JUMA Amateur Radio Forum

HF Works with test connection after D5 to ground.
As found out there is no signal comming from Processor PIN 76 14-18m. No shorts could be discovered from PIN 76 to Ground, checked with a ohm meter.
What are the terms that pin 76 generating the necessary signal?? Thank you!

regards
HB9FND
Alex

Alex,

If the CW keyer is working and TX500 is in TX state the processor pin 76 should be going high/low as keying signal.
Is the CW keyer working?

73 Matti OH7SV

Hej, Problem solved. I cooked the processor, after the replacment parts received the trx is working fine. Thanks for the good support.

regards HB9FND