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A Modified Petlowany Antenna


It is essentially a very short dipole with spiral-wound coils at each end. Each coil contains a quarter wavelength of wire at the desired antenna frequency
post 28 Jan 2024
A Modified Petlowany Antenna

Antenna Vertical Links

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My big vertical antenna project
The antenna project, specifically a DX-Engineering, Model DXE-MBVE-1, 43 foot mono pole vertical antenna

Progetto antenna verticale 10-20-40
Nel nostro caso uno stilo di poco piu' di 9,5 metri con un adattatore di impedenza alla base,puo' funzionare su tutte le bande HF dai 10 agli 80mt

Phasing short hf vertical antennas
The initial 40 meter phased array consists of two 10 foot high elements spaced one-half wave length apart


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