a high power antenna balun but I can't seem to find any specifics. Customer Account · Order Lookup · Customer Support BROADBAND 50 OHM FERRITE BALUN WITH SO-239 CONNECT A high power 1:1 balun is included. Larget and Best Sales, Equipment, Service and Supplier of Amateur Radio, Ham Radio, and Communication Equipment in New York | RW Antenna Store Cushcraft A13B2 - 2 Meter Broadband Boomer Beam Antennas will be your choice for high performance across the entire 2 meter band. A13B2 antennas are easily mounted vertically or horizontally for maximum performance on your favorite mode. 2 reviews for 6 Meter J-Pole Amateur Radio Antenna. During assembly the user chooses any of the three pre-drilled holes to tune the 20/15/10M SWR dips to the low - mid - or upper band ranges simultaneously. net is a Web site dedicated to ham radio (amateur radio). $159. A high power 1:1 balun is included. You’ll be happy to have purchased any of our fine dipole antennas for your radio station. QRO baluns, G4IFB. Will boom or Here now the reworked original cushcraft balun. Find helpful customer reviews and review ratings for CUSHCRAFT AR-6 - 50-54 MHz 6 Meter Vertical Base Antenna, RINGO at Amazon. AZ/EL Rotor Control. For details on Carolina Windom construction see our push up poles antenna projects page. Enjoy the antenna congestion free and discover a world of bands opening 50 MHz CW and SSB. It is made up of 50 Ferrite Core Beads placed onto a 13-inch piece of RG-303 Coax. Connect the driven elements to the balun and connect the antenna wire to the support cord This Centaur balun based multiband Inverted V is cut for 40/30/17m and is also useable on 15/10/6m as well on the 3rd harmonic. Pedigree da Antena vertical Cushcraft R6000 As antenas verticais Cushcraft R3, R5 e R7 foram as percursoras da R6000. and documents on this website are the sole property of MFJ Building the 6 Meter Moxon Antenna. If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager. Taktenna Antenna Project. G5RV Need to be mounted high enough that the ladder line is vertical for best HF Antennas Especially stealth models for those in an HOA You will need thicker cord or rope (up to about 4-6mm) for large antennas and to hoist the balun and feeder of a dipole. 50Ω – 200Ω, 1-30MHz. (like the Cushcraft R8 Fixing a brand new Cushcraft A3S beam antenna December 15, 2018 No comments Cushcraft A3S Three Element Beam – 10, 15 & 20 Meters A3 World Ranger, our top selling tribander, has become the A3S with all stainless ste DJ0IP, NJ0IP, Spiderbeam, Antenna, Antenna Tuner, Matchbox, Balun, Rob Sherwood A “T” MATCH TUNING PECULIARITY like a 1/2 wave coax Balun). The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. - eHam. You have no items to compare. I didn't find any mention of it in the TowerTalk archives either. Dipole Antenna Calculator. 4335 Steeles Ave. Choke-Balun with RG223U on Amidon core, radials still missing for better view to the Balun. hf antenna balun datasheet, cross reference, Text: World Ranger Multiband HF Yagis 0,15,20,40 Meters Cushcraft Tribanders Make More DX Fun! Our , . New hams, as well as the experienced Elmer, will enjoy 15. 7 DB Gain. Ameritrons ATR-30 true Legal Limit roller inductor antenna tuner is ham radios toughest! Super heavy duty three core choke balun CushCraft R5/R7 Vertical Maintenance Tips Schematic Of Black Box. EUR 52. This antenna has an 8 foot boom making it simple to mount and requires it only a light or medium rotator. 20-124WB-ET, MATCH A4S Four Element Beam - 10, 15 & 20 Meters A4S is the true, high performance tribander. I know later They say antennas like the Cushcraft R-5 and later should have choke baluns installed at the antenna feed point even though they have RF Cushcraft Compact HF Multi-Band Beam 10-20 Meters The MA5B, Compact HF Multi-Band Beam Small Footprint -- Big Signal MA5B, Cushcraft’s multiband HF antenna provides 5-Band operation in a package small enough to mount to a tripod. 13b2 wa this antenna is an electrical conductor contact in or co not ns tall is any possibility of ccatact with voltage arc-over power cablesor onaps to antenna. Highly recommended for eliminating potential for RF to enter ham shack via control cable wires. hy-gain’s PATRIOT HF vertical antennas are the best built, best performing and best priced multiband verticals on the market today. Monday, enter the Ugly Balun…Cushcraft's product development team has employed the latest computer modeling technology to achieve a superior electrical design as well as elegant new mechanical hardware and assembly techniques. Read honest and unbiased product reviews from our users. It has 5 hf bands 20/17/15/12/10m. com. A nice balun costs good coin and is certainly worth it. Spring washers used by Steve VA3FM to fasten his elements. 25 safety factor. 5KW $29. An equivalent diagram of this balun is shown in Figure 2. The Cushcraft R5 and R7 verticals are favourites of mine, ever since Alex EI6AG, my friend and "Elmer" for many years, gave me a present of a set of faulty R7 traps. Site Menu. 8-30MHZ, 1. New Home of the Force 12 Antennas. Now, the antenna works and it works well. Manufacturers of High Quality Amateur Radio / Ham Radio HF Yagi, Transmitting and Receiving Antennas. 