Antennas : Helical
- The Gain of the Axial-Mode Helix Antenna
- by Dr. D.T. Emerson, National Radio Astronomy Observatory (NRAO++). Antenna Compendium Volume 4, pp 64-68, 1995, published by the ARRL.
[ Hits: 2415 | Votes: 5 | Rating: 3.2 ]
- Hybrid Antennas
- Antennas that use a combination of vertical and horizontal polarisation.
[ Hits: 4588 | Votes: 2 | Rating: 6.5 ]
- Short Vertical Antennas and Ground Systems
- This article describes how an effective ground system can be produced for a short vertical antenna.
[ Hits: 23175 | Votes: 11 | Rating: 6.08 ]
- N. American Data Communications Museum
- Telephony technology from telegraph to digital transmission
[ Hits: 967 | Votes: 0 | Rating: 0 ]
- Mongolia DX Association
- Mongolian DX club with a lot of dx info and an online DX newsletter
[ Hits: 605 | Votes: 3 | Rating: 1.67 ]
- Grey Line Map
- Earth view, with satellite data provided by The Living Earth.
[ Hits: 13495 | Votes: 70 | Rating: 6.55 ]
- Grey Map
- Gray line map in black and white
[ Hits: 2246 | Votes: 0 | Rating: 0 ]
- Texas Towers
- Ham radio products, with on-line catalog and prices
[ Hits: 15859 | Votes: 16 | Rating: 8.44 ]
- Sirtel produces a wide range of radio and telecommunications antennas
[ Hits: 2874 | Votes: 14 | Rating: 3.84 ]
- DTMF, RF, decoders receivers and accessories icluding computer interface boards, frequency counters, tone decoders, spectrum sweeper and nearfield receivers
[ Hits: 3793 | Votes: 5 | Rating: 6.2 ]
- All Electronics Corp.
- Surplus and electronics parts. On-line catalog available.
[ Hits: 2528 | Votes: 1 | Rating: 9 ]
- Keys and paddles by morsex
[ Hits: 10523 | Votes: 33 | Rating: 5.3 ]
- Monitoring Times
- Monitoring Times, SWL, BCL, montly reports, Broadcast band, satellite television, long-wave coverage, Reviews of new products and radio-related software.
[ Hits: 4691 | Votes: 13 | Rating: 8.53 ]
- Moon Calendar
- Current moon phase and monthly moon calendar
[ Hits: 787 | Votes: 4 | Rating: 8.5 ]
- Australian RTTY Society
- Australian National Amateur Radio Teleprinter Society (ANARTS)
[ Hits: 1088 | Votes: 2 | Rating: 1 ]
- 3905 Century Club RTTY Net
- The RTTY Net is one of several Nets run by the 3905 Century Club. There are SSB Nets on 160, 75, and 40 Meters and CW Nets on 80 and 40 Meters
[ Hits: 2148 | Votes: 7 | Rating: 7 ]
- AMSAT Colorado
- The Colorado AMSAT Net Page
[ Hits: 576 | Votes: 2 | Rating: 5.5 ]
- Universal Radio
- Online Catalog. All about Radio comms, HF VHF Scanner CB radios, antennas and accessories
[ Hits: 28895 | Votes: 31 | Rating: 7.09 ]
- Weather Satellite FAQ
- A comprehensive guide to receive Weather Satellites signals in wefax mode
[ Hits: 1870 | Votes: 1 | Rating: 8 ]
- GcmWin : Great Circle Map
- GCM is a freeware great circle map plotting software for windows, you can choose colours, scale, meridians, fields and or squares from the maidenhead locator system.
[ Hits: 24684 | Votes: 75 | Rating: 6.53 ]
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