hf df system
6 links
Antennas : Homebrewing Techniques
- Antenna Gain Comparison System
- This device goal is to optimize homebrew antenna for the V/UHF band. This tool, is based itself on the simultaneously comparison between two antenna, directly in dB. by IK0BDO
[ Hits: 2212 | Votes: 12 | Rating: 5.58 ]
- Understanding Standing Wave Ratios SWR
- We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver'
s output power verses the portion of that power reflected by the antenna system
[ Hits: 8713 | Votes: 8 | Rating: 4.75 ]
- Radials on Vertical Antennas
- Experimental Determination of Ground System Performance for HF Verticals
[ Hits: 1395 | Votes: 9 | Rating: 6.67 ]
- The ZS6BKW Multiband HF Antenna
- Antenna design from ZS6BKW (G0GSF), similar to the G5RV, but it actually resonates on five bands
It's only 90 ft long 27.51 m, with a 40 ft 12.2 m downlead
[ Hits: 6499 | Votes: 8 | Rating: 6.88 ]
- FM Repeater & Simplex Channel System 70 cm / 2 m / 6 m / 10 m & Offsets
- A very useful table with frequencies for HF VHF UHF repeaters including offsets, steps, grouped by country, with special reference to european band plan.
[ Hits: 825 | Votes: 1 | Rating: 3 ]
- Repairing a TE-Systems 1452G
- Slides of a TE systems 1452 reparation including the schematic diagram of this monoband VHF RF Power amplifier
[ Hits: 487 | Votes: 4 | Rating: 7.25 ]
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