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19625RE: TX image supression failure

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  • testromeline
    Feb 19, 2014
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      I have a problem with hardware adjustment for TX Image. After "clean install" of GSDR I cannot set any TX null by trim pot. Tx image appears on display of FTdx-3000 steady 5-10 dB below fundamental signal. What resistance should be between tp3 and tp4 ? I can measure about 2K to 7K (depends on trim pot position). How does it work on a good G11 unit? Is there a voltage point table that I can use for troubleshooting?

      Thank you,

      Oleg Gorelov KF5QCO

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