how to make the coil

how to make the coil

Antennas : 40M : 40 meter Dipole Antennas

• Make a Compatct Dipole for 7 MHz - This article demonstrate how to build and mount a 40 meter loaded dipole using basic materials. This antenna reduce the overall length of an HF dipole through the use of loading coils.
  [ Hits: 216 | Votes: 0 | Rating: 0 ]

• Home Brew Loading Coil for AD5X Vertical - How to make a loading coil for the AD5X portable vertical antenna
  [ Hits: 3096 | Votes: 13 | Rating: 7.91 ]
• Loading Coils for 136 kHz - This page starts by showing how to make loading coils for LF, and goes on to describe two of the loading coil assemblies used to resonate the experimental vertical antenna used at GW4ALG.
  [ Hits: 429 | Votes: 1 | Rating: 4 ]

• End-Fed Half-Wave Antenna for 20m 40m 80m - How to Design and Build a Field Expedient End-Fed Half-Wave Antenna for 20m, 40m and 80m. This Shorty 80m EFHW comprises a 49:1 autotransformer (to match the very high impedance at the end of a half-wave wire), a half-wavelength wire for 40m (also a quarter-wavelength for 80m), a loading coil and a short tail wire. The coil and the short tail wire (about 6 feet) make up the other quarter wave on 80m.
  [ Hits: 141 | Votes: 1 | Rating: 4 ]

• Build your own RF-Choke - How to make an effective RF Choke. The coiled coax choke is the easiest to make but also the least effective. This article includes some general guidelines for winding coax chokes on a 10cm PVC pipe using RG-58 or RG-213 coax cable.
  [ Hits: 792 | Votes: 12 | Rating: 7.33 ]