👍 Sent from my iPhone > On Oct 7, 2025, at 23:20, Jim Whartenby via R-390 <[email protected]> > wrote: > > For the life of me, I don't understand why people grease the R-390 > geartrain. The manual even says that it is better to not grease then to over > grease. The group that knows the most about gear works, in general, are the > clock collectors. Their advise is to sparingly oil pivot points and do > nothing to the gear teeth. It will only collect dust and gum up the works, > if you do. As for the R-390 or is it an R-390A? First, test all tubes, > IRAN, second reseat all connectors, then test again. > Regards, > Jim > > Logic: Method used to arrive at the wrong conclusion, with confidence. Murphy > > On Tuesday, October 7, 2025 at 03:56:50 PM CDT, Adam Morehouse > <[email protected]> wrote: > > Hey guys, > > I appreciate the pointers on my R-392, and now that it's buttoned up, it's > time to work on my R-390. I only tested this briefly when I first got it, > today I threw it up on the bench. Supposedly this was restored by Rick > Mish, it is very clean (except the gear train, which has a lot of fresh > grease...), and the front panel is pristine. > > It does pull stations, but the volume is extremely low in AGC mode, and > gets slightly louder when placed into MGC. > > In MGC, with the BFO switched on, it plays at a normal (not super loud, but > loud) volume. > In AGC, with the BFO switched on, it hums, low volume audio. > > The limiter seems to have no effect, and varying the BFO doesn't do > anything at all no matter AGC/MGC. > > I have Tom's solid state kit installed, and B+ at the AF deck test point is > a steady 180.5vdc. > > I am going to dig out the TM's later on, I have them somewhere...but maybe > somebody here can help point me in the right direction. > > Thanks! > > Adam K2AAM > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected]
This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
