antenna coupling

antenna coupling

Antennas : 15M

• 21 mhz half wave GP Antenna - 21 mhz half wave ant -very low radiation angle - full size and light weight- all coax matching system - decoupling care to prevent low angle radiation degrade
  [ Hits: 3104 | Votes: 6 | Rating: 2.17 ]

• Mini Whip - Active HF Antenna  ^new - The author investigated electric field antennas and achieved promising results with a shortened active whip antenna (30 cm). The findings suggest that at LF, active whips function primarily through electric field capacitance coupling.
  [ Hits: 66 | Votes: 1 | Rating: 10 ]

• Magnetic Loop 80-20 by N4SPP - A transmitting magnetic loop antenna that can cover from 80 to 20 meters band with a lot of experiments on coupling tecniques, and a pictures by N4SPP
  [ Hits: 2287 | Votes: 10 | Rating: 5.9 ]

• RX Loop antenna - This loop antenna is intended to be connected as an antenna for receivers that do not have a built-in antenna such as an HF set or an old tube radio. This square barrel is wound on a wooden frame. It consists of two windings that are galvanically isolated from each other, a main and a coupling winding. The diameter is about 40 cm.
  [ Hits: 60 | Votes: 0 | Rating: 0 ]

• The Weird Antenna Wire End Effect - A half wave wire that is tuned for resonance on 80m will NOT be resonant on 40m despite a precise harmonic relationship between the two bands. The End Effect is caused by a capacitive coupling between an unterminated wire end and the ground.
  [ Hits: 95 | Votes: 0 | Rating: 0 ]

• AA5TB Antenna Coupler / SWR Bridge - Wire antennas requires a special coupling network to properly couple my 50 ohm coax to the antenna's high impedance (5000 ohms)
  [ Hits: 4750 | Votes: 2 | Rating: 9.5 ]