In article 5LYVj.56213$5Y1.20280@trnddc04, "JB"
wrote:

wrote in message
...
I'm totally new to amateur radio, so this may seem like a stupid
question. Does the typical 2 meter or UHF repeater repeat DTMF
tones?

ICOM radios have an optional DTMF Decoder to control squelch, and I
was wondering if I could set the frequency to a local repeater and
only hear messages when the correct DTMF signal is sent. That way I
could use repeaters and still have the privacy like subtones, instead
of listening to everything that comes accross the repeater.


But, this cool functionality won't work if repeaters don't repeat
DTMF
sent to them.

MrPace-

JB is correct. Although some may not, a repeater will commonly
filter-out received sub-audible tones. If a transmitted tone is needed,
it would normally be re-generated in the repeater transmitter.

This is the only way to ensure that the repeater transmits a good tone,
rather than repeating one that may be at the wrong level or slightly off
frequency. (It also provides an opportunity for the repeater to
transmit a different tone than it receives.)

Fred
K4DII