[Elecraft] K3 - Receiver noise, no antenna?

[Bill Conkling]

Hi, 

 

I'm recently rec'd my K3 and am very happy with it.  However, I am wondering
what level noise is "normal" for just the receiver sitting with no antenna,
RF gain at 3:00, Audio gain at 9:00 and the "S" meter calibrated and set to
"Absolute"?

 

The readings I get are:

 

Band    Nor       ATT      PRE

160       S3        S5        S1

75         S3        S5        S1

60         S3        S5        S1

40         S4        S5        S1

20         S4        S5        S1

15         S4        S5        S1

12         S4        S5        S1

10         S4        S5        S1

6          S4        S5        S1

 

I also noted that even tho I set the SMTR to ABS, it actually showed
opposite on the S Meter, but with the Preamp on, the hiss did change to
slightly louder, very little change with the ATT.

 

I also noted a slight lower hiss level (audible) when turning the AGC OFF.
Above readings were taken with the AGC ON slow.  

 

Is this normal, or is there something I can do?

 

Thanks,,,,

 

 

...bc   nr4c