W7iuv preamp kit


kit BUFFER preamplificato re 6N3 valvolare a valvole STEREO hifi pre tube preamp. HF amplifiers for ham radio use. Bonjour à tous Je suis à la recherche dune source dapprovisionnement pour des condensateurs HF (mica argenté), bien entendu en petites quantités par valeur, si possible via une filière nexigeant pas de minimum de facturation, et bien entendu à des prix défiant toute concurrence. Useful links. There is my next blog post. Distance variation adds additional losses. It has an open-loop gain of 67. Welcome back An The New 630m Amateur Band Rudy Severns N6LF, WD2XSH/20 [email protected], www. The 85 foot receive loop works very well from the bottom of the broadcast band through 40 meters. 9,00 Rtl-SDR R820T/DXpatrol w. SHORTWAVE RADIO ANTENNA Preamp Kit W7IUV DIY Low Noise RF Amplifer with PCB, HAM - $39. Books by Language St. You are bidding on a kit to build a low noise antenna preamplifer, as designed by W7IUV, for 1-30 MHz radio reception. home + antenne ehf-shf-wifi + antenne vhf-uhf + antenne satelliti + antenne pmr-lpd + antenne per i 6m 50mhz + antenne per i 4m 70mhz + antenne cb 11m Cela porte le niveau de bruit moyen à environ S4 avec le PREAMP du TS-590s coupé mais sans l’atténuateur. lowdown journal. com Antenna poles at N6LF * Base tuning box Shortwave Radio Antenna Preamp Kit W7iuv Diy Low Noise Rf Am $ 2,929. After many years on the air using experimental licenses and intense politicking, at the 2012 World Radio Conference (WRC) amateurs were allocated a new MF band: 472-479 kHz. You also need only I have read the NCJ article and was on the list for the original kit version until it got squashed. N4IS is developing a 40 db preamp with very low noise. W7IUV (rotatable flag) and other well-known authors. W7IUV Amplifier Card. However a single preamp is not enough for weak signals. Rtl-SDR R820T/DXpatrol w. Plaque Winner. W7IUV_LowBand_Preamp_1-2 QSO LABS LowBand PreamplifierVersion 1. This is the same circuit as our prior RF Preamplifier Kit (RF-Preamp), but now comes with a circuit board. E-FIELD PROBE ANTENNA. Comparing some amplifiers - red line is a straight wire, green is the Ramsey SA-7 preamp kit, advertised as 20db gain but we may have an issue with Z-matching to the RG-174 cables - and the blue is a nice W7IUV single transistor amp doing it's expected ~18-20db gain. componenti per preamplificatore di W7IUV più precisamente si tratta di: 1 transistor 2N5109 1 dissipatore per detto 1 toroide Steward 35T0375-10H (più piccolo di quello in foto; è quello che di solito usa W7IUV) resistenze a film metallico e condensatori ceramici ed al tantalio vedi gli altri miei annunci 73, Crispino i5xww 132874908526 This preamp circuit results in maximum performance from your Beverage antenna for very little additional effort. org Wed Aug 2 11:42:48 2017 Return-Path: X-Spam-Checker-Version: SpamAssassin 3. Mary's County Library (MD) - Open Libraries Minnesota Prevention Resource Center - Open Libraries SALIS Collection: Alcohol, Tobacco, and Other Drugs - Open Libraries Saga Press - Open Libraries Georgetown University Law Library - Open Libraries Little Bird Books - Open Libraries He got active in short wave in 1962 when he built a Kinght Kit, soon moving to a Hallicrafters S120. $4. a universal if amplifier by joe carr. Plan W3NQN RX filters to go on the K9AY ahead of the preamp. 2 Meter GaAs FET Preamp: 2 meter antenna preamp, DL5DBM: 50 MHz preamp Gain 26dB with the BFG135: 23 cm GaAs FET preamplifier: 28-30 MHz Homebrew Antenna pre-amplifier, SV1BSX: Preamp using ATF54143, PA3CSG-160 Meter preamplifier, KD9SV: A preamplifier for HF with 2N5109, W7IUV: A 21-30 MHz low noise amplifier, OZ2OE: A High-End UHF Preamp for This preamp circuit results in maximum performance from your Beverage antenna for very little additional effort. Ce document est exceptionnel pas seulement parce que le circuit présenté est très bon, mais surtout parce que l’auteur explique pas à pas les choix qui l’ont amené vers le circuit final. I forgot to factor out the insertion loss. A pcb is designed for this. Broadband RF Preamplifier Active Antenna Booster. The previous