I have Ten Tec 555 Scout with a frequency display that reads 100 Hz high on all
bands.
Looking at the schematic of the counter logic board, I notice a trimmer cap
(4-20 pf) in parallel with the 4.0 MHz crystal in the microprocessor circuit.
It is labeled C3 on a pictoral of the board.
Is this the control I would adjust to bring the counter readout to the correct
frequency?
If so, could this by accomplished by adjusting it to zero beat while tuned a
known frequency, such as WWV at 10 MHz?
I’m not familiar with logic circuits, so wondering if it’s a simple adjustment
or something that needs to be done by a technician in a well-equipped shop?
Any help would be appreciated.
73, Winston K4CWQ
Sent from my iPhone
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|