Getting on 160 Meters on a Budget - eHam.net
2009年3月26日 · Of course adding radials will improve the performance. Cebik provides modeling data for a 160M vertical with 4, 16 and 64 quarter-wave radials. Quarter-wave 160M vertical 4 …
10-Meter Dipole with 5 Db Gain - eHam.net
When bent, think of it as a quarter-wave monopole with one radial at various angles. It can be configured at ~75 degrees for general purpose as a slightly directional quarter-wave vertical …
A Simple Pull-Up Mono-Band Vertical Dipole Antenna Design / …
ZL4AI 2021-05-16; A Simple Pull-Up Mono-Band Vertical Dipole Antenna Design / 4NEC2 Tutorial; This is a very interesting article and you have developed a high performance vertical …
ARRL EFHW 40m, 20m, 15m and 10m antenna kit, made by HFkits
2020年10月15日 · ARRL has partnered with HF Kits to bring you this easy-to-build four-band antenna kit: an end-fed half-wave (EFHW) antenna. Unlike the dipole antenna, which is …
The 20-Meter J-Pole - eHam.net
The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. THEORY …
Covid-19 Dual Band 2m/70cm Antenna Build - eHam.net
2020年6月24日 · The antenna arrived at is shown below, and looks very similar to a standard 2m quarter wave ground plane except radial and radiator lengths and radial angle. However, the …
Reviews For: Alpha Delta DX-A - eHam.net
160-80-40 Meter 1/4-wave Twin Sloper - A top low frequency DX antenna. Combines the tremendous DX firepower of the 1/4-wave sloper with the wide bandwidth of the 1/2-wave …
160 Meter Longwire for Limited Spaces - eHam.net
Pete--Thanks for posting this antenna idea. I use an inverted L antenna for 160, fed with good coax about 60' long to an RF choke at the base; my 1/4 wave antenna is only 40' high sloping …
Angle of Radiation - What is it? - eHam.net
This antenna rocked compared to the delta loop at sixty feet. In A/B tests within 300 miles, the cloudwarmer was generally 5-10db louder, of course unscientific. If ya wanna kick butt up for …
Antennas for QRP - eHam.net
K4UUG 2007-01-03; Antennas for QRP; The most efficient antenna that I use is one dipole that is cut for the freq I am operating on.I ran the HF MARS net here for 6 months with a 5 watt …
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