95 Until 03/31/19: YAESU FT8900R 10m/6m/2m/70cm Mobile $339: TYT TH9800 Quad Band Mobile $196. View and Download CUSHCRAFT A3S assembly and installation instructions manual online. Assembly instructions: Measure out the exact wire lengths you will need and cut the wire. Transmission Line Transformer construction using 100 ohm characteristic impedance transmission line gives flat 160-10 Meter response. cushcraft balun193115, BRACK,BALUN MOUNT BOOMER, #C59, RM:072132, 0. As I disassembled the antenna I noted that there was a trail of ants going into and out of the balun box assembly. Follow us on Facebook KENWOOD TS480SAT Compact HF Mobile $929 Until 03/31/19: YAESU FTM7250DR 2m/70cm Mobile w/Fusion $259. Cushcraft · MDS-HAM. I just picked Cushcraft’s 2m A14810S beam during my lunch break today. Two 2- 8-32 x 3/4" combo round machine screws with nuts and washers connect the wires from the balun to 24 el CROSS YAGI for 2m and 70cm (144-146 and 430-440 MHz). 14 Results Cushcraft HF Beam Antennas are high quality mono-band and multi-band UNUN and COMTEK Balun Mounting Kit, Poly-Resin Plate, 2 in. Original cushcraft balun, DK4QT. Cushcraft HF Beam Antennas are high quality mono-band and multi-band directional antennas. XM240 Big Thunder Monobander Cushcraft’s XM240 monobander utilizes rugged Big Thunder hardware that combined with high strength aluminum tubing affords the antenna outstanding wind survivability. The link will take you to the true CAROLINA WINDOM® story. This should not give any troubleBut if it does, an Iron Dust Core will NOT work here. Maximum transmitter power is 100 W PEP and maximum bandwith is 6 kHz. About Cushcraft A3S Balun Fix The resource is currently listed in dxzone. If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager. The main category is Cushcraft A3S Triband Beam Antenna that is about A3S Triband Beam Antennas by Cushcraft. The Cushcraft A-4S is a 4-Element Beam for 10m, 15m und 20m. . It was an awful view after opening the balun. 7 factor and cut the coax longer than the formula indicates for the shield. The Assembly. There are Cushcraft HF Beams installed around the world, providing dependable service and top-notch performance. The 6 element VB-66DX …All information, images, and documents on this website are the sole property of Hygain Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from HygainThe VB-66DX features a concept in beam construction that provides actual delivered performance equalling maximum theoretical gain. Posted on January 28, 2012 by g6nhu. Balun/Math - 1: 1 50 Ohm -teflon. I have had the Cushcraft A4S Tribander with 40M up since 1989 and need to work on the Driven Element. MFJ-893 GIANT X SWR/WATT-METER, 125-525 MHZ, 200W ASSEMBLY AND INSTALLATION INSTRUCTIONS 13B2N Cushcraft offers several different BALUN 11 010011 SS HEX 8-32 8 NUT Cushcraft 40-2CD, XM-240, 50-5S. We have assembled the best team, suppliers and parts manufacturing to provide our clients with HF antennas that will be considered a work of art. Or be careful what you bid for on ebay . eham. The larger the wire, the wider the bandwidth. Cushcraft R7 Vertical Manual Read/Download R7 Vertical Cushcraft antenna 10-40 mtr Excellent condition. This Antenna is a four element, 6 meter Beam optimum spaced for maximum forward gain. . Note that this is not the same as the Comet balun details of The various makers of 43 foot vertical antennas all suggest the use of a 1:4 balun. Feeding and matching is simple; it's fed with a quarter-wavelength of RG-11 or RG-59 (75 Ohm) coax, and then any length of 50 Ohm coax. Our broad band antennas are used in Civil Air Patrol (CAP), Military Affiliate Radio Service (MARS), Military, Public, and Scientific service. 4M), making them easy to install on a very simple mount with only a light rotator. While at North Carolina State University,he conductedan experimen­ tal investigation of pattern distortion without a balun at 1. 95 $151. XM240 Big Thunder Monobander Cushcraft’s XM240 monobander utilizes rugged Big Thunder hardware that combined with high strength aluminum tubing affords the antenna outstanding wind survivability. 94. Product ID, Product Description, Retail Price. Precisely tuned high-power traps, carefully selected element legths, and proper spacing combine to make the A4S the preferred antenna for your HF work! Antennas (Mini), Cushcraft AR-10 Mod, CQ 1990, Jan pg 103 Antennas (Mini), Cushcraft R5 No-Ground Radial Vertical, CQ 1990, Apr pg 38 Antennas, Baluns For Antenna Cushcraft’s XM240 monobander utilizes rugged Big Thunder hardware that combined with high strength aluminum tubing affords the antenna outstanding wind survivability. The JK402T replaces the old Cushcraft XM-240 40-meter Yagi that had been used for visitor operations. West, Toronto Ontario M3N1V7 Tel: 416-667-1000 sales@radioworld. Used 8AWG PVC covered wire inside the 20mm conduit and a coax balun and insulators made from bits of coat hanger. Half-wave coaxial balun connected to the two outer N connectors and 50 ohm feeder to the centre N. I work this antenna on 2008-2010. What is the attraction of vertical antennas for HF? Using a balun with a resonant dipole. Cushcraft R5 ½ λ Vertical 4 balun. Excellent front to back ratio and gain makes the XM240 the right choice for DX and for stacking as well. Cushcraft MA5B is broken – and repaired. The new antenna went up on the tower on October 30. Excellent front to back ratio and gain makes the XM240 the right choice for DX and for stacking as ANTENNAS Antennas (Mini), AEA Yagis and Mobile Antennas, CQ 1990, Feb pg 60 Antennas (Mini), Com-Rad Untennas, CQ 1990, Feb pg 58 Antennas (Mini), Cushcraft AR-10 Mod, CQ 1990, Jan pg 103 Antennas (Mini), Cushcraft R5 No-Ground Radial Vertical, CQ 1990, Apr pg 38 Antennas (Mini), Cushcraft Ten-3 10 Meter Yagi, CQ 1990, Feb pg 38 The Cushcraft R8 is a vertical antenna for all amateur bands from 40m to 6m. 00 Mail In Rebate Until 03/31/19 Balun . meters, dipoles for 30/40/80, and a Cushcraft R7 vertical for 40-10 meters. The 1:1 Current Balun was designed to replace the center insulator of a dipole antenna. Hy-Gain Balun, 3-30 MHz, for Yagi, SO-239 50 Ohm 3-30 MHz Ferrite Balun w/ SO-239 Connector n+á Download the BN-86 Manual Click here for a parts chart for the BN-86. Cushcraft A50-5 5 element yagi's Multiband wire vertical. 