Yep,
It's done all the time in non ham circuits. Motorola
has or had two or three pulse control circuits.
You see these type of controls at airports for the
runway lights, metro hospitals for the Motorola Hear
system, ACC controller reverse control from an HF
radio (typical marine radio) and a "shack master"
and again with Motorola's old Micom HF Marine System.
They were all original pulse counter circuits, which
are now better done with a small pic or uP controller
circuit.
The potential for trouble is with inexperienced users,
pranksters and undesired pulse noise. Sometimes they
are from the same location...
cheers,
skipp
> "chris_inos" <[EMAIL PROTECTED]> wrote:
> can one remotely activate a repeater without tones?
> Say:
> click PTT three times within 3 seconds and repeater
> is up. click PTT four times within 3 seconda dn
> repeater is down
> thanks
> csi
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