[R-390] BFO Drift?

[Graham Baxter]

Have you considered reinstating the 3TF7 ?

Graham
G8OAD

2008/12/11 Roy Morgan <k1lky at earthlink.net>:
>
> On Dec 11, 2008, at 1:13 PM, ANTHONY CASORSO wrote:
>
>> Thanks Tim. That is an excellent response. I am in fact operating on a low
>> band. I can easily check to see if the symptoms track a specific crystal or
>> if they go away above 8 Mhz.
>
> If I remember  correctly some of the local oscillator crytals operate on two
> frequency bands, and none on three. Some on only one.  The right page in the
> manaul will tell you the facts.
>
> The 17 MC crystal is used only on the 7.00 to 7.99 band and below.
>
> Having another stable receiver handy is very useful for this kind of
> troubleshooting.  A bit of wire slipped into the crystal oscillator tube
> shield or nearby the tube if no shield will let you listen to the LO signal.
>
> Do let us know what you find.
>
> Roy
>
> Roy Morgan
> k1lky at earthlink.net
> 529 Cobb St.
> Groton NY, 13073
>
>
>
>
>
> _____________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/faq.htm
> Post: mailto:R-390 at mailman.qth.net
> Unsubscribe: http://mailman.qth.net/mailman/options/r-390
>