Softrock RXTX Ensemble problem
- Hi all,Everything was going along fine, I've been listening to the RX section of my SR RXTX for two days now, and it sounds great, but today I finished the TX-Opamps and the TX-mixer stages and thought before I move on with the PA stage, I would listen to the RX again. The minute I turn everything on I have this horrendous buzzing sound and the spectrum looks like this. I have double and triple checked everything and I just don't know were to go from here. BTW, all the voltages that I could check were all spot on. the current draw is right on. Any ideas what's going on?JoelKB6QVI
I would check pins 1 and 15 of U8 and make sure they are high while receiving.
In looking at what you would have added to the board in the TX Op Amp and Mixer stages, this is the only thing I can see that might, and I emphasize might, cause interference to the receiver. If these pins are somehow low then the transmit mixer is enabled and it could conceivably cause a problem.
A fairly low probability but worth the time to check I think.