Help troubleshoot no TX
My BitX has never really been able to show much of a jump in current when performing the loud HELLO test. With my fiddling, I can now not get any current increase when talking, so may have damaged something.
I will describe my testing methodology here, in the hope that the community can guide me to the next steps of troubleshooting.
My time zone is GMT +10, and happy to arrange an EchoLink sched if that will be an easier way to diagnose.
P.S. If anyone knows where there is a text searchable copy of the schematic and board layout, that would greatly help finding components to diagnose.
Signal into the microphone input should be more like 50 to 100 mv.toggle quoted messageShow quoted text
You might look over this post, especially the first link: https://groups.io/g/BITX20/message/23640
On Fri, Jul 28, 2017 at 10:27 pm, Lance Conry wrote:
I have my computer generating a 400 Hz sine wave with a 4 mV swing. (I came to these input settings as they match the readings I got at the mic input (MIC1) when offering a loud "HELLO" into the mic).