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1138 links - and 11 categories

Antennas : Collinear Antennas : Dipole
  • W3FF Portable Dipole - This is the antenna w3ff designed for his walking portable station. It is a dipole constructed out of the plastic plumbing pipe CPVC. There are telescoping whips at the ends of each side of the dipole, and these whips are adjusted to bring the antenna into resonance on each of five HF Bands 10, 12, 15, 17, and 20 Meters
    [ Hits: 22059 | Votes: 14 | Rating: 8.13 ]
Antennas : J-Pole
  • Copper J-Pole Antennas - Conejo Valley Amateur Radio Club, article edited by Rory Eikland, KG6HCU and Ken Larson, KJ6RZ, they have had excellent experience building and using J-Pole antennas, and share their experience on planning VHF and UHF Jpole antennas.
    [ Hits: 14124 | Votes: 15 | Rating: 7.07 ]
Antennas : Mobile
  • Antenna Tuning - Tuning mobile and base antennas, measuring SWR.
    [ Hits: 6631 | Votes: 3 | Rating: 5 ]
Antennas : VHF UHF
  • VHF/UHF Yagi Antenna Design  pop - Design your VHF UHF Yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna for 2m and 70cm bands. This page offers a streamlined experience for Yagi antenna design enthusiasts. It assumes prior knowledge of Yagi design principles, minimizing distractions with a user-friendly interface. Equipped with essential equations, it provides instant design feedback. Red font warnings indicate design limitations, ensuring practical results. Constraints include Gain (11.8-21.6 dBd) and Boom Length (2.2-39 wavelengths), with additional frequency-dependent restrictions noted in input fields.
    [ Hits: 147401 | Votes: 1105 | Rating: 6.95 ]
DX Resources : Contest DX Resources : DX Peditions
  • 9V1CW Singapore - Singapore active during PACC (11/12-Feb-2006)
    [ Hits: 398 | Votes: 1 | Rating: 10 ]
Internet and Radio : Sounds
  • The PA2S 50 MHz Tape Archives - The PA2S Tape Archives. Many RealAudio sound clips of 50 MHz DX contacts, recorded during solar cycle 21 and 22.
    [ Hits: 819 | Votes: 0 | Rating: 0 ]
Operating Modes : Mobile
  • K0BG's ham radio mobile operator web site - This site is dedicated to mobile amateur radio operators, old and new alike. Whether you are into HF, or VHF operation, I trust the information presented will increase your enjoyment of our great hobby. With safety as a byword, there are articles on amplifiers, antennas, bonding, impedance matching, installing hardware, mobile equipment, noise and RFI abatement, wiring, and much more. I do my best to keep these articles up to date, and easy to follow.
    [ Hits: 4855 | Votes: 10 | Rating: 8.7 ]
Operating Modes : Radio Direction Finding : Clubs
  • Transmitter hunting, in San Francisco - Amateur radio direction finding, transmitter hunting. triangulating a radio signal direction and plotting its bearing on a map. hunters use doppler systems for tracking hidden transmitters
    [ Hits: 497 | Votes: 0 | Rating: 0 ]
Operating Modes : Stealth Amateur Radio
  • HF Antennas for restricted space - Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.
    [ Hits: 9187 | Votes: 7 | Rating: 5.28 ]
Shopping and Services : Regional : Europe : UK
  • Airband - Airband Online, Airband Scanners, Communications Monitoring, Shortwave and WorldSpace Radio Suppliers.
    [ Hits: 2680 | Votes: 2 | Rating: 7.5 ]
Software : APRS
  • Win APRS - Automatic Position Reporting System windows program, allow monitoring of real time geographical information such as the position of vehicles, the status of weather, radio direction finding and more.
    [ Hits: 21358 | Votes: 26 | Rating: 5.38 ]
Software : DSP
  • Phase 3D (AO-40) Decoder - This program demodulates the telemetry data signal transmitted by the AO-40 satellite (aka Phase III-D) using the PC sound card
    [ Hits: 1700 | Votes: 2 | Rating: 7.5 ]
Software : Log Analysis
  • Cabrillo Evaluator by W3KM - Contest adjudication software scores Cabrillo logs. Auto evaluates up to 2000 logs with duping, claimed score, actual score, cross checking, N-QSO rule, 5-min delta QSO rule. Support including code changes, non-scoring logs troubleshoot and summary output requests.
    [ Hits: 2631 | Votes: 7 | Rating: 7.64 ]
Software : Morse Code Decoders
  • CW Decoder  pop - This program allows CW operators to copy CW code with a computer. The decoded CW is displayed as text or can generate a side tone. There is a spectrum display of the audio with a sliding cursor to select a particular audio for decoding. The program also allows for keying a transmitter from the keyboard with full CW break-in operation.
    [ Hits: 53116 | Votes: 79 | Rating: 6.4 ]
Software : Morse Code Training
  • Morse Maker - MorseMaker is an up-to-date replacement for the Morse Machine shown further down this page. It has been re-written using a different programming language and is now entirely 'stand-alone' requiring no run-time support files. This version also works with Windows XP and can use the soundcard but please note that, unlike its predecessor, it does not split the alphabet into smaller 'learning' blocks and does not incorporate the Morse reader.
    [ Hits: 2389 | Votes: 9 | Rating: 6.23 ]
Software : Software Defined Radio
  • SpectraVue - A Windows based Spectral Analysis/Receiver Program primarily used with the SDR-IQ, SDR-14 , SDR-IP, RF capturing hardwares
    [ Hits: 1366 | Votes: 1 | Rating: 9 ]
Technical Reference : Mic wiring
  • CB Mic Wiring  pop - Excellent resource for microphones wiring including old make of cb radios. Microphone wiring can be a real pain if you arent sure how to work out which wire goes where. On this page i will try to explain the basics and also give you the wiring positions for most CB radio's
    [ Hits: 26760 | Votes: 41 | Rating: 5.46 ]
Technical Reference : Software Defined Radio
  • FCC Facilitate SDR technology - FCC adopts rule changes to faciliate deployment of Software Defined Radio technology
    [ Hits: 647 | Votes: 0 | Rating: 0 ]

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