[Elecraft] P3 0.050 Glitch?

Jim Brown jim at audiosystemsgroup.com
Fri Jan 14 13:50:53 EST 2011


On 1/14/2011 6:33 AM, Guy Olinger K2AV wrote:
> What happens with the Yakencom 160-6 transceivers at 6m?

More to the point, what happens on any band 10dB below S9?  The rigs 
I've measured with an HP generator have really lousy linearity, 
typically 3dB per indicated S-unit below an indicated S6.

There are many components of a signal report, not the least of which is 
the absolute gain of the RX antenna in the direction (both H and V) of 
the other station. And how do you adjust for the use of a Beverage, and 
of outboard preamps?

FWIW, I typically give reports by ear on the first exchange, but may  
give a second report after watching the calibrated K3 meter on the 
second transmission, sometimes switching from the Beverage to the TX 
antenna for comparison.

If it's practical to do so, I would suggest an option .to allow 
adjustment of S-meter (and/or P3) calibration by band to account for 
external preamps other than the Elecraft preamp.

73, Jim K9YC


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