Looks like the front panel is about finished and turning my attention to the knobs, escutcheon, and meter covers.
When I first removed the two large knobs a couple of years ago, I could tell one of the clamp screws did not have the same spline-drive as the other one as the socket was slightly larger than the other one. I thought someone had replaced the spline-drive with a hex-drive but yesterday, I discovered that it is a larger spline socket. Both are six-spline versions but one is a 0.096" (Xcelite 99-66) and the other is a 0.111" (Xcelite 0.111"). >From what I can tell, they're both #4-40 screws but one is just a few thousandths larger in diameter (not large enough to be a #5 and possibly just manufacturing tolerance differences). Also, one knob has the two ribs in it and the other doesn't. I didn't track which one had which screw in it and I don't think that really matters. Most likely, somewhere in a repair depot, a knob was installed from a radio from a different manufacturer. I'd like for these both to have the same Bristol drive (the 99-66 0.096" version) so as to match the screws from all the other knobs. Anyone know where I could get a proper socket-head screw for this? I know these are pretty rare and likely the only place I'd find that is from another clamp/knob/radio but thought I'd ask. Thanks, Barry - N4BUQ ______________________________________________________________ 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
