One of the first things I noticed after getting the P3 and poking around
the phone bands was how frequently a station's audio was concentrated
right next to the suppressed carrier.
K9YC helped me set my TX EQ, and the goal was to cut the lows [next to
the carrier frequency] which consume a lot of the RF power and
contribute little if anything to intelligibility. With a 5 or 6 KHz
span, the display is very striking and signals with a desirable spectrum
seem to be a bit rare.
I don't frequent SSB very often, but when I do, usually in an NAQP or
Sweepstakes, I regularly get unsolicited "Great audio" comments with
Jim's settings.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org
On 5/21/2016 9:33 PM, Richard Fjeld wrote:
By looking at how his signal filled out the voice band in the waterfall,
and also the pattern of it on the display. It is a crude test using a
person's voice. Audio reports were the final test. He wasn't able to
adjust it by monitoring his own voice.
It would be better if the transmitting station had something like an AF
generator audibly coupled to the microphone to do a freq run within the
voice band at a constant audio level.
Dick, n0ce
On 5/21/2016 9:01 PM, Jim Brown wrote:
On Sat,5/21/2016 7:54 AM, Richard Fjeld wrote:
I was asked to help a ham get the transmit audio on his new import
equalized. What an experience!
How did you use the P3 to do this?
73, Jim K9YC
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