[R-390] zero adjust knob

[jwkoest]

Hi guys,Dont know how to post to the group  and I dont want to hijack your  post.I finally got my R725 restored and find I need a tuning knob and the clip or clamp that goes with it. This will finish my restoration. Thanks,Joe  Koester, W4NSASent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: jm <josemic at gmail.com> Date: 5/3/19  11:10  (GMT-05:00) To: R-390 Forum <r-390 at mailman.qth.net> Subject: [R-390] zero adjust knob Hi fellowsI have an annoying problem with the zero adjust knob. When I use thecalibrator of the receiver things are well.The problem arises when I try to zero-beat using a broadcast station with aknown frequency.Loose the knob, zero-beat and when I am tightening the knob I can realisehow the signal measured with the carrier meter begins to decline. The moreI tight the more the needle descends. The final result is a mismatch of 1-2kcs.It is strange for me that the problem occurs only in the AGC o MGC positionand not with the calibrator.Can you help?Thanks and regardsJose IsasaEA8DCP______________________________________________________________R-390 mailing listHome: http://mailman.qth.net/mailman/listinfo/r-390Help: http://mailman.qth.net/mmfaq.htmPost: mailto:R-390 at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html