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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: 2501 | Votes: 5 | Rating: 3.2 ]
- BRASIL-DX International
- International Brazilian DX Group
[ Hits: 1086 | Votes: 4 | Rating: 8 ]
- SIERRA PAPA, International Dx & Packet Group
- International Organization working for a complete 11 mt. band, Radio Foundation G. Marconi's Memory
[ Hits: 867 | Votes: 3 | Rating: 8.33 ]
- International Communication Friends
- Official website of the ICF group
[ Hits: 1749 | Votes: 58 | Rating: 6.93 ]
- November Echo International D.X. Group.
- 11 metres d.x. group northeast england.
[ Hits: 940 | Votes: 7 | Rating: 6.86 ]
- Foxtrot Lima
- Foxtrot lima is international 11 meter dx group from Finland.
[ Hits: 1039 | Votes: 3 | Rating: 6.67 ]
- SIERRA PAPA - International Dx & Packet Group
- We are an International Organization working for a complete 11 mt. band - Radio Foundation G. Marconi 's Memory
[ Hits: 2631 | Votes: 1 | Rating: 1 ]
- A Sleep Strategy for DX Contesting
- Sleeping tecniques during contest operations.
This article originally appeared in the National Contest Journal.
[ Hits: 437 | Votes: 0 | Rating: 0 ]
- Omiss
- OM International sideband society incorporated nets 75M, 40M, and 20M Nets begin one hour earlier during Daylight Savings Time
[ Hits: 2107 | Votes: 9 | Rating: 9.68 ]
- IARC 4U1ITU
- International Amateur Radio Club at ITU - IARC information and official web site of 4U1ITU IARU club station
[ Hits: 1199 | Votes: 2 | Rating: 1.5 ]
- FRR - Romanian Amateur Radio Federation
- Federatia Romana de Radioamatorism (Romanian Amateur Radio Federation)- The national non-governmental hamradio association in Romania
[ Hits: 1512 | Votes: 7 | Rating: 7.29 ]
- ACOM
pop
- ACOM international, manufacturer of HF power amplifiers, HF Antennas, Antenna tuners, Switches and Crankup masts
[ Hits: 27293 | Votes: 18 | Rating: 6.89 ]
- International Antenna Corporation
- Double bazooka antennas
[ Hits: 2907 | Votes: 12 | Rating: 7.09 ]
- INRAD International Radio
- Supplier of custom designed, high performance
quartz crystal filters for communications
receivers and transceivers, for Yaesu Icom Kenwood and Collins radios
[ Hits: 2150 | Votes: 5 | Rating: 8 ]
- PCE Int.
- PCE International Inc, towers and accessories
[ Hits: 3085 | Votes: 6 | Rating: 5 ]
- Radio Alphabet
- Listen to phonetics recommended by the International Telecommunication Union, or ITU.
[ Hits: 2692 | Votes: 2 | Rating: 3.5 ]
- The National Traffic System
- ARRL National Traffic System for routing formal written message traffic
[ Hits: 1422 | Votes: 2 | Rating: 8.5 ]
- Australian RTTY Society
- Australian National Amateur Radio Teleprinter Society (ANARTS)
[ Hits: 1213 | Votes: 2 | Rating: 1 ]
- Canadian International DX Club
- Not-for-profit organization serving the radio monitoring community founded in 1962
[ Hits: 1586 | Votes: 4 | Rating: 6.25 ]
- National Radio Club
- The National Radio Club is the world's oldest and largest Medium Wave DX club, founded in 1933.
[ Hits: 2703 | Votes: 4 | Rating: 9.5 ]
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