<p dir="ltr">Ah,ha. I believe you just told me the answer. ctcssfrom=usb and carrierfrom=none changes receiver operation from carrier squelch control to CTCSS control. Correct? We have a lot of noise spikes and momentary interference at our sites that override carrier squelch so we run CTCSS squelch almost always.</p>
<p dir="ltr">Now to figure out a macro to switch back and forth from COR to CTCSS via DTMF.</p>
<p dir="ltr">I understand the fob and simple usb don't decode or encode CTCSS. We use Comm Spec encode/decode modules for CTCSS and thus have separate lines for COR and CTCSS. </p>
<p dir="ltr">Thanks.<br>
Cole, AA7RD</p>