Question about Kenwood -TK2100-2140-2160-2200-3100-3130-3131-3140-3160-3200-260-270-272-360-370-372-373 Comp... 2-Way Radio
The receiver has undergone some servicing, due to PLL disengagement. This solved therev appears a new problem. When the USB is correct on the audio pitch the LSB is not. Where's the problem and how to solve this?
It is perplexing that only the alignment of the lower side band would be affected by the PLL repair/replacement. The output of the PLL/VCO is common to both the USB and LSB and the problem would be on both. In any case, what perhaps is required is alignment (internal tuning) of the LSB side. However, often, there would be multiple steps in performing said alignment (and in some cases, need for an RF with/and an audio signal generator). Having said that, perhaps your best bet would be to make use of the detailed procedures as outlined in a service manual. Unfortunately, they are not as readily available as user's manual (freeware). Some available (for a fee) may be found here, here, here or here. Pls confirm with the possible source contents to include detailed alignment procedure.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
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Posted on Jun 09, 2008
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Posted on Jan 02, 2017
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