[GreenKeys] RTTY at sea 1945 experiments3

[g.blackburn at j-omega-l.com]

We still used some cw back in the mid-sixties when I was an ET. Also subbed
as a RM at times, as they used my ham experience to their advantage! I well
remember standing RATT watches in radio room.
On HF we  ran AN/R-390A's into the crypto termiinals  then to the Model
28's; On LF we used AN/WRR-3's into the same setup. On occasion I copied FOX
cw from NBA and other stations; 5-letter groups at 26 wpm
Those lazy RM's occasionally asked me to sit on a cw circuit although my
knowledge of "Z" signals was minimal and I did not possess a "speed key"
license. Yes, there WAS such a qualification required to use a
"bug" on a Navy circuit!. Of course as an ET I did not have one!

Gene N4UJ
Part-time op NHNF and NIIZ (1966-68)   

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Today's Topics:

   1. RTTY at sea 1945 experiments (Nick England)
   2. Re: RTTY at sea 1945 experiments (Jeffrey Golas)


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Message: 1
Date: Mon, 18 Aug 2025 15:40:01 -0400
From: Nick England <navy.radio at gmail.com>
To: Greenkeys <greenkeys at mailman.qth.net>
Subject: [GreenKeys] RTTY at sea 1945 experiments
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	<CAB55hNfr2PGgo9ZXTKPC8EmpV9xe6z=d811dGSd7Mr+2bxFKXQ at mail.gmail.com>
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The US Navy's primary way of sending messages was via HF broadcasts from
shore stations to ships  - the Fleet (FOX) Broadcast.
They ran experiments in late 1945 about converting from CW (Morse Code) to
radioteletype.
https://www.navy-radio.com/fox-history.htm

I didn't realize that around-the-world echo was such an issue - I have heard
"long-path" echoes sometimes but not often. Despite the "not-great"
results from this experiment, they eventually addressed the issues and
converted over to RTTY on HF (and then UHF Satellite).
https://www.navy-radio.com/traffic.htm#fox

Nick England K4NYW
www.navy-radio.com
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Message: 2
Date: Mon, 18 Aug 2025 21:13:30 -0400
From: Jeffrey Golas <jeffg at junknet.net>
To: Nick England <navy.radio at gmail.com>
Cc: Greenkeys <greenkeys at mailman.qth.net>
Subject: Re: [GreenKeys] RTTY at sea 1945 experiments
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