Ranger RCI 2995 DX White Noise on SSB

[DTB Radio]

I may have missed this in other replies, but one of the fixes for this issue with the RCI DX (SMT) radios was to remove the SSB IF filter and cut the traces under it that went to the lands for the bypass cap completely off the board, then re-install that filter and re-tune the receiver. I've done that in many of those SMT RCI's and its always helped with the white noise issue. Seems like those traces allow the receiver to pick up stray chassis garbage even if they're not in use.

 

[DTB Radio]

I've decided to set this one aside for now, it is kicking my butt. I took a working 29 and swapped out piece by piece every part in that circuit, and ever individual part checked good in the working radio, including the 7310. Even did a PLL chip swap, and that checked good. Checked continuity on all traces in that circuit, all check good. I did learn that on the newer 29 chassis the bias level on pin 6 of the 7310 IS actually around 5-6 volts, so what I thought was a clue is just normal. I'll go back to it at a later date if I don't just part it out...

 

[W4KVW]

Hello, Anyone here have a suggestion how to lower the white noise on ssb on a 2995 DX? I have a 2008 model, great radio and talks great to. But the white noise on SSB both upper and lower is terrible. Very hissy sounding and I'm looking for the hollow ssb sound like my Cobra 2000 has. Turning down the RF gain doesn't do anything to fix this issue. Is there just a simple trimmer adjustment or does the crystal filter need to be changed out to something different. Thanks in advance.

Mike

I use the ClearSpeech DSP base modules & their external speakers on every radio I use on SSB. They Kill white noise as well & many other noises. I have some High Tech Amateur Radios such as the ICOM 775DSP, ICOM 7610, ICOM 9100, & ICOM 7000 & all of them are far better with the ClearSpeech units. I HATE noise & I have very little on any of them now. It does not matter if it's a High Dollar HF radio or a CB Radio they work Great on all of them.

 

[gamegetter]

hopefully the West Mountain Radio Noise Reduction Processor CLR-DSP comes back in production soon.