IMD and supply voltage

[Elecraft mailing list]

Hi Wayne

How about these ham transceivers? I pulled the data  from my saved QST reviews of these radios that I have owned in the past.
I do recall that they did  have transmitter IMD data that was head and shoulders above   what was available when they were released.

This data is from the QST reviews and not my owned measured  data. All these radios operated on a 12 volt supply.

FT990  3rd -38  5th -47  
FT767  3rd -40  5th -45
TS450  3rd -35  5th -49
IC737   3rd -39  5th -48

The higher order data from the QST reviews indicated a rapid fall off above the 5th to the 11th order.
 
Low IMD figures while operating from a 12 volt power supply certainly seems to be realizable.

73
Craig



"If you have another marine radio in mind that you think is using different/better circuitry, please let me know so we can repeat this exercise if necessary.

73,
Wayne
N6KR"

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