95. 95. The fundamental features of a Bazooka Balun are shown in Figure 1. Sure, you can use radials, of course, but they are not required for this performance! Q. All coax cable seems to change drastically from the manufacturers specifications and really needs to be tested and confirmed before making a Pawsey stub. The Log-Periodic Antenna is the most effective and efficient single feedline, multi-band antenna available today The wire for the balun is 1. TEN3 beams feature Cushcraft's proven Reddi-Match matching system for a 50 ohm, no balun feed with a built-in SO-239 connector. A 1:1 balun may be installed at the feedpoint but it The choke balun shouldn't be at all critical. It was fun to repair the traps, and then "homebrew" the rest of the antenna, including the matching box. Follow us on Facebook KENWOOD TMV71A 2m/70cm Mobile $344. Baluns on Log Periodic Antennas . See photos below. =1. The HF Balun is attached vertically to the Stub Mast at the Mosley Mustang Mark3 beam. 95 The A4S is the true high performance tribander. Mast shown is not included. cushcraft balun Discussion in The balun looks quite messy and had a broken wire at the joint to the pc board. Download, Cushcraft, Amateur Antenna, Brochures, Owner Manuals, Service Manuals, in Pdf format. MARTIN - G8JNJ - Broadband HF Vertical - Martin - G8JNJ - ECLECTIC AETHER - Radio Related Ramblings. ca Cushcraft MDS-HAM. I'd be afraid to run a KW on 17 meters into the antenna because of the wire size used to make the coils, but the antenna is in fact resonant on 17 meters. 46 The formula to compute the length is the standard 468/frequency with the 4/1 Balun at 62. 30m Delta Loop antenna Larry on 2nd Apr 2016 If you wish to use the tuner remotely (even with a short length of coax) then the best compromise is to use an external 4:1 balun at the base of the antenna. We also provide the famous MTFT balun. For more ideas and an improved design see my next set of notes describing Wire antennas for the LF bands . MFJ IS NOW THE ONLY AUTHORIZED NORTH AMERICAN SALES AND SERVICE DISTRIBUTOR FOR XIEGU PRODUCTS! MFJ is the exclusive North American Distributor of this new ultra-portable multimode HF transceiver. 5 Multiband vertical no radials (coax as a counterpose) (*Note: "3132 9:1 balun" is probably 9132 9:1 Unun) Linear loading for vertical antenna ("Flagpole antenna") Shortened vertical for 40m (2/4 height) Short helically wound vertical for 20m; Short helically wound vertical for 160m; Short (2m) indoor multiband vertical antenna Half-square OA-50 omniangle antenna. Lower the mast, remove the new balun and fit a dummy load to the end of the coax and check the SWR. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. Von der Art der Antenne, von der Höhe des Einspeisepunktes über dem Erdboden sowie der elektrischen Leitfähigkeit des Bodens hängt es maßgeblich ab, unter welchem Höhenwinkel das Funksignal abgestrahlt wird. Dummy load 50 ohms with RF Termination. If there can be something more, we also offer a 4-element Yagi by Cushcraft for 20,15 and 10m. Excellent front to back ratio and gain makes the XM240 the right 193115, BRACK,BALUN MOUNT BOOMER, #C59, RM:072132, 0. The Cushcraft TEN3 is a light weight and economical yagi antenna for 10 meters. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. Build an All Band HF Air Core 1:1 cushcraft r6000 manual Choke Balun THE “UGLY BALUN” Introduction. I found not only the spider cocoons. Compare Cushcraft R9, no radials to 43 foot vertical with ground A very interesting thing about the Cushcraft Shorty Forty, because of the coil placement, the antenna is actually resonant on 17 meters. Many balun manufacturers either don’t make baluns with enough choking impedance, or are overcharging for a product that can easily be made by the ham (and much more effective!). MFJ-939K 200 Watt Antenna Tuner for Kenwood Cushcraft MA8040V Dual-Band Vertikal Antenna. Those "radials" are in fact a top hat capacitance. Enjoy a cleaner pattern and 18 dBi gain with A17B2 thanks to its advanced manufacturing technology employing precision CAD and accurate test range data. Your Success Is Our Goal. You get the idea. It includes many of the features of the R8, R7 and R5 antennas. Using Yagi Calculator on a Mac. Alex Dipole antennas with 1:1 balun, are the simplest practical antennas from a theoretical point of view; the current amplitude on such an antenna decreases uniformly from maximum at the center to zero at the ends. Homemade Carolina Windom antenna; Homemade 20 metre band loft will take the power, but unless you feed it with a balun, you will have If you isolate the Cushcraft antenna, then put a ***directly underneath it, there is no will take the power, but unless you feed it with a balun, you will have If you isolate the Cushcraft antenna, then put a ***directly underneath it, there is no The balun. Only at eHam. Compare Products . The balun has an unequal number of turns: MFJ does "own" Cushcraft, Cushcraft X7 Yagi. The next generation in Design and manufacturing. Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Cut the leads as short as possible but to a useable length, short them together on one end. Each mechanical component was designed to 100+ MPH wind survival without a boom truss with a 1. ZX-Yagi: supplier of fine shortwave antennas, especially monoband beams, small tribanders like the MINI-2000 or the G4MH beam, and vertical antennas like groundplanes. Cushcraft's product development team has employed the latest computer modeling technology to achieve a superior electrical design as well as elegant new mechanical hardware and assembly techniques. Equivalent Representation of Sleeve Balun. The balun is rather easy to make you need only a few items. Plug in CW filter for a wide range of Icom radios. HF antenna BALUN 1:1 BL-1030C-5K for Yagi and Cushcraft A3S HF antenna 1:1 balun repair. Rated 3 out of 5. Cushcraft R7 vertical Antenna. With Xena Warrior Princess in the background this is the center support structure for the Windom. CUSHCRAFT MA5B APRIL 2008 SV2JAO. HF Antennas. Also what length is the balun and what type of wire do I use. The feed system is a 50 Ohm direct feed and VSWR is flat across the band. Cushcraft XM240 Big Thunder 40 meter Monoband product reviews by real people like you. - BALUN AND FEED LINE e The FIGURE E ot and with g— gin PL-zS9 a Z 50 a PI—259 The FIGURE F . This is my first mini beam from Cushcraft MA5B. coiled into a choke balun work? Maybe 6 or 10 turns at about 5 or 6 inches? Randy You could give it a try and see how it works for you, definitely simple to do. 617-6B - BOOM TO MAST ASSEMBLY G DIAGONAL BRACE ASSEMBLY to s a Cushcraft MDS-HAM. I think they suggested 8 turns on my Cushcraft tribander, which should be sufficient. If the feedpoint balun is a voltage balun, either use method 1 or change to a current balun. Broadband 50 Ohm The Cushcraft part number for the balun is MN2010; aside from calling it a "matching network", there isn't any information about it in the manual. That is contrary to the print design. RE: Specs on Van Gordon 1:1 Balun: Reply: by KB0GU on July 17, 2003 Mail this to a friend! I am still looking for someone who has the specs on the Van Gordon 1:1 balun. CUSHCRAFT ANTENNAS. More information about baluns can be found here . 9. Increase your range by selecting one of the new Cushcraft dual band Yagis on 2 meters and 70 cm. The balun in a Guanella current balun and is as a 1:4 impedance transformer as an rf choke. Y1-5K 1:1 "Yagi Balun. Martin G8JNJ 12/08/2008 V2. The other is the 50 Ohms un-balanced to 50 ohms balanced configuration. Cushcraft XM-240 monobander utilizes rugged Big Thunder hardware that combined with high strength aluminum tubing affords the antenna outstanding wind survivability. The Wire Size can range from 16 AWG to 12 AWG. I suspected the balun, or matching network as Cushcraft call it to be causing the fault but as I had plans for Sunday afternoon I couldn’t easily do anything to check until today. se trata de un dipolo de dos bandas, 17 y 12m se estira solo 19 pies. ANTENNA CUSHCRAFT IN GOMMA CARICATA PER 164/174 MHZ ATTACCO TNC REF 590107. 89: Jetstream JT270MH 25 Watt 2m/70cm Mobile Follow us on Facebook KENWOOD TS480SAT Compact HF Mobile $929 Until 03/31/19: YAESU FT60R 2M/70CM HT $153. The donation included a new balun, donated via W3JK by Balun Designs LLC . Site Menu The 1:1 Current Balun was designed to replace the center insulator of a dipole antenna. That was until we realised that the previous owner had numbered the elements in the opposite order to the Cushcraft manual! Boom assembled. com in 1 categories. Ugly balun added 28/11/09. Also ants must have nested. Designed to match virtually any transmitter to almost any antenna. Henk "Modification of the Cushcraft 416TB (2x8 elements) 70cm antenna" (add switchable circular polarization) Introduction Cushcraft provided with the 416TB antenna a polarization 'phasing harnesss' that allows either fixed LHCP or RHCP. Ugly balun w/CD rom box; 50 MHz First Steps; SM5DQC Osten; 9Q CLARIFICATION; CUSHCRAFT R7000 Prob/Repair. BALUN 16:1 Impedance matching transformer BALUN/UNUN CUSHCRAFT BOOMER A13B2 144-148 MHz 2 meter, 13 Element Yagi/beam Wideband 5. 144/444 base antennas; 75 ohm coax cables This 4:1 Balun is a quality product and will work well with wire antennas over the 3. These links should help even a newcomer feel comfortable about selecting and installing a HF antenna. 6 GHz in an RFanechoic chamber (which simulates 'tree space") Briefly, his results showed that with a balun (a "Ugly Balun" installed on the A3S 3 Element Beam at the KO4MAX QTH! He read the Cushcraft A3S/40m manual which states 8 turns at 6 inches in diameter. 95 each. Jerry Sevick and are hand wound with best available components to provide highest possible efficiency. Yep, no radials needed!. Bazooka or Sleeve Balun. needs an effective Choke Balun to keep RF from the exterior of your feedline. My old Cushcraft A3S was in a world It features an 8 ft. 20 / 15 / 10 MeterBeam. The 6 element VB-66DX …Keep peace with your neighbors by suppressing harmonics at the source with Vectronics LP-2500 Low Pass Filter. Fencetenna . Can anyone help me for putting together two baluns for the TB-416. It is 17 bifilar turns on a half inch ferrite rod. Myths, Facts and Fiction. Categories. Last months my 3 el HF antenna increase SWR unexpected . Built-In Balun. 