ring antenna
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Antennas : 2M- 144 MHz 5/8 whip antenna
- Making your own 2 metre (146 MHz) 5/8th wave whip antenna
[ Hits: 7238 | Votes: 29 | Rating: 6.65 ]
- 7 element Yagi Antenna for 50 MHz
- 50 MHz extended 6-7 element ZX-Yagi antenna. Dimensions for the 7 elements and information on performance of a 2 stacked antennas featuring a total max gain of 20.8 dBi
[ Hits: 795 | Votes: 2 | Rating: 6.5 ]
- Baluns on Log Periodic Antennas
- Some antenna manufacturers place baluns at the incorrect location in LPDA arrays, or tell you to route the cable incorrectly. This can cause substantial RFI and all sorts of weird problems like RF into house wiring.
[ Hits: 2572 | Votes: 5 | Rating: 4.8 ]
- A Field Guide to Simple HF Dipoles
- A scanned PDF of this interesting book on HF Dipole antennas published by Stanford Research Institute
[ Hits: 1282 | Votes: 1 | Rating: 8 ]
- Lowering NVIS antennas
- Lowering an NVIS or N.V.I.S. antenna very close to the ground enhances NVIS operation
[ Hits: 1887 | Votes: 3 | Rating: 8 ]
- Antenna Efficiency
- K0BG article con antenna efficiency covering topics like radiation resistance, coil losses and ground losses, other kind of losses. How calculate efficiency and Bandwidth Notes
[ Hits: 458 | Votes: 0 | Rating: 0 ]
- Large Antenna in a fixed direction?
- If your antenna is fixed in one direction, you will notice that your antenna works perfectly only during fall and spring.
[ Hits: 332 | Votes: 0 | Rating: 0 ]
- Human Body Resonance Frequencies
- Wondering whether human body could be used as an antenna.
[ Hits: 401 | Votes: 1 | Rating: 10 ]
- Tuning HF Coaxial Antenna Traps
- The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency.
[ Hits: 1960 | Votes: 2 | Rating: 4 ]
- WA0DX Turkey Island DX Club
- The club was founded in 1987 when a group of ham operators hauled radio gear, antennas, and a generator to the island by boat to operate portable during ARRL Field Day
[ Hits: 245 | Votes: 1 | Rating: 8 ]
- LZ Antenna
- LZ Antennas LTD is specializing in manufacturing antennas HF multiband Yagi and vertical antennas. LZAntenna is based in Bulgaria
[ Hits: 1933 | Votes: 12 | Rating: 7.42 ]
- LF antennas
- Welcome to our line of Low Frequency, Natural Radio Research, Broadcast, Marine and Shortwave products. Our evolving product line is the result of our dedicated research efforts primarily in the areas of LF, VLF, MF, and HF.
[ Hits: 311 | Votes: 0 | Rating: 0 ]
- Benelec
- Radio Communication Base Station, Marine, Cellular and Mobile antennas covering all bands between 2-6000MHz, Communication Accessories, Coaxial Cable, Coaxial Connectors and Accessories
[ Hits: 914 | Votes: 2 | Rating: 6 ]
- Mecca Industry Co. Towers
- Crank-up(telescopic) and tilt-over tower, Ring rotator for mounting an extra antenna, from 16m to 42m, Strong safe and smooth, Radio communication and commercial tower.
[ Hits: 978 | Votes: 5 | Rating: 7.8 ]
- Meteor scatter or meteor burst communications
- A summary, overview or tutorial covering the basics of Meteor Scatter or Meteor Burst Communications, a form of radio signal propagation often used at VHF.
[ Hits: 448 | Votes: 0 | Rating: 0 ]
- Cushcraft X7 at WD5NGB
- X7 antenna pictures during installation and report on first contacts.
[ Hits: 530 | Votes: 0 | Rating: 0 ]
- HERALD P2P radio link design
- Sw tool to design point-to-point multi-hop microwave links and networks, 400MHz to 58 GHz. Site/Hop Configuration; Customized Antenna & Radio Equipment Libraries; Link Budget; Path Profile Analysis ,clearance, reflections; import path profiles from SRTM maps, free download.
[ Hits: 576 | Votes: 5 | Rating: 6.8 ]
- XPhase - Interference reduction
- The function of the XPhase is based on the fact that the interfering signal, received by an auxiliary antenna, is added phase-shifted to the signal received from the main antenna. When the phase-shift is more or less 180°, the interfering signal is canceled out.
[ Hits: 732 | Votes: 0 | Rating: 0 ]
- What Does Your SWR Cost You ?
- Wondering whether to spend a fine day with the YL or with the antenna? This article may help you decide by W1GV
[ Hits: 685 | Votes: 0 | Rating: 0 ]
- R.F. Current Meter
- This R.F. current meter was developed to assist in measuring line currents in balance feed lines as used in the All Band HF Antenna.
[ Hits: 625 | Votes: 1 | Rating: 1 ]
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