geowhitt
Member
Hi all i am looking for a squelch potentiometer for my BCT15X if anyone has one.
Thanks.
Thanks.
Hi all i am looking for a squelch potentiometer for my BCT15X if anyone has one.
Thanks.
Hi all i am looking for a squelch potentiometer for my BCT15X if anyone has one.
Thanks.
What's the exact problem with it? Nothing happens when you turn it down and doesn't open up the audio? Or is it just the plastic knob that are broken?Hi all i am looking for a squelch potentiometer for my BCT15X if anyone has one.Thanks.
Then it's nothing wrong with the pot.when i turn the knob the screen shows the numbers going up and down when turning the knob.
If the SQ knob makes the values on the display step both up and down in value then the SQ pot is fully working and has no problem. Instead it is a component failure on the circuit board if you get noise and the audio doesn't mute when the SQ it set to its highest value.Yes just static.The squelch is open and will not close when turning the pot from 1 to 20 just noise.
Yes just static.
The squelch is open and will not close when turning the pot from 1 to 20 just noise.
I've wished I still had my scope a few times but, due to health problems and eye sight I had to give up my electronics repairs/hobbies!If the SQ knob makes the values on the display step both up and down in value then the SQ pot is fully working and has no problem. Instead it is a component failure on the circuit board if you get noise and the audio doesn't mute when the SQ it set to its highest value.
Either the noise level are not enough to activate the squelch, could be a crystal filter that are broken, or the SQ circuit doesn't decode the noise properly, could be a capacitor that's gone bad.
You probably need an oscillioscope to be able to pinpoint the exact component that needs to be replaced. The schematics that are on the web are not complete but there's a test point on the circuit board called "noise" which is a DC voltage you can measure with a digitial voltmeter. It should probably be something like 3 volt when there's no carrier and go to 0 volt when you listen to a carrier, like a FM broadcast station.
/Ubbe