23. No refunds on custom orders. The JK401 is a simple Hi-Q coil loaded rotatable dipole, with a small footprint as well giving great performance on 40M. 18, 2017 Shortly after I had repaired my Cushcraft A4 tribander beam the last time, I noticed that it appeared to have a loose connection somewhere. 5 Feet Tall 1500 Watts SO239 Cushcraft achieved a major breakthrough in the development of an HF About Chushcraft A3S - Simple Balun Support The resource is currently listed in dxzone. * Cushcraft R5 Manual * Cushcraft TRAM 1481 DUAL BAND BASE ANTENNA 2 Meter - 440 8. Although the popular G5RV antenna is often promoted as an antenna that works well on all bands A "ugly" balun made from coax wound on an air core is not The G0KSC Antenna Balun One issue with the pawsey stub is the calculation of velocity factor. Hy-Gain VB-64DX 50-54 MHz 6-Meter 4 Elements Beam Antenna. The optional formed plastic piece shown is the DXE-UWA-Kit Center-T which provides the hardware required for a no-solder mounting for the antenna elements and the balun and removes the load of the balun and feedline from the element wire ends. OPTIONAL 1:1 External Balun: 5KW Choke balun in waterproof housing with SO239 connectors. Customer Account · Order Lookup · Customer Support BROADBAND 50 OHM FERRITE BALUN WITH SO-239 CONNECT In a simple dipole, the balun (choke), assures that the dipole, and not the . So the Save cushcraft a3s to get e-mail alerts and Cushcraft A-744 30m/40m Add-On Kit for A4S Antennas See more like this. Let's compare our 20 and 28' versions with the Hy-gain AV-680 and Cushcraft R9: The Red inner rings are 80M, blue 40M, green 20M, and orange 10M. Radio Communication, Antennas, Balun Transformer, Towers, Rotators, RF-Generators, Power Amplifier, Auto-Tune Couplers Creative Design Corp. Beginning with some of the earliest computer modeled and Computer Numerically Controlled (CNC) manufactured antennas, Mike Staal, K6MYC has applied his experience to design and build the finest directional linear, cross-polarized and circular Yagis available. Loading Unsubscribe from SV2JAO Guanella balun andthe basic building block: (8) The Ruthroffbalun as originally drawn. com. Cushcraft MDS-HAM. Here now the reworked original cushcraft balun. The Cushcraft MA6VA provides amazing coverage, great versatility and incredible performance with an addition of 6 meters. inside and they brought a lot of sand and mud into the balun. Figure 2. The feed system is a 50 ohm direct feed VSWR is flat across the band. diego andrade: hi : is the balun that cones with this antena a 1:1 or 4:1thanks Dan Grisham: Mel, Just looking around at others with this antenna. An Improved Multiband Trap Dipole Antenna You need this—traps with lower loss, higher Q, increased power-handling capability and a 1:1 balun, a pair of EI7BA's Amateur Radio Pages . ***** BALUN CHECKING PROCEDURE ***** To make or check a 4:1 balun when the velocity may be unknown use a. On the auto transformer are 5 black turns and 6 white turns through the toroid. I will begin collecting the needed stuff in the coming days and keep you informed of the project's developments. $95. Posted by N6PET In comparison to my vertical Cushcraft AR-6 Ringo and the 53′ Endfed, the Taktenna surprisingly performed a lot better The ATR-20 is the little brother of the Ameritron ATR-30 True Legal Limit antenna tuner! Its Ameritron Tough -- handles a full 1. Very pleased. Cushcraft R8 matching network. After much debate we went with your design. I removed it soon after, replaceing it with Since 1986, M2 Antenna Systems has been building high-quality antennas, positioners, and accessories for radio amateurs. This allows the balun to be isolated from the boom, thus reducing the effect of introduction of reaction with the balun core. 13b2 wa this antenna is an electrical conductor contact in or co not ns tall is any possibility of ccatact with voltage arc-over power cablesor onaps to antenna. Cushcraft 2M Broadband Boomer Beam Antennas will be your choice for high performance across the entire 2 meter band. Excellent front to back ratio and gain makes the XM240 the right BALUN. A passing cold front, which sparked thunderstorms, and swirling high winds, gave the tower and antennas a real test. Heavy duty hardware and 2. Contents of this site are copyright 2002-2018 by ZeroFive-Antennas All canceled orders are subject to a 20% restocking fee. Cushcraft X9 Baluns. 200 watt PEP Versa Tuner from MFJ. View and Download CUSHCRAFT A3S assembly and installation instructions manual online. It’s just two steps! W0CG – Wire vee fed through WX0B balun at center – Cushcraft 40 -2CD with W6QHS mechanical Tag Archives: ugly balun 1:1 Baluns. 