Web20 metre delta loop HF antenna; Vertical HF whip antenna for 20 or 40 metres; 10/20 metre Yagi in the attic; 40 metre loaded dipole; Multi-band Inverted L antenna; Make a rotating VHF/UHF HAM SAT antenna array; … Web9 dec. 2024 · December 09, 2024. Helically Wound Multiband Vertical Antenna - Portable in Poland. Walt (K4OGO) came up with this helically wound vertical antenna while he …
High Performance 40 Meters Vertical Without Radials - W6NBC
WebA top-loaded, helically-wound vertical antenna is described having an upright non-conductive core with a conductive element extending from a base upward alongside the … Web70cm Helical. Please note that this is an experimental omni-directional antenna for 70cm which has both horizontal and vertical gain, which is now in use with the Southampton … bkk bitmarck service gmbh
Wideband Dipole Antenna for 80m - Ham Radio . Magnum …
Web40 meter wire: From the center conductor of the SO-239 wire to D, H, then over to the mast above where the spreaders are attached to the mast and wind your helical coil on the … WebA hamstick on 40 meters, if you do everything right, is going to have an efficiency of around 10-15%. You put 100 watts into it, and it'll radiate about 10 to 15 watts. The rest just heats up the antenna and coax. WebHe suggested experimenting with a helically wound vertical. Chris recalls a team event last year where they needed to get on 40m fast so a fishing pole and about 10 meters of wire were produced along with 2 elevated … bkk bergisch land bonusheft