Radio rooms of various vessels

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

Radio rooms of various vessels

Some videos of ship's radio rooms captured around the web where the visibility of these images is absolutely none. In some parts of the video I include some of my audio recordings because the videos were mute (without sound.)

https://youtu.be/snSAB1rUJOc

[Lawrence Cohen]

Do any of you remember motor generators installed at the console?

I recall seeing this on a ship as late as the 1960s, I think on a tanker.  

Any info would be

appreciated.

Larry 

WA2TRJ

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[Dr.Hess]

I was on at least one tanker, a Cove Shipping T5, if I recall, that had a MG running the RADAR.  400HZ, if I recall. It was behind the console.

[Richard Freedland]

I don’t have much to add, except to say that I had an MG set on the Globe Progress (Maritime Overseas Corp.), my very first solo ship after getting my six-month endorsement.  That was in 1968.  I had never seen such a setup before, so I asked to have someone from ITT/Mackay come down to the ship to explain it to me before we set sail from Corpus Christi to India. As I recall, it was located under a table in the radio room and was very noisy.   It was only used when transmitting. 

73,

Richard Freedland

Miami, FL

Sent from my iPhone.

On Jan 8, 2023, at 2:38 PM, Dr.Hess <drh_f...@drhess.net> wrote:

I was on at least one tanker, a Cove Shipping T5, if I recall, that had a MG running the RADAR.  400HZ, if I recall. It was behind the console.

To view this discussion on the web visit https://groups.google.com/d/msgid/radio-officers/74f409e1-4326-407e-86f1-f864ca3f3828n%40googlegroups.com.

[Lawrence Cohen]

Thanks, you confirmed my memory.  

The one I saw was below the console close to the front. Simple toggle switch on front bench.   Might have been on a Sinclair tanker, can't recall.

Was wondering what voltage conversion they used them for.  Thought most Radar units were self contained as to 

power supply.  Guess this wasn't always the case.

Larry 

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[Lawrence Cohen]

Amazing that the Motor Generator sets were still in use that late in time.  I remembered

them late in the 60s but couldn't imagine what it powered.  I recall the one I saw on a tanker, mounted below the

op position console- with a switch on the underside of the front of the desk.   I guess I thought they had

transformers and rectifiers for high voltage by that time.  It was 20 or more years after WW2 and I think they

were scrapping the ships before they scrapped the motor generators.   Wonder how many ships in the 1960s were equipped that way?  

I can see vacuum tube transmitters and receivers hanging on but motor generators really surprised me.  

Larry

https://groups.google.com/d/msgid/radio-officers/ADC19047-3E6E-4326-BFC8-675087F095D7%40gmail.com

.

[Eric]

It was common to have 400 or 800 HZ MG sets for Radar’s up till the late 80’s.

I suspect the under console MG set was the power supply for the main transmitter… 800 HZ AC to make the A2 modulation no tubes required.   

I visited the SS John B Waterman in Ethiopia 1978, one of my union brothers was assigned to it… memory is too weak to remember his name….   A C2 freighter with the original radio console… it used an MG set for the main transmitter.     Another fun note, not possible in todays world, on the USCG books it had been scrapped several years earlier… they only called in ports without USCG presence.   

Eric Weber

On Jan 8, 2023, 6:43 PM -0600, Lawrence Cohen <cohe...@bellsouth.net>, wrote:

Thanks, you confirmed my memory.  The one I saw was below the console close to the front. Simple toggle switch on front bench.   Might have been on a Sinclair tanker, can't recall.Was wondering what voltage conversion they used them for.  Thought most Radar units were self contained as to power supply.  Guess this wasn't always the case.Larry 

[Jeremy Allen]

Not radio room, but when I was on a C-5 in 2004, we had M-G sets for the yard and stay cargo winches.  I never dealt with them, so I don’t know any of the technical details.  The radio room on that ship had all the telegraph gear stripped out of it except for the dummy load.  That is now part of my shack.

 

Jeremy

 

Sent from Mail for Windows

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

Hess, do you mean radio or radar?

