Hi Glen, Do you mean the small set screw in the collar on the turn-stop? I haven’t loosened that yet, I have only loosened the set screw on the BFO coupler.
Do I have to loosen the smaller set screw inside the turn stop pictured? -Alex Glenn Little WB4UIV <[email protected]> schrieb am Sa. 31. Jan. 2026 um 10:55: > Did you try loosening the set screw? > There may be another located 90 degrees from the one shown. > > Glenn > WB4UIV > > > On 1/31/2026 10:42 AM, Alex Hopper wrote: > > Hi All, > > I have an R-390 with a microdial on the BFO adjustment knob. I would like > to remove the IF deck from the top of the receiver, which requires removal > of the bandwidth and BFO couplers. The bandwidth shaft easily decouples by > loosening the set screw around the “collar” the fits over the shaft. Under > normal circumstances the same would be true for the BFO adjustment as well, > however the addtion of the microdial seems to include another device (the > turn stops?) that prevent me from removing the coupling collar easily. > > How can I go about safely removing this? I have in included some photos. > > Thank you! > -Alex > > > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] <[email protected]> > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > -- > ----------------------------------------------------------------------- > Glenn Little ARRL Technical Specialist QCWA LM 28417 > Amateur Callsign: WB4UIV [email protected] AMSAT LM 2178 > QTH: Goose Creek, SC USA (EM92xx) USSVI, FRA, NRA-LM ARRL TAPR > "It is not the class of license that the Amateur holds but the class > of the Amateur that holds the license" > > ______________________________________________________________ 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
