[CW] Gibson Girl

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

Depending on the vintage it sent SOS on 500 kHz, 8364 kHz in A2 keyed mode
(Modulated Continuous Wave), later 2182 DSB AM with alert MAYDAY tone was
added.

Old sets just sent SOS on 500 kHz.

A switch and key were provided to send manually and a receiver received DSB
AM which means that they could hear spark and modulated CW on 500 kHz.

They were used, and I used one myself but only to test it on 500 kHz into a
lifeboat radio antenna held on a ten foot pole and wires strung fore and
aft on a lifeboat.

You can hear two real SOS recordings at:
http://archive.org/search.php?query=uploader%3A%22n1ea%40arrl.net%22&sort=-publicdate

or if they link doesn't work:  http://www.tinyurl.com/djringjr

73
David J. Ring, Jr., N1EA <http://www.qsl.net/n1ea/>  Radio-Officers
Group<http://groups.google.com/group/radio-officers?hl=en>-- Join
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*C**hat* Skype: djringjr MSN: djringjr at msn.com AIM: N1EA icq: 27380609

=30=



On Sat, Nov 17, 2012 at 10:50 PM, John Barnwell <radioniner at yahoo.com>wrote:

> I was cruising ebay this evening, and was looking at a Gibson Girl. No,
> not the vixen beauties from the early days. The little self-contained
> transmitters which vessels carried to be used once safely afloat in the
> lifeboat. I recall performing a shipboard training exercise with one of
> these rascals. Bored everyone to utter tears. Does anyone have personal
> knowledge of one being used for it's intended purposes? I can't recall if
> the SOS was sent automatically, or if we had to send by hand? Does anyone
> recall the power output at full speed hand cranking?
> At any rate I thought this might be an interesting thread from fellow RM
> types.
> 73 John Barnwell, Ret. USCG
>
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