K3 - S Meter funny

[Stewart Baker]

A  fellow club member commented on how his K3 S meter behaved in a
strange way when it was set SMTR MD = Abs. On investigation I
found that mine does the same.

On all bands SSB with the antenna input terminated with 50 ohms, I
found that the S Meter reading can go up when the noise level goes
down.

Situation...

ATT = ON with PRE = ON gives a S 2-3 reading.

Leaving  ATT = ON  and switching PRE=OFF,  the audio noise level
goes down, however the S meter now gives a S 4-5 reading !

With SMTR MD =nor, everything is as it should be.

Anyone else see this ?

73
Stewart G3RXQ
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[Craig Smith]

I've seen something similar, Stewart, but on CW.  Haven't investigated fully
yet, but this was occurring on 40 meters during the SS contest last weekend
when I switched the attenuator on and off (without preamp).  I have my S
meter calibrated in the absolute mode.  If I recall correctly, it was
increasing from S1 w/0 att to S3 or S4 with att.  Other than that
indication, the radio received just fine.

                73
                            ... Craig  AC0DS


<> Situation...
<>
<> ATT = ON with PRE = ON gives a S 2-3 reading.
<>
<> Leaving  ATT = ON  and switching PRE=OFF,  the audio noise level
<> goes down, however the S meter now gives a S 4-5 reading !
<>
<> With SMTR MD =nor, everything is as it should be.
<>
<> Anyone else see this ?
<>
<> 73
<> Stewart G3RXQ


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