2 kW SSB and 600 Watts CW Radiowavz Multi-band and broad band antennas are made to meet the dynamic needs of instantaneous or near simultaneous, communications on multiple frequencies. It provides 15. HamCity has more than 30 years of experience in the amateur radio equipment business! Please visit us today for all your ham radio needs! Easy Guide to PJ2T Antenna Switching. Ferrite is a ceramic consisting of iron and metal oxides having high permeability. tambien se están preparando directivas de 3 elementos basadas en este tipo de dipolo. Les baluns sur tores en ferrite. Yan, M0YNK and myself lowered the mast and checked inside the matching network Cushcraft Compact HF Multi-Band Beam 10-20 Meters The MA5B, Compact HF Multi-Band Beam Small Footprint -- Big Signal MA5B, Cushcraft’s multiband HF antenna provides 5-Band operation in a package small enough to mount to a tripod. Ants nesting in R7000 balun box: After operating for a while I noticed that I my swr was deteriorating again. Balun on tower Dimensions of trap dipole It is fairly noisy in town, picking up all of the plasma TVs (mine included), but has much stronger signals than my Cushcraft A4 mounted ten feet above it. The small tribander suffered a little twisting of elements and alignment on the boom, but the casualty was a Cushcraft 719B, provided by Dave, N3DT, which suffered a snapped boom. As a general rule, they are not practical at HF. 0mm from a new one metre piece of twin-and-earth (old style red and black). Mounting bracket/insulator and balun assembled to radiator: Ultimately it will be on the roof mast below the Cushcraft AR-270B 2M 1:1 Balun 0-30 Mhz, 1500 watts. Find helpful customer reviews and review ratings for CUSHCRAFT AR-6 - 50-54 MHz 6 Meter Vertical Base Antenna, RINGO at Amazon. I used the suggested 8 turn 6 inch RG-213 choke balun. 95 $20. at the log feedpoint. 2% from one end. Como podem verificar existe um Balun Coaxial Balun by I0QM Rev. also see common mode isolation Sleeve baluns are normally used at VHF and higher. View and Download CUSHCRAFT A4S assembly and installation instructions manual online. All information, images, and documents on this website are the sole property of Hygain Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from HygainThe VB-66DX features a concept in beam construction that provides actual delivered performance equalling maximum theoretical gain. £55 carriage paid. The CAROLINA Our dipole antennas are world renewed for their performance, ease of use and set-up, and cost to performance ratio. The balun is either a current type to prevent feed line radiation, or a voltage type to match impedance. Es úmica en muchas cosas. 10, 12, 15, 17, 20, 30, 40 meters (8 pages) Repairing and Optimizing the CushCraft R-7000. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. The RADIO WORKS™ or CAROLINA WINDOM® are not generic names. 00. HF antenna Line Isolator 1-30 MHz/ Rated @3kW / BALUN / RF choke CMC-130S-3K. BN-4000B, BEAM BALUN, 1-54 MHZ, 4KW, SO-239, $109. 3 & 11. CUSHCRAFT R5 (10/12/15/17/20 m) Cushcraft have made many vertical antennas; R4, R5, R6, R6000, R7, R7000, R8 etc. Coaxial balun is employed to keep RF off from the exterior of MA5B Cushcraft's newest multiband HF antenna provides 5 band operation in a package small NVIS Antenna Information Near Vertical Incident Skywave (NVIS) Antenna - W0IPL Commercial Windom/OCF Antennas Alpha Delta Balun Designs Cushcraft DX Engineering You have no items in your shopping cart. The antenna should work fine without it. is the only and exclusive company who designs and manufactures a various type of telecommunication and industrialize equipments such as antennas, antenna rotators, tower and their related equipments, and A. On any antenna, a choke type should be used, even with a voltage type balun. The Diamond D-130 antenna is the first ultra wide-band antenna on the market which can cover amateur radio, air traffic control and other various utility frequency bands. Excellent front to back ratio and gain makes the XM240 the right choice for DX and for stacking as Cushcraft R7000 Vertical Antenna The Cushcraft R7000 is a multiband vertical antenna rated at 1500 watts peak power, 1000 watts continuous, on the 7 through 28 MHz amateur radio bands. A 1:1 balun may be installed at the feedpoint but it The Cushcraft part number for the balun is MN2010; aside from calling it a "matching network", there isn't any information about it in the manual. No doubt about it, without a good antenna, no matter how good the receiver, you will not hear much of anything. I have the ATB-34 Cushcraft 4 element beam which is exactly the same except they changed the stock number and added another 10 meter reflector to it. Find a typical picture of a 'Cushcraft' "A-3" beam's feed point, it's a direct feed (or was). Kit to add two elements on six meters to any of the following antennas:6BA-JKXR5-JKJK-Navassa-5The t. Boom with the elements and balun attached. Just because Cushcraft uses the 1/4 wave coax & radials doesn't make that the 'only' solution. They represent a long history of innovation and manufacturing quality that radio professionals and Amateurs have counted on for decades. Features: Robust mounting hardware; Low-loss balun; Air-baggage transportable (longest tube is 54 in. The last year or two, I have not been The wire for the balun is 1. Without the choke balun, rf reflections can radiate back toward the transmitter, along the outer coax conductor (skin effect). 0 Truthfully most of our 6M antennas are designed for the performance driven user. I bought it at the radio store near me because it was reported that it was the one for my beam. So, I showed him your Ugly Balun page and then the Hy Gain manual I have, which calls for 12 turns 6 inches in diameter. 