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Tenner QRP 10m CW Transceiver
Small experimental CW 500mW transceiver using just 5 transistors
post 10 Mar 2024
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Random wire antenna for shortwave listening
A 9:1 transformer to match the random wire to the 50 ohm feedline
SDR semplice ed economico ricevitore
Ho scelto RX DR2 per la semplicita' del circuito e la facilita' nel reperirei componenti<
Semplice filtro anti tvi
Un semplice filtro per eliminare i disturbi di modo comune captati dal cavo coassiale TV
Simple LC meter
LC meter. This type of meter, especially L meter is hard to find in cheap commercial multimeters
Radioamateur Homebrew electronics
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A 9:1 transformer to match the random wire to the 50 ohm feedline
Ho scelto RX DR2 per la semplicita' del circuito e la facilita' nel reperirei componenti<
Un semplice filtro per eliminare i disturbi di modo comune captati dal cavo coassiale TV
LC meter. This type of meter, especially L meter is hard to find in cheap commercial multimeters
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
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free