Hits
Homebrew Vertical Antenna 7 MHz
A major problem to overcome when using vertical antennas is ground losses. To put it simply, the Earth loves to absorb Radio Frequency energy especially in the near field close to an antenna
post 10 Apr 2024
Antenna Vertical Links →
My 160 meter antenna is an Inverted L
My 160 meter antenna is an Inverted L. The length of wire required at 1.835 MHz is approximately 127 feet
Multiband wire vertical
When 3 bands are used a center pole and 2 wires on the sides are used. The center wire will always be the lowest band and to the sides the other two or four bands
Multiband vertical HF antenna
The antennas may be installed at height near one meter above the ground. Resonance counterpoises should be used at this placement
New Shortened Vertical for 17-20-30-40 Meters
a 4-band, 20' vertical half wave that uses two loading coils with taps. The results appear promising
Shortened 160 meter vertical
Highly effective for 160-meter DX and local work, easy to build and adjust, very economical
184
My 160 meter antenna is an Inverted L. The length of wire required at 1.835 MHz is approximately 127 feet
When 3 bands are used a center pole and 2 wires on the sides are used. The center wire will always be the lowest band and to the sides the other two or four bands
The antennas may be installed at height near one meter above the ground. Resonance counterpoises should be used at this placement
a 4-band, 20' vertical half wave that uses two loading coils with taps. The results appear promising
Highly effective for 160-meter DX and local work, easy to build and adjust, very economical
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
Voice Recorder Gestito dall'integrato in questione ed offre la possibilità di registrare più messaggi per una durata massima di un minuto con buona fedeltà di riproduzione