Alan,
It sounds like you're talking about a CTCSS, or
'tone squelch' accessory. If so, then, no, it doesn't
do anything with range or signal strength. It's just
a way of turning off reception of any signal that doesn't
have the 'tone', sort of like having a private line instead
of a party line with telephones. The tone is like a 'key'
that will open the 'door' to another radio that's using a
'tone squelch' so they don't have to listen to everything
else on a channel.
'Doc

Until it opens; then you hear everything even
those who are not supposed to be on your "private" channle.

The2x4


"'Doc" wrote in message ...


'tone squelch' so they don't have to listen to everything
else on a channel.
'Doc

only if they're keyed up at the same time as someone with the tone
is... otherwise, they go byebye...

-SSB

The2x4 wrote:
Until it opens; then you hear everything even
those who are not supposed to be on your "private" channle.

The2x4


"'Doc" wrote in message ...


'tone squelch' so they don't have to listen to everything
else on a channel.
'Doc