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Love those green rigs!

Yeah, I saw a post about this and realized I've corrected this in a bunch of old Heathkit HW-101 rigs over the years. Sounds like an agc problem, but the bfo energy should be 3-5 times that of the I.F. level in the detector. A lot of HW-101's will be more like 1:1, and it makes SSB sound...

I pilled q36, man what a difference!! Much smoother and easier to listen to when spinning the vfo. Also found c89 & c90 backwards from the factory (bfo & if injection ratio)...SSB was kinda "irony" sounding...now sounds as clean as AM. Thanks for the tip on the mute transistor!

OK, I found it! Remove Q36. Here's the original post... https://www.worldwidedx.com/threads/eliminating-the-channel-muting-in-the-old-rci-ept295013z-chassis.247889/

I originally did this mod sometime back, after a total restoration of a 240D for a friend. I had recapped the rig, and changed all of the out-of-tolerance resistors. A new set of tubes still wouldn't bring the RX up to what I had hoped for, it was hanging around .4uV @ 10dB. Not bad, and I think...

Thanks! I didn't know there was a forum problem, but I've not been real active on here until lately. I saw a mod to overclock the processor for increased scanning speed, wonder if that would help that issue... I think getting rid of the mute would be a nice mod, it's a little annoying for the...

Not sure what it's called, I've been searching with various syntax, but not finding it. I saw a mod somewhere for the RCI 2950 ilk that would stop the "drop out/muting" between channels as you spin the knob. Is anyone familiar with that mod?

Thanks a bunch. I was able to repair the problems on the main board, thanks to this schematic. Trying to track down a problem on the display board, still working on that,

Right on, just checkin' out my rubber duck :-)

Hmmm... yeah...

test

Test

Hushpuppy Jr in Central NC

My dad's was KWE-9443. Wish I could find the original paper.

I posted over on the schematics thread, but thought I'd try it here, too. I'm mostly in need of the schematic for a 2990, but the service manual would be good as well. Thanks in advance for any help. Tweek

Does anyone have a schematic for the 2990? I've searched around the site, but so far, haven't found it. Any help appreciated. Thanks! Tweek

I forgot to list my contact info. Email duke@621cycles.com about this. Thanks.

I've got a Silver Eagle 350 for sale. Hi/Lo, receive preamp. It runs 4ea. - mrf-455 transistors. Good shape, practically never used. $125. Shipping in the USA from here in central NC for $12.50.