ho provato ad alimentarlo con due alimentatori stabilizzati uno da 12V 2A e l' altro 12V 5A lineare e non cambia nulla!
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Poi mi sono accorto che sia con l' antenna attaccata che senza antenna non riceve nulla!?
Grazie
Sergio
Da:[email protected] <[email protected]> per conto di Jose Silva <ad2p04@...> Inviato: martedì 17 aprile 2018 13:41 A:[email protected] Oggetto: Re: [BITX20] Help me! annoying ticking in the audio #bitx40help
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Ciao a tutti,
Buongiorno Sergio, vicino alla tua radio c'è qualche TV collegata, un caricabatterie per cellulare o una recinzione elettrica? Le tue fonti sono con o senza trasformatore? Questa interferenza mi sembra un apparato che ho citato.
Buona fortuna e buon divertimento.
Saulo Belo
PY7EG
2018-04-17 4:05 GMT-03:00 SaMa photo SaMa photo
<infosamaphoto@...>:
it's maybe the first thing I did! I tried to feed it with two different stabilized power supplies! 12V 2A and 12V 5A but does not change anything!
Tested with antenna and without antenna but does not change anything! I also realized that he receives nothing! The antenna to try was just a piece of wire, just to try the reception!
If I disconnect the bipolar raduino plug, the noise disappears! If I disconnect the three-pole potentiometer plug, the noise remains.
Have you made sure that the interference is coming from inside
the BITX and not from some external source?? Moving the BITX
to another location or using a battery power source could help
determine if the problem is internal or external.
Removing the antenna connection and shorting the antenna terminals
can help to determine if the clicks are internal or external.? Just be
sure that you do not attempt to transmit while the antenna is shorted.
Static build up on the antenna can cause clicks as the charge is
discharged by arcing.? A 47K ohm resister across the antenna
terminals can bleed off static build up without interfering with antenna
impedance, if this is the problem.
