The Ultimatic keyer dates back to at least 1953, and was done with a
12AU7 according to a bibliography of QST articles. Jackson Harbor
offers it in their keyer chips, and K1EL's K12 keyer chip does as well,
so any rig that uses either of thses (OHR for example) offers it as an
option.
Leigh/WA5ZNU
On Mon, 10 Sep 2007 8:39 am, Goody K3NG wrote:
Forgive my ignorance, but how many other commercial rigs have ultimatic
keying?
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