PTO grounding under this link. http://wb4hfn.com/DRAKE/DrakeTechTips.htm
73, Ron WD8SBB --- On Thu, 1/14/10, A Parker <[email protected]> wrote: > From: A Parker <[email protected]> > Subject: Re: [Drakelist] R4B/T4XB strange issue > To: [email protected], [email protected] > Date: Thursday, January 14, 2010, 7:19 PM > Hi Curt, > Try grounding the rcvr PTO shaft better > (it sounded to me like > you're saying it's the rcvr PTO that's the problem). > There's a mod > documented somewhere, probably on Ron's site, that will > show putting a small > length of braid from ground to that "clunky" pc that has > the spring on it. > I know, not a very well described solution, but that's the > best I can do at > the moment. > My/our pal Garey will know where to > point you. Hi Garey, hope it's > warming up for you up there. > 73, > Al Parker, W8UT > New Bern, NC > www.boatanchors.org > www.hammarlund.info > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] > On Behalf Of Curt Nixon > Sent: Thursday, January 14, 2010 6:27 PM > To: [email protected] > Subject: [Drakelist] R4B/T4XB strange issue > > Good Evening Gents: > > Have a newly reworked R4B/T4XB pair that I've been using > for a few days now. > This is the one that I filed stripped the PTO and cleaned > up. > > Anyway, this just started after about twenty hours of on > time. > > With VFO selector in Sep, the Rx injection frequency shifts > at random by > approx 10Hz. ( I have a digital RO on the injection > line so it reads out > the inj freq) Sounds like a mechanical issue but does it > pretty much > continually even with absolutely no vibration or > contact. Now if I switch > to TX it goes away, in Rx, it happens but very > rarely. > > It just pops back and forth--always the same exact amount > of shift and > always returning to the same freq. > > I cannot MAKE it shift with any sort of tapping or jiggling > of switches or > controls. > > Any ideas?? > > Thanks > > Curt > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist > _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
