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.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
