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50MHz to 28MHz RX Converter
The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal
post 01 Sep 2024
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Variometer Loading Coils for LP AM operation
LPAM antennas are more difficult to construct than their LPFM cousins. Firstly, they have to be longer. Secondly, they have to be vertical to work well which becomes an issue if the antenna is longer) Thirdly, they need to have rather long ground radials for the same reason
Voice Keyer vacile da usare e da costruire
Decisi quindi di costruirne uno semplice
Yaesu FT-817 abilitazione alla trasmissione continua
Puo' essere modificata per abilitarla a trasmettere sull'intero spettro delle HF
The Skew-Planar Wheel Antenna
This antenna, constructed by VE3BYT, was built for the beacon VE3WCC on 903.370 MHz in Ottawa, Canada
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LPAM antennas are more difficult to construct than their LPFM cousins. Firstly, they have to be longer. Secondly, they have to be vertical to work well which becomes an issue if the antenna is longer) Thirdly, they need to have rather long ground radials for the same reason
Decisi quindi di costruirne uno semplice
Puo' essere modificata per abilitarla a trasmettere sull'intero spettro delle HF
This antenna, constructed by VE3BYT, was built for the beacon VE3WCC on 903.370 MHz in Ottawa, Canada