rf antenna

437 links - and 1 categories

Delta Loop DX Antenna for 40 meters band - A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
[ Hits: 433 | Votes: 3 | Rating: 6.33 ]

3 element Yagi Antenna On-line Caluclator - This article includes an online calculator for a 3 element Yagi Antenna. The formula and basics theory of Yagi Antenna are also explained with examples.
[ Hits: 839 | Votes: 19 | Rating: 4.59 ]

Homemade 2M/440 J-Pole Antenna - A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials.
[ Hits: 1049 | Votes: 5 | Rating: 3.4 ]

QRP Link Dipole Antenna - Dipole antennas are some of the simplest antennas to build in addition to being very efficient and solid performers. I wanted to make a simple dipole antenna for QRP portable operation that could be used on multiple bands.
[ Hits: 283 | Votes: 2 | Rating: 7.5 ]

EME Dish Antenna Project - A 3.2m EME dish project that provides a better performance on 1296 MHz (10+dB sun noise vs. 6dB with my 432 array) and an even better performance on 2304 MHz
[ Hits: 346 | Votes: 0 | Rating: 0 ]

The Classic Beverage Antenna Revisited - This is a QST Article published in January 1982 by W1FB D. Demaw and HH Beverage and is a complete review of the original article published in 1922, which updates and reivew the beverage antenna theory and developlment, explaining the antenna design of transformers and gives accurate reports on antenna general performance.
[ Hits: 563 | Votes: 1 | Rating: 6 ]

How setup the antenna tower - A multiple page article about assembling the antenna system, this section includes informations on constructing of the concrete tower base, starting from setting up correctly the foundations in relation to the antenna height.
[ Hits: 220 | Votes: 1 | Rating: 8 ]

An Automatic Antenna Tuner - An homemade antenna tuner project that should be small, easy to build and cheap. This automatic antenna tuner can work as locale or as remote. The tuner has EEPROM memory for store settings for faster tunning and four interfaces
[ Hits: 493 | Votes: 3 | Rating: 9 ]
Antenna Tuner Basics - In search of the perfect antenna - An article that explain with simple concepts and basic theory the correct usage of antenna tuners. It covers some aspects of common questions newcomers have on what antenna tuners are for, and what antenna tuners will never do.
[ Hits: 476 | Votes: 0 | Rating: 0 ]

DIY Dual Band 144-440 MHz vertical antenna - A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
[ Hits: 1377 | Votes: 14 | Rating: 5.5 ]
VHF-UHF Long Boom Very High Performance Antenna Designs - Experimental Long Boom Antennas - CP, LPDA, multiband with several NEC Files for 50MHz 144MHz 222 MHz 432MHz but also 902MHz and 1296 MHz Antenna projects. Includes also for each antenna model, in a general comparison table each antenna characteristics including Directive Gain, G/T, E-F/R, H-F/R abd Boom Length. This is a great value comparison table of several commercial and home made VHF UHF antenna projects.
[ Hits: 190 | Votes: 1 | Rating: 10 ]

IV3ONZ's Ham Radio Blog - Ham radio activity and homebrew from Italy with some interesting article on QRSS, decoding interfaces, APRS and antennas
[ Hits: 200 | Votes: 2 | Rating: 10 ]

R3KBO EB104.ru Amateur Radio Products - R3KBO is an amateur radio club producing and developing amateur radio kits and assembled products including HF VHF Power Amplifiers or RF Power Kits and amplifier parts, low pass filfers, band pass filters, sourge protections, splitters and combiners, antenna switches
[ Hits: 513 | Votes: 1 | Rating: 10 ]

Saluki Technology Inc. - Saluki manufacturer of Spectrum Analyzer, Handheld Spectrum Analyzer, Signal Analyzer, Cable and antenna analyzer, Network Analyzer|RF Signal Generator, Cable Antenna Analyzer
[ Hits: 136 | Votes: 0 | Rating: 0 ]

The MonoGap Antenna for 30m Reviewed - A review of the 30 meter MonoGap Antenna. This review covers from the unboxing go the Gap product, the assembly of the elements, the test and tuning phase and a performance report during the years
[ Hits: 241 | Votes: 1 | Rating: 10 ]
Challenger DX Antenna Review by NK7Z - A review of the GAP Challenger DX Antenna that is not a traditional 1/4 wave vertical, but is a vertical dipole, this gives it several advantages over a standard 1/4 wave vertical, mainly the reduced number of radials, with excellent performances.
[ Hits: 221 | Votes: 2 | Rating: 10 ]

Maldol MFB-300 HF vertical antenna review - The Japanese-made Maldol MFB-300 HF vertical antenna offer extremely wide-band performance, with a specified frequency range of 1.0-60 MHz.
[ Hits: 434 | Votes: 2 | Rating: 5.5 ]

UKW-Berichte Telecommunications - On-line shop for coax cables, RF connectors, Lightning protectors, Create antenna rotators, antenna masts and mounts, amateur antennas by FlexaYagi, Tonna F9FT, ANjo-Antennen and M2 Antennas based in Eggolsheim Germany
[ Hits: 272 | Votes: 0 | Rating: 0 ]

LogHX freeware logger software - LogHX is a freeware windows ham radio logger software, designed as complete Ham Radio environment. Radio control interface, online log book interfaces, cluster access, adif and cabrillo exports, antenna rotor control, Digital CW and SSB macros, full QSL management
[ Hits: 735 | Votes: 4 | Rating: 9.5 ]

RF Front End Protector - If You are using a separate receive antennas then you need a good protection circuit to eliminate the possibility of blowing out the receiver front-end while using these auxiliary receive antennas specially on low bands.
[ Hits: 178 | Votes: 0 | Rating: 0 ]