JJ>
JJ>        BTW: What are PL tones?  Are they the ones that sound like a
JJ>        phone, or are they the older two tones (county still uses
JJ>        those)..
JJ>
JJ> * SLMR 2.1a * Don't blame me... I'm from Mars!
JJ>
JJ>--- Maximus 2.02
PL tones are also known as "sub-audible" tones or CTCSS (Continuous Tone
Controlled Squelch System.) A CTCSS tone is transmitted continously
while a person is talking. Certain systems require that a CTCSS tone be
present in the transmission to open the squelch on a repeater or on the
receiving party's radio. With a CTCSS system, you only hear
transmissions that carry the tone at which your receiver is set. Not
likely you'd want this on a scanner 'cause it'd really limit what you 
could hear. A CTCSS display unit would be nice, That is, a unit that
doens't require the tones to open the squelch, but displays what CTCSS
tone is being transmitted.
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