rotatable Flag ( with only the KD9SV preamp) was ALWAYS BETTER than any Pennant (with the KD9SV + the K9AY PRE-1 preamp. Nuevo León $ 149 99. I use Motorola 2N5109 transistors and classic W7IUV design. . Thanks, Hannes! Without knowing the exact performance data, I ran a few measurements with my Network Analyzer on the amplifier to determine the Gain and it’s operational fitness. org > Discussioni / Areas of discussion > Autocostruzione: Preamplificatore W7IUV non spendere soldi inutili per il preamplificatore, quello di W7IUV è dedicato ai 160 metri, è ottimo, facilmente costruibile anche sulla millefori e costa una bazzecola. Il mercato più grande del mondo. is a curation of 123 resources about , Adding 160M to HF amplifiers, 40m linear amlifier made by 9A6A, 3 x 4-400A project, Restoring an Harris RF-103, Alpha Amplifier Upgrades. Also is anyone using the W7IUV preamp with an array of verticals? If so did you build it on a pc board or on perfboard? Comparing some amplifiers - red line is a straight wire, green is the Ramsey SA-7 preamp kit, advertised as 20db gain but we may have an issue with Z-matching to the RG-174 cables - and the blue is a nice W7IUV single transistor amp doing it's expected ~18-20db gain. hamradioweb. Regulamin na stronie. I probably built these sometime before 1995. Pro zlepšení citlivosti našeho skimmer serveru bylo potřeba sestavit sadu předzesilovačů. The New 630m Amateur Band. The 160m skimmer is an original SoftRock 40(donated by N4GU) that was retrofit with a crystal and band pass filter designed for 160m. The version of this Kit, is the one published by the famous enthusiast of the QRP and armed Casero Doug Demaw W1FB (sk), also includes 700hz of Offset in transmission preamps will work. . The RADIO ANTENNA KIT 2:1 remote antenna switch DIY cheap SO-239 KIT . Revision 6 My search for a low band preamp started many years ago. com Lot’s of MF/LF stuff here. The bandpass filter for the amateur bands are switched with small in line relais. zip FuelFlowMeterV1. Laptop PC. The final antenna I’ll discuss is the so-called E-Field probe. First up was the W7IUV from http://w7iuv. Despite its apparent simplicity and low price it is capable of transmitting in a variety of modes, such as WSPR, CW, Hellschrieber to name but a few on any amateur band from 2200 meters through the U. This one is designed to amplify the 20KHz to >30 MHz range, uses the premium J310 FET and 2N5109 CATV bipolar transistors, giving a good combination of low thermal noise, gain and IMD resistance. 559 MHz Magnetic Loop 1,60 m Diameter 2 EME involves transmitting a signal towards the moon and receiving the reflected wave. 559 MHz Magnetic Loop 1,60 m Diameter Je répare donc cet oubli en partageant avec vous cet excellent document de W7IUV qui présente son design de préampli pour les bandes 160-80-40 mètres. The W7IUV Preamp. I've modified the one on the right since these photos were taken. Top Band Loop Antenna Kit for HAM RADIO 160, 80, 40, 30 meters and SWL . But for practical use (that means giving up our emotional attachments to tubes when ncessary), a solid-state broadband preamp like W7IUV's can't be beat. nuts and volts feb99. net , www. Special tiltover hinged base for ea COMPONENTI PER PREAMPLIFICATORE di W7IUV - EUR 9,00. Rudy Severns N6LF, WD2XSH/20 n6lf@arrl. Preamplificatore W7IUV Autocostruzione. 23-10-2006 15:56 . A W1VD preamp, based on the original design by W7IUV, utilizes a 2n5109 and offers very little noise insertion. I have the amp and have constructed several others of the same kind, usually on pc board. 6dB des Verstärkers recht bescheiden. 136/475kHz ATU (G0FTD) A bias-T powered receive antenna preamp (WB4JWM) A simple bandpass filter for 475 kHz (VK1SV) (W7IUV) 472 kHz transmitter (M1GEO) 472 kHz transverter (G3XBM) 475 kHz 7 pole elliptical low pass filter (VK5FQ)Complicating Factors. KL7RA. Both of us with grey hair and lot of “ham wisdom” but nearly teenagers in mind…. In 2000, we started to put up (at a flat, country location) a short vertical antenna by Butternut, the HF2V It has the 160-meter coil kit, is top-loaded with four wires (each about 5 meters long) and has six ground radials about 40 meters long for 160, 80 and 40 meters. 