[Elecraft] TX IMD

Julian, G4ILO julian.g4ilo at gmail.com
Mon Jan 26 13:19:55 EST 2009




Gregory Fischer wrote:
> 
> Not doubting your TX IMD report in PSK.  But I typically see ~-32dB IMD
> when 
> checking PSK at 50W. 
> 
You are probably right to doubt it. Such a difference made me try a test
again, on a different band. I got a different set of results. Probably it is
better to use a dummy load when testing the TX. The IMD Meter is designed to
be used off-air (hence when TXing into an antenna) but it would appear that
other factors can affect the readings. This needs further investigation.

-----
Julian, G4ILO. K2 #392  K3 #222.
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