[Boatanchors] backwards tuning

[J Forster]

The LO may be WAAAAAY offf and the thing is running as a subheterodyne rather
than a superheterodyne.

FWIW,
-John



Gerry Steffens wrote:

> 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
>
> _______________________________________________