[Elecraft] S-Meter nd RF Gain Control.

Lyle Johnson kk7p at wavecable.com
Sun Aug 29 10:54:21 EDT 2010


  If you lack a signal source, you can attach a length of hookup wire to 
the antenna jack, tune to 49.380 MHz and tune in the ref osc signal.  
Adjust the coupling of the wire to the signal source (OK, just move the 
wire around) until you have an S9 signal using factory settings and with 
PRE ON and RF Gain max.

Don't move the wire!

Run RF Gain Cal as if you had a 50 uV source.

The advantage of this, even though it is not as precise as using a sig 
gen, is that the radio-to-radio variations in the IF amplifier 
gain-versus-voltage are mapped out and you'll often find you get 
smoother RF gain control operation after having run the cal.

If you mess up, K3 Utility can always reset you to factory defaults.

73,

Lyle KK7P

> I have my K3 completed for all but this part. I ran the K3 utility. At this
> point I don't have a signal generator to run this test.



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