[Elecraft] LOGIKEY Model K3 Keyer
[email protected]
[email protected]
Sat Mar 30 22:32:01 2002
Check to be sure the DC Input has a reverse polarity protection diode
going to the voltage regulator and Q2.
The Model K3 Keyer never had a polarity protection diode. Schottky
diodes
are used and are cheap protection.
Reference info goes back to QST August 1995, p. 26, QST Oct. 1996, p. 71
ARRL Handbook 1994, p. 29-6 to 29-11. CMOS Super Keyer II goes back to
QST 1990, Nov. p. 18. http://www.qth.com/Idiom
Ken Brown-N4SO
Mobile, AL EM50tk
Elecraft K-1
4 ele. monoband yagi
[email protected]
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