[K3] Strange S meter behaviour

[Richard Squire - HB9ANM]

I calibrated the S meters on all my friends' and my own K3's with the
XG2. All display S9 at 50 uV and S2-3 at 1 uV, which is normal.

On one of them, however, signals up to S9+20 dB seem reasonable, but
above that, the S meter goes to hardly believable +50/+60 dB, for rather
unrealistic reports... (50 mV at the antenna, from stations hundreds of
miles away??)

This happens mainly on the low bands 160/80 meters.

Has anyone encountered this kind of issue?

73 de Richard - HB9ANM

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[ab2tc]

Hi,

Is the K3 with the crazy S-meter really old and without the HAGC modification? If so, doing the HAGC modification will improve this but in my case did not fix it entirely. Anyway, you should be able to correct the situation by doing the RX gain calibration with the optional S9+40dB step. The bad news is that your XG2 is will not provide this signal. The XG3 however, will.

AB2TC - Knut

PS. At 0F temperature this morning my remote KAT500 was still doing fine with no perceptible change in tuning.

Richard Squire - HB9ANM wrote

I calibrated the S meters on all my friends' and my own K3's with the
XG2. All display S9 at 50 uV and S2-3 at 1 uV, which is normal.

On one of them, however, signals up to S9+20 dB seem reasonable, but
above that, the S meter goes to hardly believable +50/+60 dB, for rather
unrealistic reports... (50 mV at the antenna, from stations hundreds of
miles away??)

This happens mainly on the low bands 160/80 meters.

Has anyone encountered this kind of issue?

73 de Richard - HB9ANM
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