[Elecraft] [K3] XV144 fault (offset problem?)

[Roger de Valle]

Doug

The crystals originally supplied by Elecraft for the 2m Transverter were 
stamped 116.010000Mhz so they were always going to be problematic and 
off frequency. The ones they replaced the originals with were also 
116.010000MHz and I really don't know why they were sent unless it was a 
mistake. maybe some one from Elecraft could comment.
  Given the distance you are off frequency I would suggest you have 
similar crystals, by memory there was not offset adjustment available to 
correct for the frequency error. Ireplaced them with a locally sourced 
crystal of 116.00000Mhz and the transverter came up right on frequency.

Regards.

Roger VK3ADE

On 30/12/2010 20:58, GM0ELP wrote:
> Hi Roger,
> Many thanks for the response, it certainly is very frustrating. I have the
> Crystal Oven option installed, so would have to take things apart to see the
> crystal markings.
>
> In the manual it says:
> Y1 Crystal, 116 MHz 5th Overtone Series Resonant (116.000)
>
> Did the ones Elecraft sent you have (116.000) stamped on them? (144MHz input
> = 116MHz LO + 28MHz IF)
>
> Was it the accuracy of the Elecraft crystal parts that was questionable, or
> were the markings/parts wrong?
>
> Hopefully Elecraft will check their crystals for the XV144 and comment
> before I need to start taking things apart.
>
>
> Doug GM0ELP
>
>


-- 
Roger de Valle
Genette Pty Ltd
03 5330 3081
0407 320 121