One is positive voltage and the other is negative during an active signal. With dsp you are just listening to the discriminator audio for the change. Sent from my iPhone
On Sep 20, 2015, at 11:16 AM, Robert Newberry <N1XBM@amsat.org> wrote:
I've gotten a lot of good info. I've got some work to do to figure this strange noise out.
I do have one question.
Ctcssfrom=dsp is what I use. I currently use a DMKURI. I've noticed the USB and USBinvert mention using a USB fob. Can anyone elaborate on the differences of these two?
N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086
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