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Battle creek special 40/80mhz


The Battle Creek Special is a 3-Band-vertical Marconi-antenna for the bands 40 m/80m/160m
post 02 Mar 2024
Battle creek special 40/80mhz

Antenna 40 Meter Links

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Dipolo rotativo per i 40 mt a carico lineare
La lunghezza complessiva puo' essere ridotta fino al 40% della dimensione originale quarto d'onda senza le perdite risultanti dall'utilizzo di una bobina di carico

Electrically short dipole antenna for the 40m band
An antenna whose electrical conductor is much smaller than half the operating wavelength is an electrically short antenna

Multi Band cage Dipole Antenna Project
By efficient we mean an antenna that will radiate 90% or more of the energy output from the transmitter/amplifier, without a tuner

Prototipo di antenna per i 7MHz in 22cm
Prototipo di antenna per i 7MHz di dimensioni maggiori alla precedente, 22cm di diametro

Quad cubical 40 mts
This full size Quad-cubical antenna of an element for the 40 Mts band. It is a very good antenna, both in transmission and reception, it is built with copper wire


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