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Portable UHF 4 elements Yagi Antenna


Building this four elements Yagi for 430-440Mhz, to use it this summer in portable operation
post 28 Apr 2024
Portable UHF 4 elements Yagi Antenna

Antenna 6 meter Links

102



High especialy on 70cm
The very popular FM-birds, AO-27 has a difficult downlink with only around 600mW of power. To provide a good downlink signal a beam antenna must be used

Optimized 10-element UHF Yagi Antenna
The elements diameter of the antenna may vary between 5...10mm and the dipole diameter may vary between 8/12mm

Slappe Arnold antenne voor de 6 meter
Slappe Arnold' antenne voor de 6 meter amateur-band 51MHz. Ideale antenne om in uw vakantie QRV te zijn op 6m


23cm Yagi Antenna building

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

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

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