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Old kc901h-factory calibration missing

By Igor •  2017-11-26 17:32:41 •  73 clicks
Hello! I've successfully used kc901h in my hobby for two years. But recently, a malfunction occurred-the factory calibration was lost. Only user sizing is working, but it is very uncomfortable in this mode ... How do I restore my factory calibration? Please help me. I'll be very grateful.


3 Reply | until2017-12-19 00:23Add a reply
    VK3NH  10 days ago#1 -Reply

    Genuine post

    qlc  12 days ago#2 -Reply

    I've got the same issue recently. Both is S11 and S21 modes.
    What is the "source" output amplifier transistor type? Looks like it is out of work.

    VK3NH  21 days ago#3 -Reply


    This comment should put your question back to the top of the list above the rubbish
    cheers Noel


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