[GreenKeys] Fw: BBC enquiry - telegraph machine

[Nick England]

Undulator was certainly the standard British word for ink recorders used on
wireless circuits. See for example
http://www.rnmuseumradarandcommunications2006.org.uk/RATT%20AT%20SEA%20IN%20THE%20ROYAL%20NAVY.htm
(This is a fun and interesting site to read by the way)

The US Navy knew the equipment as "Recorder, Code, Tape" or "Tape Code
Recorder" or "Code Recorder", but they were also referred to as undulators
in USN training manuals. They were used for recording radio signals
(intercept) as well as for high speed Morse circuits before the switch to
radioteletype (RATT).
See
http://www.navy-radio.com/morse.htm
and
http://www.navy-radio.com/morse/rd112-op.pdf

Cheers,
Nick England K4NYW
www.navy-radio.com


On Tue, Jun 17, 2014 at 12:10 PM, Jim Haynes <jhhaynes at earthlink.net> wrote:

> ...
> Ink recorders were also used in high-speed Morse work (up to 500 wpm
> on radio circuits) but I don't think those were called undulators.  And
> they used conventional Morse make-and-break keying so the dashes were
> 3 times as long as the dots.
>
> jhhaynes at earthlink dot net
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20140617/04ebfd37/attachment.html>