Whether or not using the input of the repeater for control purposes fulfills
the requirements of Part 97, , using DTMF commands on the repeater input
presents two potential problems:
1. For it to be reliable, you have to be able to pretty much capture the
receiver. It doesn't take
much on channel interference to make your decoder unable to recognize the
DTMF commands.
2. Throwing sufficient suds at the repeater input to fully capture the
channel means that your control commands are pretty easily heard on the input
and
capable of being decoded by the repeater users,
both the benign and the miscreants.
I MO, for the time and money put into a repeater, the outlay for an out of
band control receiver
and/or a phone line seems like a pretty reasonable cost for the security it
provides.
K7IJ
In a message dated 11/7/2007 12:50:36 P.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
Isn't any operator on the repeater in RF control of the
repeater when they are using it? Also isn't the DTMF tone
control through the normal repeater pair remote control?
Vern
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