edg@cup.portal.COM (05/10/88)
An earlier posting explained the way IMTS frequencies work and suggested
that the continuously ringing tone might be the idle channel tone.
My recollection from earlier days of scanner listening (before the
communications act of 34 was rewritten) was that the idle tone was a solid
sine wave of about 1000 hz.
I've heard the ringing phone on an IMTS channel (years ago) as well. It
never answered.
-edg
edg@cup.portal.com