variable antenna7 links
- 40m portable antenna tuner
- A small-sized portable antenna tuner for the 40 meter band end-fed half wave antenna based on a toroid core and a variable capacitor by VK5ZVS
[ Hits: 1674 | Votes: 6 | Rating: 7.83 ]
- Cheap antenna to make from 160m - 6m
- The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD
[ Hits: 41763 | Votes: 21 | Rating: 7.67 ]
- Coca Cola Loop Antenna
- The Coke Loop is a Small Magnetic Loop Antenna tuned by a trombone-style variable capacitor made with standard soda cans
[ Hits: 2012 | Votes: 6 | Rating: 6.00 ]
- An automatically tuned 7-30MHz mobile antenna
- This is a base-loaded vertical antenna that mounts on the car's roof. The loading coil is designed as a variable inductor, with a three-legged chariot that travels up and down inside the coil, with grooved brass wheels running on the coil turns, and driven by a slotted rotor tube.
[ Hits: 3711 | Votes: 2 | Rating: 1.00 ]
- A Variable Base-Loading-Coil
- A Variable Base-Loading-Coil for use under a HF Mobile Whip
[ Hits: 1197 | Votes: 1 | Rating: 9.00 ]
- QRP Z-Match Tuner 40-10m
- The Z Match is really a basic L Match consisting of a series capcitor and variable shunt inductor, coupled to the antenna using the RF transformer action.
[ Hits: 1099 | Votes: 0 | Rating: 0.00 ]
- Automated use of EZNEC. AutoEZ is an Excel application that works in conjunction with the EZNEC antenna modeling programs and allows you to use variables to control diverse aspects of the model. You can then run multiple EZNEC test cases while AutoEZ automatically changes one or more variables between runs. Commercial version and free demo available for download.
[ Hits: 171 | Votes: 0 | Rating: 0.00 ]
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