JosephKK wrote:
On Sun, 30 Nov 2008 22:52:16 +0000, Dave wrote:

JosephKK wrote:

Which make and model / series? There are dozens of variations.

These are the standard CTCSS freqs:

http://www.batnet.com/~mfwright/ht220plcodes.html

http://en.wikipedia.org/wiki/CTCSS

Have you read your own references?

Bottom line, most any tunable tone decoder.

If a vibrating reed can be considered a "decoder" then you are correct.

However, there are not "dozens of variations".