[CW] Vibroplex EK1 keyer schematic/docs??

[D.J.J. Ring, Jr.]

I believe the EK1 was a combination of the Brass Racer and the Curtis
built-in keyer chip which was originally bought out by Vibroplex from
Hamco Paddles of Eurica, CA who made the Brass Racer as the Hamco
Scotia (and various varities of finishes from matt (Scotia) to
polished to machine turned, etc.

So I would search for the built-in Curtis keyer.  Also Martin Jue of
MFJ purchased the manufacturing rights to the Curtis chips from John
Curtis, K6KU so you probably could get the circuit diagram from MFJ.

I found a "QST" article from 12/1983 here:
http://www.hellocq.net/forum/attachment.php?attachmentid=367310

I bet the diagram will be 99% of what's in that keyer in the Vibroplex unit.

73

David N1EA

-30-
On Sat, Feb 20, 2010 at 8:58 AM, john <johnmb at nc.rr.com> wrote:
> Is there documentation and schematic anywhere for this paddle/key
> combination? I have one that I suspect is jumpered to function in a certain
> keying configuration.  Any pointers or a scan greatly appreciated!
>
> Thanks guys
> John k5mo
>
> ______________________________________________________________
> CW mailing list
> Home: http://mailman.qth.net/mailman/listinfo/cw
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:CW at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>