18x $ 8 33 sin interés . Provides useful gain to 50Mhz. 917 and schematics pertaining to this subject. Ionospheric absorption can add more lossRX ANT Switching b ox, part 2 - Preamp IP3 There is my next blog post. If you want a good HF amplifier, you could do a lot worse than using the W8DIZ unit, available as a kit, using a 2N5109. They work well for HF and fit well with an home-brew attenuator. Have enough parts to build two, but might go with the simpler W7IUV design for the other instead. the 160-meter coil kit, is top-loaded with four wires (each about 5 meters long) and has six ground radials about 40 meters long for 160, 80 and 40 meters. popular electronics apr95 Mini-Kits produce a number of low noise Receive Pre-amplifier Kits for Ham Radio applications that are suitable for improving the reception of weak signals. net/w7iuv/flag. https://oshpark. In winter 2001/2002, we started to test some receive-only antennas, with better signal-to-noise ratios and some directivity, in comparison to the 360° ra-diation pattern of a vertical antenna. Low Band Preamp Assembled. Shop with confidence. Bei 120mA (!) Stromverbrauch wirkt der IIP3 von 21dBm und die NF von ca. I also had a fifth Chinese 2N5109 which came in a "W7IUV Preamp" kit. receiver varactor controlled preamp by cornell. Trova le offerte migliori per PCB PREAMPLIFICATORE HDP01 TRANSISTOR su eBay. It appears that Larry has changed the value of R5 (in his schematic) from 75 to 10 ohms. If 2 preamps are necessary it works well with one being close to the WF feedpoint and the other in the shack. - Power feed unit for connecting power supply via coax cable. This kit is based on the classic design of W7IUV, according to these Published Plans (Courtesy of W7IUV). The RX probe looks into a 50 ohm dummy load during TX. Top Score, Single-Op, North America. I only bought these four Chinese ones in order to test them to see if they are representative of Chinese 2N5109s and they definitely appear to be very similar. com WD2XSH/6 (W5THT) antenna * ATU box * Inside the ATU * Tuning the ATU * WD2XSH/20 antenna * Latest antenna at N6LF * 95’ high, 240’ across, 128 150’ radials on the ground There’s a very extensive discussion of MF antennas at: www. Un ou deux points S de moins serait peut-être plus juste. It is focused to the IP and gain measurements of the single and double preamplifier. Description. 19 re stereo KIT BUFFER 6N3 valvolare a preamplificato re di W7IUV. Schematic follows: BACK TO RF 20db gain 30MHz bandwidth preamplifier. Shortwave Radio Antenna Preamp Kit W7iuv Diy Low Noise Rf Am . NO3M. I am using the built-in 100 kHz calibrator as a signal. Push Pull of 2N5109. This page is a centralized bookmark list of documentation of home brew radio related projects from around the W4KAZ shack. Linear Amplifiers for Amateur Radio,Power Amplifier for 144 MHz,KW amateur amplifiers,gs23b,gu74b,gu78b,4cx2500,4cx800,The new Eimac 8877,Highpower Useful links: Information about the 472 kHz amateur radio band So this is the BPF design, than there is ATT, which you can switch ON and OFF and independant switching for preamp. VHF/UHF station: Wired in Jones plug(s) for the rotator. $5. This preamp circuit results in maximum performance from your Beverage antenna for very little additional effort. 6dB des Verstärkers recht bescheiden. 0 (2014-02-07) on lipkowski. W. On the right a 20dB preamp is build around a 2N3866 following the design of W7IUV. After 11 years my friend Andrian (G0HAS) comes back to the island for holidays. antennasbyn6lf. As of 2015-04-02 this information is mostly obsolete and in need of revision,w4kaz 160m SoftRock Skimmer. • Cons – Insensitive, may require a preamp – Directivity not as good as a Beverage – Feedline prone to noise pickup Although not as good as Beverage antennas, Elongated Loops offer good performance for people who don’t have much room. 2~ foot tower i. Für diesem Preamp eignet sich der 2N3053 natürlich nicht. $25 Special club discounts * EME involves transmitting a signal towards the moon and receiving the