A detailed construction article about to build a W9TO keyer may be
found in Bill Orr's "West Coast" handbook on pages 597 - 600. The unit
in the handbook seems to have a circuit that is identical to the T.O.
keyers commercially manufactured by Hallicrafters.
Alan
WA2DZL
On Aug 12, 2004, at 12:22 PM, Jim Wilhite wrote:
In my 1964 handbook there is a construction article on and electronic
keyer
on page 253. Not being familiar with the TO circuit, I can't say for
sure.
73 Jim
de W5JO
----- Original Message -----
From: "James M. Walker" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio" <[email protected]>; "'Glowbugs
(E-mail)"
<[EMAIL PROTECTED]>
Sent: Thursday, August 12, 2004 10:14 AM
Subject: Re: [AMRadio] Original T.O. Keyer Article When?
Try the 1964 series, and also the 1964 ARRL handbook.
Jim
WB2FCN
----- Original Message -----
From: "Merz Donald S" <[EMAIL PROTECTED]>
To: "'Amradio (E-mail)" <[email protected]>; "'Glowbugs
(E-mail)"
<[EMAIL PROTECTED]>
Sent: Thursday, August 12, 2004 10:16 AM
Subject: [AMRadio] Original T.O. Keyer Article When?
I have a piece of homebrew here that says in Dymo labeling that it is
a
"TO
Keyer". I'd like to look this up. Does anyone happen to know the
ballpark
year when the original TO Keyer article was published? In QST I
assume?
73, Don Merz, N3RHT
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