[R-390] bottom 200 kc dead

[Tarheel6@msn.com]

John,
Check the mixer rack and slugs to the right, rear of the rf deck.   Usually
when something like you experienced happens to me, I find that the rack is
sticking.  It may be a subtle binding, so look very carefully at whether the
rack is moving through its entire range.
73's,
-tom


----- Original Message -----
From: John Page <k4kwm@hotmail.com>
To: <r-390@mailman.qth.net>
Sent: Tuesday, July 29, 2003 10:00 PM
Subject: [R-390] bottom 200 kc dead


>      My Collins R390A just suddenly developed an odd ,to me, problem. It
> suddenly decided it would not receive anything from X.200kc down. This on
> ALL bands. Really didnt have a clue as where to start as signals from
200kc
> up were great. It was as though you flipped a switch when you tuned below
> 200kc on any band. I did check all tubes. Just to try something. All
checked
> good. Thought a cam had slipped so I compared it with my stewart Warner
> which works great. All seemed ok.
>      Had a occasion to be talking to Jim Garland W8ZR this evening and he
> thought I should check out the PTO. Jim knows his stuff so I went home and
> decided the easiest check was a new PTO tube.
>      WOW it works. Old tube still checks good and returning it to the PTO
> brings back the problem So Thanks Jim, you fixed it. Not sure why that
> happens but at this point, who cares.
>      Just wanted to share this with the group. Might be some newbys to
390's
> like me on here.
>                             John
>
>
>
>
> John Page K4KWM
> Hollow State since 1953
> (ex W8PKU,N8BLB,NA8O)
>
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