- William I Orr
The W6SAI Hf Antenna Handbook (ISBN 978-0-943016-15-3) The Radio Amateur Antenna Handbook (ISBN 978-0-8230-8706-8) Radio handbook (edited …
1 KB (190 words) - 18:16, 25 November 2007
- Rhombic antenna
A rhombic antenna is a broadband directional antenna invented by Edmond Bruce , mostly commonly used in HF (high frequency, also called …
5 KB (684 words) - 23:29, 12 November 2008
- ARC-5
MF/HF Antenna Relay | | CBY-29125 | BC-442-A | RE-2/ARC-5 | … The transmitter rack would hold a VHF T-23 and an MF/HF transmitter …
18 KB (3070 words) - 16:10, 27 March 2008
- Delano, California
America 's shortwave transmitters and numerous broadcasting antennas. … array antennas are some of the most directive HF antennas in use today. …
13 KB (1668 words) - 04:14, 4 January 2009
- Dassault Mirage III
A similar inconsistent variation in Mirage fighter versions was the presence or absence of an HF antenna that was fitted as a forward …
29 KB (4329 words) - 12:32, 6 January 2009
- Clansman
A TURF unit can be used both to artificially lengthen shorter antennas, and fine tune all HF antennas to exactly match the frequency in …
9 KB (1371 words) - 03:40, 30 October 2008
- Amateur radio mobile operation (section Mobile antennas)
Each installation would also have a vehicle-mounted antenna … Because of wavelength s in the 15- meter to 80-meter range, HF antennas …
4 KB (562 words) - 01:20, 20 December 2008
- 160-meter band
For most amateurs, the HF bands were much easier to use and HF antennas need a lot less real estate. After World War II, the 160 meter band …
7 KB (624 words) - 12:57, 23 November 2008
- Numbers station
The station hunter speculated that the antenna's transmitter at the … pioneered HRS 8/8/1 directional HF antennas for shortwave news and …
37 KB (5516 words) - 12:39, 4 January 2009
- Field Day
htm HF National Field Day contest each February, and a VHF Field Day … Some might use quickly deployable portable antennas while other might …
7 KB (1021 words) - 06:29, 21 December 2008
- Jindalee Operational Radar Network
larger antenna arrays and higher power transmitters, resulting in a … pdf | title JORN HF Antenna Arrays Project Completed | accessdate 2006- …
21 KB (2783 words) - 13:56, 19 November 2008
- Military Affiliate Radio System
of new technologies such as Voice over Internet Protocol and antennas. … JPG | MARS Operators erecting an HF antenna at Fort Meade for …
11 KB (1523 words) - 04:45, 11 December 2008
- Kosmonaut Yuri Gagarin
Two pairs of Vee Tube/Cone HF antennas. | … It had very distinguishable looks due to two extremely large and two smaller antenna dishes …
4 KB (601 words) - 11:17, 18 October 2008
- Amateur radio emergency communications
the portable VHF /UHF satellite and HF antennas in the background … Amateur radio operators are experienced in improvising antennas and …
8 KB (1164 words) - 19:33, 6 January 2009
- Capacitor (component)
Large-valued, tunable capacitors that can be used for resonating HF antennas can be made this way. Ceramic: The main differences between …
31 KB (4094 words) - 19:20, 6 January 2009
- Inverted vee antenna
An inverted vee antenna is a modified dipole antenna supported in the center with … sailing vessels requiring better HF performance than …
3 KB (419 words) - 12:13, 26 September 2008
- 10BASE5
Used but vampire-tap free lengths of this cable taken out of service makes for excellent feedline for amateur radio antennas, HF and VHF, …
3 KB (506 words) - 20:47, 6 January 2009
- Beverage antenna
The Beverage Antenna is a relatively inexpensive but very effective long wire … excellent directivity in Beverage antennas operated at MF or HF. …
9 KB (1325 words) - 02:53, 25 November 2008
- Radio masts and towers (redirect Antenna tower)
Radio masts and towers are, typically, tall structures designed to support antenna … Masts for HF/shortwave antennas: raising the antenna more …
16 KB (2296 words) - 23:38, 9 December 2008
- San Vito dei Normanni Air Station
In 1964, a HF monitoring/receiving system of a large circular antenna array for COMINT purposes was installed. This AN/FLR-9 receiving …
2 KB (379 words) - 17:24, 20 October 2008