[Elecraft] High Tx IMD with new K3s/10

[Robert Nobis]

Bill,

Just wondering, how are yu measuring Tx intermods?

73,


Bob Nobis 
n7rjn at nobis.net


> On Feb 24, 2017, at 16:24, Bill Leonard N0CU <billincolo73 at gmail.com> wrote:
> 
> Benny,
> 
> I recently had Elecraft replace a KLPA3A again. They also did the Tx IMD mod
> and an alignment.
> I am now seeing the following 3rd order IMDs:
> 
> 4W   -40 dBc
> 8W   -40 dBc
> 9W   -35 dBc
> 10W -30 dBc
> 12W -20 dBc
> 
> What is also encouraging is that now the higher order IMDs (5, 7 & 9th) stay
> at least 10 dB below the 3rd.
> Some of these were equal or higher than the 3rd last summer when I was
> discussing the problem with Elecraft. Obviously they have made some notable
> improvements since then.
> The two tone envelope still looks more like a square wave at 12W, but this
> radio is spec'd as a 10W transmitter that is clean to -30 dBc, so it appears
> they are now meeting their advertised spec.
> 
> Bill  N0CU
> 
> 
> 
> --
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> Sent from the Elecraft mailing list archive at Nabble.com.
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