Poor IMD with PSK31 using DM780

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  • Updated 2 weeks ago
My setup is Flex 6400M with Ham Radio Deluxe/DM780.  It works great excepting that I am getting poor IMD with PSK31.  I am only running 24 watts.  Is there a setting somewhere that I can tweak to get better IMD?  de Roger W6VZV
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Roger J. Buffington

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Posted 2 weeks ago

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Roger J. Buffington

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OK found it.  Adjusted the DAX gain to about 70% instead of 100% and my PSK31 is perfect -- -34 on the IMD Meter.  73 de W6VZV
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Michael Coslo

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With those numbers you should be able to see the lacey psk signals when you expand the psk31 window to full. Doesn't mean much, other than indicitive of a great signal,  but very pretty to look at. 
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Larry - W8LLL

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If you keep your DAX TX gain set to just under Zero DB and yellow on the SmartSDR level meter you will be good. You will be able to get your full 100 watts and a clean signal this way if you need it.


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