I have been aboard many Liberty ships before they were taken off the sea
for unseaworthiness and have never seen spark transmitters fitted.
Even during WW2 the majority of US Libertys were fitted with the old
Mackay console,FT 101, the first all in one unit designed for ships. The
emergency Tx was the same unit as the main except that it was
able to switch power source from mains to 24v battery. Model 150AY.
The fewer RMCA equipped Libertys had the 3U console and they had a
separate battery powered emergency TX. ET-8025.
As I understand it, during the war HF was not included. This became an
after addition fitted external to the console ,(At a right angle to),
on the right hand side of the RR. HF receivers included either Mackay
138, RMCA 8506 or Scott -which required a Janette rotary converter.
Some Libertys were provided to U.K. and they were equipped differently,
they had a set of letters that preceded the ships name, indicating, I
believe, that they were wartime trade board ships or something similar.
This type of radio equipment is described nicely in the books, "The
Radio Manual" by Sterling & Monroe. They were used as texts in many
engineering and technical schools.
Just for old time enlightenment. (Victory ships; The consoles included
HF and in reverse to Liberty types, the majority were fitted with RMCA
and fewer with Mackay).
J J Miller W3DHO
73 de Meir WF2U
Landrum, SC
Quoting "J.J.Miller" <seas...@ptd.net>:
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Thanks again.
Spud VE1BC
From your message I extracted two Canadian Marconi model numbers which I
have added to the "wanted" list on my CMC web page. If you ever run across
any photos or info for the 3V-SW-8 receiver or the STT-4 transmitter. I
would like to hear from you.
***
Thanks again.
Spud VE1BC
No virus found in this incoming message.
Checked by AVG - www.avg.com
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15:33:00
I was trying to find them on here also. Hopefully someone will come up with
them.
I was not into it that deep 35 years ago and really had no interest in
getting more detail. Now of course those guys are long gone.
Spud
Regards:
Eric K. Weber
Radio Officer
WECH
702 US Flag ships authorized to employ HF A1 Morse Telegraphy....
No wonder it's hard to find a job now!
Rgds:
Eric Weber
Radio Officer
M/V Manulani WECH
Während das Weltkrieg I think all military ships had an Emergency
Radio Room. A friend was on a cargo ship in the Pacific, and when
things were happening his job was sitting in the Emergency Radio
Room.
To view this discussion on the web visit https://groups.google.com/d/msgid/radio-officers/17BAB566DC374873BF5B9297548131FD%40OwnerPC.
Spud, no....I only sailed on a Park, never a Liberty (tho I wish I had!!).
I, too, was surprised to see the 'Em Radio Room', but the Mate on
'Darton', who had sailed on other Parks, assured me it was
'normal'....pity nobody came up with one of the original 'plans'
for these ships!....though, I suspect, there would have been minor
differences between them.
Best from here!
73 de Mike. zl1mh.
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