[Elecraft] OT - Old Keyers

[Joe Subich, W4TV]

Fred,

Here's a short bibliography from the 1960 Handbook ...

Brann, "In search of the Ideal Electronic Key",  Feb 1951
Bartlett, "Compact Automatic Key Design",  Dec 1951
Kaye, "All-Electronic 'Ultimatic' Keyer", April & May 1955.

I'd bet you're looking for the Kaye articles - all of 1955
is here: https://archive.org/details/qstamer00amer

73,

    ... Joe, W4TV


On 2014-07-04 6:48 PM, Fred Jensen wrote:
> I knew there was a history to this.  Related question:  About the end of
> 1956, I and a couple of my teen friends built "electronic keyers" from
> some magazine article which is long gone from my memory.  I remember
> they had 8 or so dual triodes [12AT7's/12AU7's ??], had self-completing
> dots and dashes, and nothing else.  With the power supply, mine weighed
> about a small brick and was similar in size. Used a relay for the
> then-ubiquitous cathode keying.  We modified our bugs to key them.
>
> I'm fairly certain the design pre-dated the TO-Keyer, I think the TO
> came about 10 years later, and as I recall used fewer tubes.  If any
> OT's remember the 50's well enough to identify my keyer, I'd appreciate
> hearing from you.  I had an opportunity to operate as HS1FJ for a few
> weeks in the mid-60's, Dad sent me my keyer and Lionel J-36, and when we
> went back to war, I never saw either of them again.
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 2014 Cal QSO Party 4-5 Oct 2014
> - www.cqp.org
>
> On 7/4/2014 12:49 PM, Joe Subich, W4TV wrote:
>
>>> For that matter, why are there two Iambic modes in the first place?
>>
>> The original "Curtis" Iambic mode completed the element (dot or dash)
>> being sent when [both] paddles were released at the same time.  The
>> iambic mode in the AccuKeyer had a logic error - the element memories
>> were set as soon as the previous element completed - that completed the
>> element being sent and then sent the *opposite* element if both paddles
>> were released at the same time.  This became known as Iambic B to
>> distinguish it from the original Curtis iambic (Iambic A) mode.
>
>
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