On Wednesday 03 March 2004 04:04 am, Mike Harrison scribbled:
> Some of these parts have a limit on the maximum carrier-on time due to =
the
> way their AGC and data slicers work. A solution would be to use a 556 t=
o
> produce bursts of 38K carrier at, say, 1KHz

Some?  Do you know of any that do not have this limitation?  Perhaps it m=
ay=20
substitute easily.


> Why an electromagnet - you could just use a magnet.

The electromagnet is for easier use, as pressing a pushbutton would be ea=
sier=20
than moving a magnet back and forth repeatedly.

Cheers,
-Neil.

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