Struggling with a new DMK URI and first time use of asterisk, in a test
setup with an HT as the audio source.
My conclusion is that Asterisk needs to have the CTCSS present no matter
what?
Settings are:
carrierfrom=usbinvert
ctcssfrom=no
rxdemod=speaker
txprelim=no
txtoctype=notone ; no - CTCSS tone encoding with no hang time
It took me a while to figure out that "invert" means that the COR relay is
closed when the signal appears (I would have thought this was not-invert).
My tests show that the repeater function does not key up unless both the COR
and CTCSS are present. One, or the other, does not do it. This is not what
I expected when I selected "no" for the "ctcssfrom" parameter.
On the other hand, even when you select 'no" for the "txctcss" it still
transmits a tone, so maybe it is consistent.
Second issue: The loudest playback sounds cause the URI to go into
saturation and distort. I may not have calibrated the levels very carefully,
but even if I manually lower the txlevel setting from 800 down to, say, 300
it still distorts - it's just a quieter distortion. What can cause this?