73

DR 

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[John Bell]

Hi Guys,

Every Marconi ship I sailed on in the 60's had an MG - a 12Volt motor with a 110 Volt generator on the same shaft. Everything in the shack could be powered off it from the 12 Volt batteries, by changing the switch from ship's mains to battery. They usually lived somewhere near your feet and you could hear them. I only had trouble with one when the brushes wore down on the genny.

73 John F5VHC

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[Dr.Hess]

The MG ran the RADAR.  I think it was the Cove Ranger with the MG, and that was the early 80's.

[Lawrence Cohen]

Ah ha- that makes sense.  Still, I didn't think it was that widespread.  I recall emergency

battery rooms on most ships, but thought the motor generator rigs were sort of outdated and

unusual.  Didn't realize they were that widely used.

Larry

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

Many ships were still sailing in 1999 that had been constructed in 1950-1965 era when MG sets were used for the reserve modulated continuous wave transmitter.

After about 1970 or so, ITT/Mackay introduced it's beautiful solid state reserve transmitter ITT MACKAY MARINE RESERVE TRANSMITTER TYPE 2017 that used 2 MHz crystals and a divider circuit to reach 500 kHz.  

73

DR

[Hans van den Toorn]

The general cargo ships I sailed on in the 1960s all had 220 Volt DC mains, so no transformers could be used.
All transmitters and receivers were running on MG-sets
I recall transmitters like RCA ET8010, RCA ET8019, TDE, Marconi Oceanspan, BC375, 
Receivers AR88, BC348, BX925 also running on small rotary converters.
Radar Kelvin & Hughes 14/12 same thing.
Boxes full of spare carbon brushes in all sizes in spare.

When I moved to the tankers this was all history, they all had 3 phase AC.
What a relief!

73

Hans PA3ERE

Op ma 9 jan. 2023 om 20:00 schreef Lawrence Cohen <cohe...@bellsouth.net>:

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[Lawrence Cohen]

I appreciate all the info everyone is providing.

By the 60s, I had seen many radio rooms, but never encountered

the MG-sets until late in the 60s on an older ship.  I was unaware they

were so widespread.  This is the type of technical stuff that needs to be recorded before

all of us disappear.

Larry

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

That's the purpose of this email list, the list is fully searchable and open to the public, but access to sending emails is restricted to those who "know" the subject.

Unfortunately, many people have LOTS of artifacts but they either send them directly to me - and I get hundreds of emails a day - or they don't send them at all.

What's such a big deal of sending them to radio-o...@googlegroups.com?  They don't do it.

I know people have photos of WCC, WSL, perhaps some still have WSF and WNY photos, pamphlets from RCA, TRT and ITT/Mackay.

Some have recordings, if the recording has some "personal audio" you wish to have deleted, I can  do that for you, or download AUDACITY https://www.audacityteam.org/download/ and use jacks from your old cassette or reel-to-reel recorder to the computer,  or  SEND the media (magnetic tape) to me.  I have ability to playback:

1. Reel-to-Reel at 15, 7-1⁄2 , 3-3⁄4, 1-7⁄8 inches per second (I no longer have a microcassette recorder which has 1-5⁄16 ips)
2. Recording Disk at 78 rpm, 45 rpm, 33-1/3 rpm and 16 rpm.
3. Cassette
4. CD
5. DVD

I have had submissions on reel-to-reel - most notably the tapes that my friend John Dilks submitted which belonged to Radio Officer Bill Gould,III  https://archive.org/details/WilliamB.GouldIiiWirelessRadioPioneer.His500KhzRecordingsOfMarch

Some American Morse  records were also sent to me at  78  rpm!  

73

DR

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[Douglas L]

Some of the 1960’s Mackay consoles used an emergency receiver with B batteries and a small motor generator for the reserve transmitter. The SS Mount Vernon Victory had that setup in the late 1980’s.

I thought it was pretty archaic.

73,

Doug/WA1TUT 

On Jan 9, 2023, at 3:10 PM, Hans van den Toorn <hans.van...@gmail.com> wrote:



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