[Elecraft] KX3 Low Band Noise 20M?

[Mark Raybould]

Hi Everyone,



I have recently noticed that 20M exhibits much lower band noise and signal
strength (CW Mode) as compared to 30M, 40M & 80M.

S/N 01298F, MCU 1.87, DSP1.28, ATU in or out no change, Pre-Amp set to 20db
all bands, AF set to 15, PS 13.7v.  No software tweaks, KX3 as it left the
Factory except for utility updates.



Measurements with an XG2 at 50 microV,

20M S6

40M S9 as expected

80M S9 as expected



Any ideas why 20M is noticeably lower?  Many thanks for your help.



73. Mark

G3XYS/NS1Q

MacBook Pro
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