[TenTec] Issues aligning Omni 6+ (Mod. 564) FM TX carrier frequency
sven at ladegast.net
Tue Nov 6 10:04:51 EST 2018
I do have trouble aligning the TX carrier frequency on an Omni 6+.
With no modulation applied, the TX carrier frequency shall be 9.00300
MHz measured at connector 73 of the board. I used a TMP-BNC cable and
connected it to connector 73 and connected the BNC connector to my
accurate frequency counter using a T-connector and additional 50 Ohms
The TX carrier frequency is aligned by turning the core of L2 but with
the core complete turned out of the coil I get a maximum frequency of
8.9965 MHz and cannot get to 9.00300 MHz. Do have anyone an idea what is
going wrong? Aged XTAL?
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