[Drake] 5645 Kc carrier crystal

[Garey Barrell]

By the way, that crystal is actually 5644.999 kHz.!

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
<http://hr99.home.mindspring.com/R-4C_Servicez/>



Tony Sokol wrote:

> Hi gang,
>    I am starting to gain on my T4X-B problems.  I'm pretty sure I have 
> traced the problem down to the 5645 Kc carrier oscillator crystal 
> having drifted low.  This prevents me from using C2 to center the 
> carrier in the filter passbands and of course no CW at all.  I called 
> International and JAN.  International has the schematic but said there 
> a couple of variables like the loading of the coax at the base of the 
> crystal and some additional components that may effect the loading so 
> there might be a little guess work involved.  Once JAN found out that 
> it was not one of the standard band select crystals, they were not 
> interested.    Soooo...at this point, I think I will have 
> International take a shot at it and if the crystal doesn't make 
> frequency, I can give them the error and they will make another one 
> with the corrected  frequency span.  Worse case scenario is two 
> crystals at $20 each and some time.  Anyone have any more specific 
> information that I can pass on to them?  Maybe even a known good 5645 
> Kc crystal???
>
>     Thanks
>        73
> Tony - W9JXN