[Boatanchors] backwards tuning
Gary Schafer
garyschafer at comcast.net
Fri Mar 7 00:24:12 EST 2008
It probably has a tuning capacitor that has no stops on it and it is
rotating fully around. In other words the dial is 180 degrees out from the
capacitor.
73
Gary K4FMX
> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
> bounces at mailman.qth.net] On Behalf Of Gerry Steffens
> Sent: Thursday, March 06, 2008 11:50 PM
> To: boatanchors at mailman.qth.net
> Cc: Randy Anderton
> Subject: [Boatanchors] backwards tuning
>
>
> Anchorites,
>
> A Motorola radio (AM & SW) belonging to a friend has come my way for
> repair
> - fix "Grandpa's radio".
>
> It has sensitivity and a couple of other problems but this one documented
> below is new to me.
>
> As best as can be determined the dial appears strung correctly (no data in
> Riders on dial stringing) but it tunes backwards.
>
> The dial pointer moves in what appears to be the proper direction - the
> same
> direction as the knob is turned but the local stations at 1270, 1340 and
> 1520 are received in reverse order. Needless to say the dial is way off
> for
> all.
>
> Have I had a mental lapse? At the moment I can think of no electrical
> problem that would cause reverse tuning. Having the oscillator on the
> wrong
> side of the received station can cause the dial to be way off but not
> reversed.
>
> So, am I missing something or what.
>
> Gerry
>
>
>
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