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#bitx40 #bitx40

 

Hello everyone, I'd already assembly my bitx40, but my receive system didn't show any sound at all.?

I've already make a measurements on the transistor voltage.. The only sound I've heard is a quirk sound, like bird sound when the PTT is pressed. And "zzzz" sound in the speaker. What could go wrong?

Please need your help

Thank you so much

Book1.pdf
Book1.pdf

Mike aka KC2WVB
 

I would carefully check that the volume potentiometer is wired correctly but I suspect it is the wiring to the headphone jack/receptor that is at issue.?

The ground for the headphone jack/receptor, can't remember its color but think it's black, is soldered to the pin out closest to the surface that the jack/receptor is mounted to. The audio line that carries presumably the ac audio without dc offset connects to both the ring and tip connections on the jack/receptor. I believe the audio wire is brown.

If you look at a typical stereo jack/plug the tip is the furthest section from the wire/cable, the ring is the middle section and the shaft is closest to the wire/cable. This jack/plug itself is a bit confusing unless you insert a TRS plug aka 1/8 stereo jack/plug into the jack/receptor and use a continuity test to see which of the remaining pins are the one's needed.

I am guessing but it sounds to me like you either grounded the audio line or have the wrong pin out associated with the jack/receptor.

I don't think I'd try the microphone until you get the receive audio straightened out. Can't really see the harm in it but why tempt chance.

Best wishes

On Fri, May 25, 2018, 11:24 AM <qonita.salimah@...> wrote:

Hello everyone, I'd already assembly my bitx40, but my receive system didn't show any sound at all.?

I've already make a measurements on the transistor voltage.. The only sound I've heard is a quirk sound, like bird sound when the PTT is pressed. And "zzzz" sound in the speaker. What could go wrong?

Please need your help

Thank you so much
 

Thank you for your reply..

I'd already double check my connection and wiring to the headphone jack. I also try another speaker, in case the problem is within the speaker. But the thing that happened is the system didn't show any sound at all.?

Thank you very much
 

Did the potentiometer also affecting?
 

RoughTranslation:

Hello,
I need the raduino program for bitx40, I had to change it for a new one.


On Sun, Jun 17, 2018, 2:04 PM <victor.rodrigo.jimenez@...> wrote:
hola,?
estimados necesito el programa del raduaido para el bitx40, lo tuve que cambiar por uno nuevo?

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