Multiband Transmitting BPF Project
After installing a couple of wire antennas in the trees we discovered that when one of us was transmitting the other couldn't receive anything but interference. I later learned that simultaneous operation of two radio transmitters in close proximity on separate bands will overload and desensitize the radio's receivers. A bandpass filter for each radio can be used to reduce this problem but the filter must be able to withstand the transmitter's power
post 01 Jan 2022
Projects_Homebrew Links →
Tranistorized Dip Meter, YB0AH
This dip meters use 2SC2369 transistor for RF Oscillator and 2SC458 for AM Tone Oscillator
Trasmettitore ATV 250 mW
TX ATV per i 23 cm con output regolabile da 100 a 250mW
Un Decoder CW con il microprocessore PIC16F84
Un semplice decoder CW che utilizza il microprocessore PIC16F84 con un displayLCD da 2 righe x 16 caratteri
Using Delta Matching on HF Beams
There are a number of advantages to a Delta match feed system and these outweigh any disadvantages
Filtro Passa Basso anti TVI per HF
Adottare l'installazione di un filtro passa basso all'uscita della catena trasmittente
170
This dip meters use 2SC2369 transistor for RF Oscillator and 2SC458 for AM Tone Oscillator
TX ATV per i 23 cm con output regolabile da 100 a 250mW
Un semplice decoder CW che utilizza il microprocessore PIC16F84 con un displayLCD da 2 righe x 16 caratteri
There are a number of advantages to a Delta match feed system and these outweigh any disadvantages
Adottare l'installazione di un filtro passa basso all'uscita della catena trasmittente
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