148 Pages of MFJ, Ameritron, Hygain, Cushcraft, Mirage and Vectronics Products! REQUEST PRINT CATALOG! VC-300DLP has 4:1 balun for balanced line antennas. The feed system was then BATIMA Electronic, une expérience à votre service. The easiest solution here is to slip ferrite beads of high permeability over the coax and secure with heat-shrink tubing. and documents on this website are the sole property of MFJ On November 6, 2009 the Norwegian authorities opened the band 5260 kHz – 5405 kHz for general amateur radio use. Legal Limit This brings the 112 ohms back down to 50 ohms. Customer Account BALUN, 1:1, 1. [TowerTalk] Cushcraft Parts from MFJ > > Needed parts to re-build an R7, Cushcraft MDS-HAM. Home Cushcraft R5/R7 Maintenance and Repair The Woodpecker Tuning Aid Crank-up Tilt-over Cushcraft TEN3 (TEN-3 TEN 3) Saturday, April 23 2005 @ 20:30 The Cushcraft TEN3 is a light weight and economical yagi antenna for 10 meters. Enlarge . Lorsque la radio est une passion… BATIMA ELECTRONIC, fort de plus de 40 ans d’expérience dans le domaine de la fourniture d’équipements et d’accessoires destinés aux échanges radio, propose tous les équipements nécessaires à la satisfaction des amateurs les plus exigeants. The matching system is the proven Cushcraft Reddi-Match for 50 ohm, no balun feed and SO239 connector. Once the two end masts were in place, we moved inside to construct the doublet antenna. ) Neighbour-friendly, very low MY BIG VERTICAL ANTENNA PROJECT some cases, I would bypass the big DXE RF Transformer/balun installed at the base of the big vertical. Delta Loop Full-Wave. Commercial examples of this are Gap, MFJ, HyGain, and Cushcraft "no BALUN. BN-4000D, DIPOLE BALUN, 1-54 MHZ, Cushcraft · MDS-HAM. Cushcraft Compact HF Multi-Band Beam 10-20 Meters The MA5B, Compact HF Multi-Band Beam Small Footprint -- Big Signal MA5B, Cushcraft’s multiband HF antenna provides 5-Band operation in a package small enough to mount to a tripod. HF 18AVT Vertical fence mounted with an Ugly-Balun Ugly-Balun , & extra band be using this same UB design on my Cushcraft A3 & A4 beams soon!!! Ugly-Balun Here is the 4:1 balun. The balun looks quite messy and had a broken wire at the joint to the pc board. 2x Socket - "N". Balun Designs Established in 2005, Balun Designs builds exceptional quality baluns and ununs for Amateur Radio, military and commercial applications. KT31WARC - La KT31WARC ofrece gran flexibilidad en tamaño y frecuencias . and R7 antenna's and I think this View and Download CUSHCRAFT A3S assembly and installation instructions manual online. Some suggest using a balun model made specifically for “tuner use” with the idea these specialized units have the robustness needed to handle the less that ideal voltages and currents. A 10-element Yagi Antenna for Six. I ***** BALUN CHECKING PROCEDURE ***** To make or check a 4:1 balun when the velocity may be unknown use a. Considered the price, the rig offers a range of versatile features – a range of features not found in many other rigs. The Cushcraft R9 uses both. MFJ-939I 200 Watt Automatic Antenna Tuner for ICOM. This coil acts as an RF choke and prevents the common mode currents returning back down the feed line. This balun adds a short-circuited sleeve around the coaxial cable, which somewhat resembles a bazooka, giving it the name. The balun can be inverted and used as a skirt to form part of the antenna element. Power = 5KW Avg or Balun restricted Cushcraft MA6V Stealth Antenna — at least from my backyard… MA6V in the clear, up 20 feet HF2V in the side yard, 30 through 80 meters MA6V Construction MA6V from the back of my yard Balun constructed with LMR240 coax Butternut HF2V with the 80 and 40 meter coils HF2V 75 ohm matching line for 30 meters HF2V all three coils, 30m, 40m, and 80m Sleeve Baluns . Cushcraft achieved a major breakthrough in the development of an HF A high power 1:1 balun is included. Compare I e-mailed cushcraft and they no longer support this old Sat antenna. Manuals for Cushcraft This is the manuals page for Cushcraft. All but one thing passed the test pretty well. net. The antennas had been up for a few years with out any issues. Near the foot of the R8 is a matching network. I have a 402CD 40 meter beam that had a coil balun of 12 turns of 6 inches in diameter and the coil got messed up taking it down. The next stage was to attach the elements and the balun to the boom. Any reuse or Repairing and Optimizing the CushCraft R-7000. 25 safety factor. The Cushcraft R7 Vertical: 40m –10m With a balun transformer at the 1/3 point, Antennae of Field Day Author: JK 6 m Add-on kit - Adds two elements on six meters to JK-Navassa-5, XR5-JK and 6BA-JK antennas. This is a basic balun for a wire antenna, and it The antenna is supplied with halyard/throwing rope, stainless steel “S” hooks, Balun/junction box fitted with chromium plated brass terminal, winding spools, throwing weight, carry bag and 10 meters long low loss feeder cable fitted with connectors. Mast-mounting fi to 50 mm in the middle or at the end of the boom. Ham Radio and Amateur Radio online equipment sales. Como opción tiene la posibilidad de añadirle 20 y 30m. along with an upgraded balun Every amateur radio working on HF knows this aerial : hang a very long wire over 1l long as high as possible (from 6 to 30m high), attach the far-end to an insulator screwed to a pole or around a tree (you can use a bowline knot), and connect the other side to an impedance transformer (balun) linked Cushcraft R5, R7 Repair - Traps, Matching Unit Baluns - W8JI Antenna Articles Toroid Balun Winding * Balun and Transformer Core Selection * Transmitting Baluns It features an 8 ft. * Cushcraft R5 Manual * Cushcraft CUSHCRAFT R8 7 - 50 MHz 40 - 6 Meter Vertical Antenna 28. Place a 1:1 Balun on the Antenna end of the Feedline. 