[Elecraft] K3 - KRX3/Main receiver isolation

[GW0ETF]

Just curious.......

Anyone know any numbers describing signal isolation between the 2 receivers?
Playing with Spectrogram indicates -70dB but can't say how much if any of
that is cross talk in the cable or soundcard (SB Audigy). The signal in the
sub rx channel of LINE OUT is seen and measured when the sub is 'Off'; if
the sub is thereby de-powered and isolated the sigals observed are
presumably due to passive leakage??

Not found anything in manuals/elecraft.com and got bored googling for
channel isolation in the soundcard....

73,

Stewart Rolfe, GW0ETF
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