[Elecraft] P3 - Displaying my signal

[Bill K9YEQ]

Allan,

Great idea!!!  Thank you! Back to adjusting my audio.  I will use the K3
easy which is just super for fast adjustment.

Bill
K9YEQ

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Alan Bloom
Sent: Wednesday, October 13, 2010 1:04 PM
To: Gary Ferdinand
Cc: Elecraft
Subject: Re: [Elecraft] P3 - Displaying my signal

The P3 is supposed to freeze when the K3 is transmitting.  However, when the
K3 is set for CW semi break in, it unfreezes after the first character.
This is a bug not a feature.  :=)

If you would like to view your transmitted signal for test purposes, you can
do it by temporarily disconnecting the RS-232 cable to the K3.  That
disables the freeze-on-transmit function.  What you are viewing is stray IF
leakage coming out the K3's IF OUT connector.  The signal level is rather
low and varies with drive level, frequency band, and the particular K3.

However, I do find it useful for adjusting the transmit equalizer.  With my
K3 set for SSB, I turned on peak hold on the P3 and talked into the mic for
a few seconds.  The peak value is a fair representation of the transmitted
spectrum.  I could see that it was way too bassy (low audio frequencies
stronger than the highs) which results in a muddy-sounding signal that lacks
"punch".  It took maybe 5 minutes playing around with the K3 TX equalizer to
get a nice flat spectrum.

Alan N1AL