20-124WB-ET, MATCH 26 Sep 2014 Cushcraft MN-X79 4:1 Balun. Picture 1. I use a View and Download CUSHCRAFT A4S assembly and installation instructions manual online. but it incorporated a really crappy 1:1 Yagi Calculator by John Drew Balun construction by Colin VK5DK. Monday, enter the Ugly Balun. Cushcraft XM240 Big Thunder 40 meter Monoband product reviews by real people I did put the DX engineering 1:1 5kw balun on it instead of the standard 1:1 A 4:1 balun has four times the balanced impedance as unbalanced impedance. 392m Hf Modifying a 27MHz CB Ringo Antenna for 80–6Mtrs It looks like crap but it works a treat . This will direct more of your output power when transmitting at the same time reducing interference and increasing signal strength when receiving. Paul was very surprised with the results. The elements are reasonably small, but not so form the balun - cushcraft 10-3cd antenna 3el10 - cushcraft 10-4cd antenna 4el10 - cushcraft 15-3cd antenna 3el15 - hy-gain bn-4000b balun x beam - hy-gain bn-4000d balun xdipoli direct feed element. (4) And for all of the Yagi's Parasitic Elements to be the right electrical lengths, and be in the The Balun used is the W2AU 4:1. The first balun 50 Ohms to 200 ohms are often used to feed Of Centre Fed dipoles and G5RV and antennas while the second balun 50 ohms to 50 ohms simply provides a match and keeps RF off the feedline. 99 2kw Ofc 160-6 Hf Windom Antenna W 41 Balun Off Center Fed 14awg Wire 100’ Rope. Small and Affordable Tuner from MFJ. The Balun. The basic design comes very close to the design at hamuniverse. BALUN, FILTERS LONGWIRE BALUN 1:4 BALUN HF50Mc TUNER/BANDPASS ON6MU Homebrew Page baycom modem schematic sstv modem schematic and electronical design of 144MHz 2m Portable Yagi VHF Beam Antenna Version 4 of the portable beam, the ‘PegTenna’! Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom , a few people have contacted me asking for some information on how it was constructed. Cushcraft MA5B is broken – and repaired Posted on January 28, 2012 by g6nhu Last weekend was the Hungarian DX contest and I decided a few days prior that I was going to enter it. CUSHCRAFT A4S Assembly And Installation Instructions Manual. It's only there to reduce feedline radiation. 9/14/2011 · Cushcraft R8 matching network. All information, images, and documents on this website are the sole property of Vectronics Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from VectronicsANTENNE CB DA BASE, apparati per telecomunicazioni radioamatori cb nautica laboratorio per riparazioni gps garminI have enjoyed the Yaesu FT-2000 HF/50 MHz rig for 16 months now. On the other end connect the leads together to form a small loop. I think it is RG-59U like the phasing harness ( I have it extra as the PS-4 switcher replaces) but not sure. That was until we realised that the previous owner had numbered the elements in the opposite order to the Cushcraft manual! Boom assembled The next stage was to attach the elements and the balun to the boom. A 1:1 balun may be installed at the The Cushcraft R5 and R7 verticals are favourites of mine, ever since Alex EI6AG, my friend and "Elmer" for many years, gave me a present of a set of faulty R7 traps. First thing to check is the coax to the top of the mast itself. The quality of the R6 successors decreased, see Product Reviews on www. Customer Account Order Lookup Customer Support BROADBAND 50 OHM FERRITE BALUN WITH SO-239 CONNECT: $79. How to build Ugly Baluns, Air Wound or Ferrite Chokes? How heavy is a Cushcraft A3S TriBander Yagi? 40 meter shortened hexbeam above the 20 meter Hexbeam 3. a half-wavedipole. Most of our units are derived from the researched and tested designs of Dr. A replacement balun for my Cushcraft MA-5B from Balun Designs Posted on February 8, 2012 by g6nhu After the investigative work a couple of weeks ago where I tracked the fault on my Cushcraft MA-5B to the cable between the balun (matching network) and the 12m/17m element I decided that I wanted to replace the entire balun, including the two coax Need an opinion/suggestion. Rohn tower about 40-50 feet with 3 element (with balun) A3S Cushcraft 10-15-20 Meter beam, 13 elements 13B2 Cushcraft 2 meter broadband boomer (with balun), Hazer elevator system, mast, all new guy wires, rotor (and additional rebuild rotor) with control box, including antenna assembly manuals. 75 Cushcraft 2kw Ofc - $104. 95: TH-3MK4 HF BEAM, TRIBAND Cushcraft’s XM240 monobander utilizes rugged Big Thunder hardware that combined with high strength aluminum tubing affords the antenna outstanding wind survivability. All antenna wires are all attached to one side of the balun and attached to the center pin of the coax cable. il balun balanced - unbalanced, IW2MXE. You will find reading the specs, that most don’t show 51 to 54 mhz as part fo the “usuable frequency range”. Figure 1. HamCity has more than 30 years of experience in the amateur radio equipment business! Please visit us today for all your ham radio needs! Cushcraft R-9 - $714