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Build for 14 MHz magnetic loop antenna
20 Meter Loop Antenna–it’s such a simple project and requires no special order components. In fact, all of the components save, perhaps, the antenna connector can be purchased at a DIY store
post 01 Jul 2024
Antenna Loop Links →
1.8 a 21 mhz Magnetic loop
For 80 160 connect capacitors accros a & b, use about 390pf
4 meter delta loop
The Delta loop has an impedance of about 100 ohms and to match it we use a quarter wave of 75 ohm coax in series to with the 50 ohm feeder
2m loop full wave antenna
Le caratteristiche piu' interessanti di questa antenna sono, alimentazione diretta in cavo coassiale senza adattatori
14-30 MHz Magnetic Loop Antenna
A high voltage shunt capacitor made from 154 cm 60.5 inches of RG-58/U coaxial cable approximately 150 pF
Two-monoband-magnetic-loop-antennas
The loop for the 21-28 Mhz bands is soldered the ends of the heliax to the butterfly capacitor and to a piece of RG-58 coax
156
For 80 160 connect capacitors accros a & b, use about 390pf
The Delta loop has an impedance of about 100 ohms and to match it we use a quarter wave of 75 ohm coax in series to with the 50 ohm feeder
Le caratteristiche piu' interessanti di questa antenna sono, alimentazione diretta in cavo coassiale senza adattatori
A high voltage shunt capacitor made from 154 cm 60.5 inches of RG-58/U coaxial cable approximately 150 pF
The loop for the 21-28 Mhz bands is soldered the ends of the heliax to the butterfly capacitor and to a piece of RG-58 coax
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