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57 links

Loop Antenna Design - Full-wave loops are very popular antennas. They are especially useful on 80 and 40 meters where they perform well at modest heights
[ Hits: 2295 | Votes: 1 | Rating: 10 ]

GDXF - German DX Foundation - The German DX Foundation (GDXF), founded in 1996, was established to support HF DX activities - on all bands or modes - to rare countries all over the world
[ Hits: 1163 | Votes: 10 | Rating: 6.6 ]

The Considerate Opertator's Frequency Guide - An ARRL guide to where on the HF bands various modes and activities are generally found.
[ Hits: 4166 | Votes: 5 | Rating: 6.4 ]

The San Diego Six Shooters ham radio club - The San Diego Six SHooters Amateur Radio Club, established in April 2001, is dedicated to promoting all modes of operation on the Six Meter Amateur Radio Band.
[ Hits: 1819 | Votes: 13 | Rating: 8.85 ]

European PSK Club - The European PSK Club, or EPC for short, is an informal club of amateur radio operators dedicated to maintaining high levels of amateur radio communications on PSK modes. Its purpose is to promote activity and good operating practice on the PSK modes on all amateur bands
[ Hits: 1088 | Votes: 1 | Rating: 10 ]

Sound samples of digital transmissions - Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".
[ Hits: 3225 | Votes: 8 | Rating: 8.75 ]

About AMTOR - AmTOR may be considered as the next development from RTTY. AmTOR was introduced to overcome the problems with RTTY. As a result of its performance, it has become popular on the HF bands because it gives more reliable communication, especially when interference is present. It achieves this by using a coding system that allows errors to be detected and corrected.
[ Hits: 363 | Votes: 0 | Rating: 0 ]

Sights and Sounds of Digital Signals - Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ
[ Hits: 1044 | Votes: 3 | Rating: 6.67 ]

EME resources by DL4EBY - Several kinds of operational data needed for Amateur Radio moonbounce (EME, earth moon earth) communications, the technical challenge amongst the various propagation modes on VHF, UHF and microwaves
[ Hits: 423 | Votes: 0 | Rating: 0 ]

Frequency Calibration for Weak Signal Work - Accurate calibration of your receiver and sound card is necessary for good results with the weak signal modes in use at LF. Modern receivers with master oscillators that are synthesized to provide all conversion frequencies greatly simplify the process. This article describes a method of making the necessary measurements and adjustments to an ICOM R75 receiver and a sound card, using the ARGO software
[ Hits: 873 | Votes: 1 | Rating: 7 ]

K6MVR MVRC Radio Club - The Mt.Vaca Radio Club (Call sign K6MVR ) owns and operates repeater systems in and around Sacramento, California. The systems provide reliable coverage for mobile stations throughout the Sacramento Valley region and beyond to Modesto, Chico, the Sierras, and parts of the Bay Area.
[ Hits: 1061 | Votes: 1 | Rating: 10 ]

Yaesu 920 & SoundCard - This circuit provides an interface between the Yaesu 920 transceiver and IBM computer sound card which allows data transfer and control of PSK31, RTTY, KEYBOARD CW, and SSTV modes for Amateur Radio
[ Hits: 2301 | Votes: 8 | Rating: 3.99 ]

Yaesu FT-817 discussion group - Members discuss the operation of and modifications to this outstanding QRP rig that covers 160m 70cm with all modes. Site contains a large database of FT-817 FAQs and data files. Antennas, tuners, and power sources are also covered as related to this ultra-compact transceiver.
[ Hits: 12763 | Votes: 93 | Rating: 6.85 ]

ZLP Electronics - Yaesu Icom Kenwood CAT Interfaces. Isolated audio-DATA interfaces for ALL afsk DATA modes inc psk31 rtty sstv etc.
[ Hits: 1736 | Votes: 5 | Rating: 10 ]

Scancorder - With Scancorder you can record and replay audio from your scanner using your computer soundcard. The audio is recorded digitally as a wave file, so that even digital modes can be re-processed or analysed later.
[ Hits: 5834 | Votes: 3 | Rating: 3.33 ]

AIO All in One by WD8KNC - Windows contest logging software with multiple functions like antenna rotor control, dx cluster, cat control, voice and cw keying, supports many data modes, qrz lookup, pirint qsl and labels, mapping and more. Donationware software.
[ Hits: 12979 | Votes: 14 | Rating: 5.78 ]

TrueTTY - Program for amateur radio digital communications via a sound card. Supported modes are RTTY (Baudot code), ASCII (7 or 8 bits), PSK31 (BPSK and QPSK) and AMTOR-FEC (SITOR-B, NAVTEX). SELFEC SITOR decoding is possible also. No additional hardware required, need only a sound card. Optionally you can use simple circuit fo PTT-control. Can cooperate with RZ4AG AAlog logger.
[ Hits: 18285 | Votes: 855 | Rating: 7.35 ]

gMFSK - Linux free multimode HF terminal program. Despite the name, gMFSK can send and receive many digital conversational modes typically used by radio amateurs on HF. Supported modes are: MFSK (MFSK16 and MFSK8) RTTY THROB (1, 2 and 4 throbs/sec) PSK31 (BPSK and QPSK) PSK63 MT63 Feldhell
[ Hits: 4399 | Votes: 5 | Rating: 9 ]

WinPix32 - Slow Scan TV for Windows 95/98 and NT, WinPix32 supports all SSTV modes in all of the active SSTV families. Commercial demo available but discontinued
[ Hits: 4321 | Votes: 15 | Rating: 7.25 ]

FT-1000MP interface - YAESU FT-1000/MP/MARK V (filed) interface, this one of numerous RTX sound blaster interfaces you can find on the internet, but this one include: FSK KEYING to use with the RTTY port, DVS-2 to use the interface in AFSK mode, this include all digital modes + voice keyer, CW KEYING
[ Hits: 6890 | Votes: 1 | Rating: 10 ]