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Antennas : 6M : 6 meter Yagi Antennas- A portable 3 element 6m Yagi
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- A small Yagi antenna for camper van. It is made of aluminum tubing, breaks down for storage, and works well for communicating with others. He built it in an afternoon and it gets good signal. The antenna is lightweight and can be packed up to fit inside his van while traveling
[ Hits: 38 | Votes: 0 | Rating: 0 ]
- TEFV Terminated End Fed Vee Antenna
- The Terminated End Fed Vee Antenna (TEFV) is a travelling wave antenna with constant current distribution. Unlike traditional resonant antennas, TEFV operates without standing waves, using a terminating resistor for broadband efficiency. With a combination of vertical and horizontal polarization, it offers wide bandwidth from 1.8 MHz to 30 MHz, eliminating the need for a tuner. Key components include a 9:1 unun transformer and a 500-ohm terminating resistor. Grounding and counterpoise enhance performance, and it can handle power losses of up to 30%. TEFV provides an effective, versatile antenna solution for amateur radio and broadcast applications.
[ Hits: 187 | Votes: 2 | Rating: 6.5 ]
- Foldable Yagi Antenna
- A home made RDF 3 elements Yagi that can be used for fox hunting. The particularity of this antenna is that it can be folded, in order to save space while travelling. In Dutch.
[ Hits: 236 | Votes: 1 | Rating: 10 ]
- FBK 2m-70cm dualband coax antenna
- A travel, or a fixed vertical coax antenna originally designed by PA0FBK. This antenna is very easy to make from a piece of 50 ohm or 75 ohm coaxial cable, and can be either smooth, roll-up version, or rigid cable
[ Hits: 354 | Votes: 3 | Rating: 9.33 ]
- Operating Amateur Radio Overseas
- Travelling with ham radio devices, Operating under CEPT, operating in the US, CEPT Operating Rules, Permanent Overseas Licence
[ Hits: 47 | Votes: 0 | Rating: 0 ]
- Aircraft Scatter ACS
- Getting started with Aircraft scatter, defined as the process of scatter radio waves of the body of a traveling aircraft in order to enhance the distance possible to bridge on VHF, UHF and microwaves. The ACS path, Equipment requirement and Operating techniques
[ Hits: 55 | Votes: 0 | Rating: 0 ]
- Tropospheric Ducting
- In the spring and during certain climatic events, radio waves can travel long distances due to an atmospheric phenomenon called Tropospheric Ducting.
[ Hits: 123 | Votes: 0 | Rating: 0 ]
- VHF APRS Propagation Map
- VHF – Based on realtime APRS reports. This map shows real-time radio propagation from stations operated near 144 MHz. It uses data gathered by Automatic Packet Reporting System-Internet Service (APRS-IS) from packet stations in the amateur radio service.
The map shows activity from the past hour. Paths are smoothed to create a color-coded footprint indicating the distance VHF signals are likely to be traveling.
[ Hits: 315 | Votes: 0 | Rating: 0 ]
- FT-817 Batteries for Air Travel
- Three cell Lipo batteries for the FT-817 work really well, although not really sure about taking them on aircraft. The Lipos intended for use on RC Electric airplanes generally have a very low internal resistance and no internal protection against short circuit.
[ Hits: 140 | Votes: 0 | Rating: 0 ]
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