Tomy,
My first guess is that the crystal for 15 meters (on the 4 band board)
has stopped oscillating or has reduced output.
If you have a 'scope or an RF Probe, you can check to see if there is RF
at P1 on the 4 band board pin 4. Select 15 meters when conducting the test.
The 15 meter crystal is located at X1 and should be 29.000 MHz. The
Elecraft part number is E660005
This must be a fundamental mode crystal, many crystals in that frequency
range are 3rd overtone and will not work in this application.
73,
Don W3FPR
On 4/16/2013 11:18 AM, Tomy wrote:
> I just acquired a K1 with the K1-4 filter board in it.
> It transmits fine on 40, 30, 20. But will not transmit on 15 meters.
> Any ideas on where to start.
>
>
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