reflected wave. w7iuv. Add this W7IUV preamp and one can realize results unexpected at these frequencies, especially given the inherent noise reduction capability and back end null. 12x $ 289 36. In this case, preamp is done by splitting two W7IUW ones. Für diesem Preamp eignet sich der 2N3053 natürlich nicht. Via, non è niente di eccezionale, la perlina di ferrite serve solo a prevenire auto oscillazioni ma non e' critica. The second photo shows my method if installing the isolation relay and preamp. Shortwave Radio Antenna Preamp Kit W7iuv Diy Low Noise Rf Am $ 2,929. htm. w7iuv preamp. When I said 20db of gain, it was actually 10db. Resources listed under Amplifier category belongs to Amplifiers main collection, and get reviewed and rated by amateur radio operators. Thus the S/N and the output level of the Flag was many dB's higher than the Pennants. The original W7IUV amplifier is in the Rotatable Flag Antenna article at http://www. Having built a number of poor-performing, noisy preamps, this preamp is very quiet. Se occorre un pre con un guadagno leggermente maggiore si puo' dare un' occhiata qua: I found nothing of quality under about $80 so I decided to produce a low cost kit. Doppler shift in frequency. Emisor-sincronizador 3d Rf Pk-em2 $ 800. Top Number of QSOs. Dammi retta! p. buried on their feeding line). There will also be a few outside links thrown in for items I have found on the web that I’d like to be able to find again. Flag FO0AAA Loop rx antenna kit. FM5CD. When I started I don't sell parts, kits, or assembled units. KIT (1) Měřen Details about Preamp for Flag/Pennant LOOP HF Antenna HAM RADIO & SWL, 50 Ohm AD8129The version of this Kit, is the one published by the famous enthusiast of the QRP and armed Casero Doug Demaw W1FB (sk), also includes 700hz of Offset in transmission and a filter of audio of 700Hz. This allows worldwide contacts on frequencies where contacts are normally line of sight only. As I described in my previous post , there are two splitted ones. while another site any have cut in the fix but is using numbers from a lower block. K1JT’s WSJT Program Inexpensive PC sound card to radio interface kit Find great deals on eBay for antenna preamp. It had the same very poor +35 dBm OIP3 as the three other Chinese transistors. sided trough plated PCB with the solder mask for HF (short wave) W7IUV design antenna preamplifier. Volba padla na konstrukci podle Larryho W7IUV, především pro jeho odolnost (OIP3 +41 dBm). Don't bother 15 Tháng Mười 20164 Tháng Bảy 201724 Tháng Bảy 201228 Aug 2015 I tested the K 'n P model preamp which I had built for a friend against a W7IUV which I had built some years before 'dead bug” style for myself 26 Feb 2016 W7IUV preamplifier for LB antennas - Revision 5 (built 2003). SWLs and Radio Amateurs around the world have come to rely on the advanced operational performance of DX Engineering RPA-1 Receive Preamplifiers. Do you need an RX antenna preamplifier? So why to pay a lot of money for semi-professional products? The original PAS phono preamp (shown above) has good frequency response in the audio band (PHONO STAGE, below) except for a 2dB peak around 25Hz. com. Need to move antenna AZ/EL to track. Ok, senior moment. Konstrukce je velmi jednoduchá a při doržení pokynů uvedených v návodu funguje na první zapojení. The Electroluminescent Receiver Kit. qsl. W7IUV BEVERAGE PREAMPLIFIER PCB for experimenters 2N5109 or DCP68 transistor - $4. Antennas, ground systems. My search for a low band preamp started many years ago. net, www. The PDF has a lot of information on the construction details and Larry – W7IUV. DX Engineering RPA-1 Receive Preamplifiers offer superior receiving results on today's crowded medium and shortwave bands as well as on the ham bands. Somehow I figured out where the 40 meter novice band was, and used that to make all of my contacts as a novice, and they weren't that many. 23-10-2006 15:34 The QRP Labs Ultimate 3S beacon (kit) is a reasonably-priced, compact and self-contained unit. About preamps for ham radio use is a curation of 50 resources about , Mizuho products, The 50MHz Assistant, 23cm