WebThe lower gain of a wire antenna vs a beam antenna on the upper bands is offset using a 800 watt PEP amplifier. And, of course the extra power of an amplifier on 80 & 40 meters performs well like any di-pole type antenna. ... I read an article in QST about Myantennas 8010 EFHW antenna, pondered the idea of purchasing one. I purchased the ... WebMFJ 80-10 M, 30 Watt End Fed Antenna FULL HF Coverage, no tuner needed on most frequencies. No long counterpoise, radials or feedline required. Rugged weather-resistant 50-Ohm matching network. Fast …
END FED 20 Meter Half wave Antenna - KB6NU
http://infotechcomms.co.uk/downloads/Multi_band_EFHW.pdf http://www.gnarc.org/wp-content/uploads/The-End-Fed-Half-Wave-Antenna.pdf rearm 2019 server
Building and Understanding Your Multiband End-Fed Half …
WebFeb 24, 2024 · Its fairly easy to use an ATU on an end fed antenna to get other bands, especially ones higher in frequency. But the antenna will lobe and change its orientation of the peak gain-- in azimuth. And you have to be careful to additionally choke the coax so it doesn;t radiate. K3FHP, AB6Z, WB8SCT and 7 others like this. WebThe antenna impedance matching components (BOX “Z” above) to match the antenna impedance to the coax line impedance (usually 50 ohms). For non-resonant end fed antennas, the typical feed point impedance is 300 to 600 ohms and a 9:1 impedance transformer (e.g. 450 ohm average antenna impedance to 50 ohm coax, also know as a … WebOct 18, 2024 · The length of a half wave antenna is calculated using the following formula: L (ft) = 468 / f (freq in mhz). The end fed half wave antenna presents a large impedance to your rig, so this impedance must be stepped down to a more useful impedance that is closer to 50 ohms. Most radios today expect to see an antenna with an impedance of 50 ohms … rear macpherson strut