[Elecraft] P3 lvl cal?

Alan Bloom n1al at sonic.net
Sun Apr 14 19:19:17 EDT 2013


Tom,

There are several reasons why the signal level can be different on the 
P3 and K3, as explained in the "How to Set Up and Interpret the P3 
Display" section of the P3 Owner's Manual.  The main reason is that the 
effective bandwidth of the P3 is narrower than the K3, so more of the 
signal gets through to the K3 S meter than a single pixel on the P3 
display.  For that reason, the signal or noise level on the P3 can 
appear quite a bit lower than on the K3 S meter.

Alan N1AL


On 4/14/2013 3:46 PM, cx7tt at 4email.net wrote:
> Hello All,
>
> Question about the Lvl cal operation of the P3. I have noticed a 2 S
> unit diff between the K3 and P3.  I used the XG-1 to make sure the K3
> was set properly. Using Lvl cal, I noted the default was -5.4 and my  P3
> was -9.6.  To get a K3 S meter reading of S4 to equal S4 on the P3, I
> had to increase the Transfer gain to -30.0!
>
> This seems excessive. Would appreciate some guidance on how to resolve
> this issue.
>
> 73
> Tom
> CX7TT
>
>
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