dual stage preamp, 432MHz Low Noise Preamp, Motorola Micor Highband Preamp. Project, based on ATMega32u4 From owner-rsgb_lf_group@blacksheep. Puoi usare il W7IUV ma devi mettere un filtro passa banda, per quella di interesse, all'ingresso e se puoi anche in uscita, altrimenti ti trovi verso il ricevitore tutti i rumori del mondo. The TMB-1 is an RF amplifier unit / receiving accessory that can be used with a low-impedance broadband loop, a high-impedance terminated loop (such as a Pennant, Flag, or Kaz Delta), and whip (telescoping rod) antennas. August 31, 2015. YCCC Receive Antenna Feedpoint Preamp Kits are used on their YCCC Receive Vertical Array Kits and Kit Packages to provide constant and consistent 75 ohm impedance, regardless of frequency, between shortened vertical elements and the array phase controller. Moon moves. 75. 791 – 14. Envío a todo el país . F6BKI & F1TE --> 2N5109. zip Fuel Flow Monitor designed for nautical usage. Also resolder around the RF RX preamp and first mixer area (that is on the same unit. to make life simple. The relays are to remotely switch the preamp in and out of the signal path. carr mmic preamp using mar-6 ic. Larry is also WH2XGP Part 5. Category. La documentation, bien que contenant toutes les informations nécessaires, n’est pas des plus claires concernant le bobinage du transformateur T2. Sort of. popular electronics dec95. Find great deals on eBay for ham preamp. com A New Amateur Band After many years on the air using experimental licenses and intense politicking, at the 2012 World Radio Conference (WRC) amateurs were allocated a new MF band: 472-479 kHz. There is data contained within that is necessary to obtain maximum performance from this circuit. On-board guitar preamp possibilita' di aggiunta di rumorosita' e distorsione nel segnale e quindi il cavo in ingresso potrebbe fungere da antenna per i segnali indesiderati; Dal punto di vista costruttivo, l'amplificatore operazionale può essere Con la radio si vola 432 AND ABOVE EME NEWS MAY 2006 VOL 34 #5 Note: E-mail addresses modified! [@@] EDITOR: AL KATZ, K2UYH; SCHOOL OF ENGINEERING, THE COLLEGE OF NEW JERSEY, PO BOX 7718 EWING, NJ 086 Search. Gary Sutcliffe, W9XT. 1-11 There is a lot of interest and new-comers frequently ask, “What is the best. Crispino I5XWW vende il kit completo per la costruzione del preamplificatore di W7IUV! In September 2004 PY1NR announced he had discovered: -on RF board Preamp Q10 and -on the IF board 2nd balanced mixer Q4, had been drawn on the circuit boards and mounted in the reverse orientation to that shown in the Kenwood Circuit Diagram. first disconnect connector #2 on the PLL board and check the voltage at connector #5 pin 5. 50. A New Amateur Band. This is a fairly simple antenna – essentially a short whip or rod, under 10′ in length, connected directly to a high-gain preamp. In 2000, we started to put up (at a flat, country location) a short vertical antenna by Butternut, the HF2V It has the 160-meter coil kit, is top-loaded with four wires (each about 5 meters long) and has six ground radials about 40 meters long for 160, 80 and 40 meters. A 150mm long teflon pre-terminated coax jumper is used to interface the FSJ4-50 receive cable to the preamp. The video is taken July 3 on a good 6m opening to Scandinavia. Italian EME-ARI Marathon 2013 . The Rotary Flag antenna referred to below is the single rectangular loop design made popular by K6SE & W7IUV. North Pole Contest Group. 70. I'm glad you asked this question, as it finally motivated me to compare the two schematics to see the reason that W7IUV's preamp draws so much more current than mine. The 2N5109 Amplifiers. S. cornell regen receiver preamp. Pour cela deux solutions : soit ajouter 3 résistances dans les emplacements prévus sur le CI du préampli pour un atténuateur 3-6dB, soit tout simplement dérégler un peu l Vhf preamplifier Pour revenir au kit par lui-même, il m’a aussi posé des soucis. s. Re: Topband: Bandpass filters for receive antennas / LW 225khz rejecting, Maciej Wieczorek, 15:30; Re: Topband: Bandpass filters for receive antennas Moon Bounce For QRPers. 