[R-390] Non-A alignment question

[Joe Foley]

I concur, Doctor.

Sounds like the need for a mechanical alignment.

Joe




--- On Wed, 2/23/11, Shoppa, Tim <tshoppa at wmata.com> wrote:

> From: Shoppa, Tim <tshoppa at wmata.com>
> Subject: Re: [R-390] Non-A alignment question
> To: "Paul Staupe" <pstaupe at qwest.net>, "r-390 at mailman.qth.net" <r-390 at mailman.qth.net>
> Date: Wednesday, February 23, 2011, 11:13 AM
> Severely out-of-whack PTO, as in
> broken wire or cracked capacitor or maybe just a loose shaft
> clamp between main tuning knob/Oldham coupler/PTO?
> 
> The original R-390 docs don't reference a frequency counter
> because that was only a gleam in anyone's eye at the time,
> but it's a very handy tool for 2011 :-).
> 
> -----Original Message-----
> From: r-390-bounces at mailman.qth.net
> [mailto:r-390-bounces at mailman.qth.net]
> On Behalf Of Paul Staupe
> Sent: Wednesday, February 23, 2011 11:05 AM
> To: r-390 at mailman.qth.net
> Subject: [R-390] Non-A alignment question
> 
> I recently got a R-390/URR (non-A) that was working
> properly when it was put
> in storage about 20 years ago.  When I received it,
> there was audio hiss,
> but no stations received.  I tried tuning it up using
> the manual with my
> URM-25D and a VTVM on the diode load to no avail.  I
> finally gave up and
> tried to peak a 1500 kc signal directly to the unbalanced
> input.  What I got
> was a band of BCB stations that was received about 630 kc
> higher than
> indicated on the Veeder Root counter... eg. WHO, Des Moines
> at 1040 would be
> received at 1670 kc, WLOL on 1330 would be at 1975 etc...
> 
> Does anybody have any suggestions as to what this could
> be?
> 
> Thanks,
> 
> Paul W0AD
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