73 Mike W0BTU , Mar 2, 2009 LF-HF Preamp This is a further progression in the application of the J310 JFET in high performance preamplifiers. In itself the Beverage is a fine solution to low band reception. In September 2004 PY1NR announced he had discovered: -on RF board Preamp Q10 and -on the IF board 2nd balanced mixer Q4. com/preamp60/preamp_r60. W7IUV Radio Antenna Preamplifier Kit. 1. This Rotary Flag antenna was deployed at NX4D for a few months prior to being converted to a 2-loop WF reusing the same simple fiberglass tube frame. Unfortunately Trygve’s radio has a damage to transmitter and we have no QSO. isrance. You will get - ISOLATED transformer with preamp (30dBm) on AD8129 in waterproof box - 950 ohm / 2watt non-inductive termination resistor - also in waterproof box. After much experimentation we have found its very difficult to cascade preamps without increasing the noise. Top # NA + SA QSOs by European station De volumenaam van station Z is ? Het volumenummer is 011C-01FC Map van Z:\datasheet\Comm 23-10-2006 15:42 . com/shared_projects/DR1anEtj Retro CV Meter Retro CV Meter A utility board that converts a +/-10V CV signal to a current level compatible with a retro o n 17 Meter kit . Low Band High Performance Preamp Larry – W7IUV Revision 5 copyright 1998­2009 Note: Please read the entire document before starting to build this project. The New 630m Amateur Band Rudy Severns N6LF, WD2XSH/20 n6lf@arrl. 12x $ 79 03. all rugged. Resources listed under Preamp category belongs to Technical Reference main collection, and get reviewed and rated by amateur radio operators. 4. There are times, however, where a preamp at the feedpoint makes a huge difference. w7iuv preamp kitMTM Scientific Inc offers the Battery Amp-Hour Meter Circuit Kit. Typically a SW listener, he got the RF bug and his first ticket in 1988, then to an Advanced class in 1990. W2GD Team. Plan reduced-size K9AY for 80/40, maybe 160. Hi all, as I received several emails with questions about the preamplifier which I The preamp for this loop is designed by Larry W7IUV on his highly informative website, here: w7iuv. Barcelona - Spain Se ben ricordo, il preamp KD9SWX e' un dual gate con ingresso ed uscita accordati, per banda specifica. org X-Spam-Level https://oshpark. Designed originally as a preamplifier/buffer for the DD1 frequency counter, the AADE HF Preamplifier can be mounted inside a radio, or built as a stand-alone HF preamp (antenna amplifier) I also had a fifth Chinese 2N5109 which came in a "W7IUV Preamp" kit. By this you can obtain higher IP3 - see next post :-) Pream is loaded with 3dB ATT and diplexer. Other W0BTU broadband preamps based on same design, using MRF5812 NPN bipolar transistors. He bought a Knight Kit Span Master, 2 tube regenerative receiver. But still, quite an improvement for RX on the magloop! One source for the pre amp kit In preparation of the upcoming CQWW 160m Contests my friend Hannes, DK1NO was so kind to give me one of his W7IUV broadband, high IP3 preamplifier. com/shared_projects/2iOL24h6 FuelFlowMeterV1. w7iuv preamp kit The relay is energised for RX. M2 preamp. 2This is our enhanced version of the W7IUV Low Band QSO Labs W1FB Pixie the 160-meter coil kit, is top-loaded with four wires (each about 5 meters long) and has six ground radials about 40 meters long for 160, 80 and 40 meters. PreAmp and Sandpiper MV6+3 Antenna 40m above ground Cushcraft A3S with 40m kit: 13. RX à conversion directe F5HD / F6KFT- The W7IUV amplifier is good sof VLF and low bands. Built IK4AUY 2N5109 push-pull preamp from QEX article—needs finished and tested. 222 MHz band. 7dB, attained with the help of positive feedback resistor RPFB = 47k connected between the cathodes of the first and second gain stages (nodes 1C and 2C). SDR RX. W7IUV preamp. pdf. com Lot’s of MF/LF stuff here. W7IUV Radio Antenna Preamplifier Kit The RADIO ANTENNA PREAMP KIT (#PREAMP) from MTM Scientific is for building a low noise radio antenna preamplifier for the 1 to 30 MHZ frequency range. Envío gratis a todo el país . hot-di p galvanized sreel and all hardware is indited for corrosion re. stronie. The Beverage Antenna! W. Plaque Donor