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500 kHz Recordings A9M

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  #376  
Old 6th June 2017, 23:48
gwzm gwzm is offline  
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I'll second the R50M drift problems. Sometimes it was so far off I had to use the BC221 heterodyne frequency meter (a standard item on most of the older Brocklebank ships) to find the right frequency in the first place then once it was tuned in you usually had to follow tune with your left hand while trying to copy traffic.
The Malakand/GOFP had a WWII surplus Marconi B28/CR100 as the "standby" receiver and that's what got used for most of the traffic.
The Atalanta and Mercury receivers were pretty good as regards drift and the logging scale numbers changed very little for the stations you had noted.
Happy days,
gwzm
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  #377  
Old 7th June 2017, 03:47
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Quote:
Originally Posted by Tony Selman View Post
It wasn't much good during the area scheme either Bob. I am surprised it was still going into the 70's. It was the receiver on my first two trips to sea on Matra/GZYJ. If there was a receiver that had worse drift on HF I have never heard of it.
The old CR300 was pretty crook for drift also....
Mike
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  #378  
Old 7th June 2017, 09:34
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Mike, I only ever sailed with one of the CR series once and I can't remember which model it was. It must have been on one of the older Brocklebank ships but can't remember the ship either. I don't recall drift being too much of a problem but seeing as I am not sure which receiver, nor which ship, there is strong evidence this might be a memory problem!
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  #379  
Old 7th June 2017, 20:25
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Bob - Yes, I was referring to the R50M. I must have been lucky with the two I sailed with in the mid-60's. I used to tune the area scheme traffic list at the end of a watch, put it on stby and there it was ready for the next list. This one in the pic did have the advantage of a long, long wire aerial though.

The T80MH Main Tx certainly was a vast improvement on the Siemens SB186x that I had the trip before !

David

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File Type: jpg gmoh.jpg (26.9 KB, 45 views)
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  #380  
Old 7th June 2017, 20:47
Finbar O'Connor Finbar O'Connor is offline  
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500 khz 6ZFU Standby receiver

Greetings,

Thanks to all for the information on my picture of the radio room
of the MV Anthony 2 callsign 6ZFU.

I have several pictures taken, of better quality, the one attached,
shows the standby receiver, which I ended up using instead of the
R50. Again, I don't recall the type number of this receiver either.

The main problem with that particular set was the mechanical
drift on HF when we were light ship in rough seas, the juddering
of the bridge accomodation mean it had to fix my fingers on the tuning dial to prevent movement of the ( I presume ) variable tuning
capacitor. Luckily most of the traffic on that freelancing trip was
on MF rather than HF. Getting the Propo football results for the
Greek crew was much much more important than anything else,
including the Captain.

Did I mention that the ship went to the scrapyard soon after
my trip on her.

Kind regards
Finbar EJM retired EI0CF
Attached Images
File Type: jpg RadioRoom6ZFUsmallRXmod1.jpg (251.8 KB, 56 views)
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  #381  
Old 7th June 2017, 20:55
gwzm gwzm is offline  
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Hi Finbar,

That standby receiver was, ISTR, the IMR60 and it was pretty good. It usually ran off the ships mains. If you lost the mains, you just lifted the lid slightly and it transferred to the emergency battery. I sailed on the Makrana/GWWV with that receiver and the IMR54 (re-badged Eddystone) as the main receiver. Both were rock solid and never gave any bother.
Happy days,
gwzm
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  #382  
Old 7th June 2017, 21:28
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It's a peculiar thing when you look back how the kit could change from one ship to another. My first deep sea trip on my own as a sparky was on the Weybank with a standard Marconi Atalanta/Oceanspan station and Mk IV radar.

The next trip was with a fully synthesised ITT Mackay station on the Hudson Friendship with a Norcontrol anti-collision plotting radar, a Phillips Video Cassette in the bar (which used actual plug film cassettes !!) Pretty far out stuff for 1972 (if you'll excuse the expression.) Like jumping out of the Moonlander and onto the Starship Enterprise

The next trip the R50M and the station you see above. What a decade that was !!
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  #383  
Old 9th June 2017, 23:38
Finbar O'Connor Finbar O'Connor is offline  
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500 khz 6ZFU Emergency transmitter and Antenna board

Greetings,

Thanks for the contributions. Facinating comments and information.

Attached is another picture from the MV Anthony 2 6ZFU.
It shows the Emergency transmitter and and above it the
antenna switching and isolating board.

Has anybody got the type number / name fro the rig ?

Kind regards
Finbar EJM retired EI0CF
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File Type: jpg EmergencyTx6zfuMOD1.jpg (290.6 KB, 44 views)
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  #384  
Old 9th June 2017, 23:49
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Quote:
Originally Posted by gwzm View Post
Hi Finbar,

That standby receiver was, ISTR, the IMR60
and it was pretty good. It usually ran off the ships mains. If you lost the mains, you just lifted the lid slightly and it transferred to the emergency battery. I sailed on the Makrana/GWWV with that receiver and the IMR54 (re-badged Eddystone) as the main receiver. Both were rock solid and never gave any bother.
Happy days,
gwzm
I believe the IMR54 was a rebadged Eddystone.
Several times I thought the stand by rx was getting too hot and lifted the lid for cooling at which time the built in rotary converter would noisily burst into life. It was a good receiver, stand by or not.
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  #385  
Old 11th June 2017, 00:49
Paul Braxton Paul Braxton is offline  
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Hi Bob. Ref your post 442: lovely to see an old photo of a decent radio room. I wish I had taken a few, plus some audio recordings. I loved that bottle of 'Gloy' paper glue next to the morse key. Brings back more happy memories of doing ALRS corrections.
Your 436: yep, Atalanta does have an ingenious bandspread control mech. My set here (still working) hasn't suffered too much over its (unknown) past. The control and general tuning mechanics haven't broken down yet. The bandspread was engaged after you had tuned in (on the 'cal' switch) to the 700 khz oscillator tones, one in each HF shipping band. You then moved the bandspread pointer to the vertical calibration black line on the bandspread scale and pushed the bandspread knob in to engage. After that, the gearing took over and you had a surprisingly accurate means of reading frequency off the lower scale. As you say, the thing worked really well and the logging scale, although very simple, worked as well also.
I still use my RX, every few days. QSX to some hams on 7 and 14MHz, plus still get the WWVH time signal. Happy memories, brought back to life, courtesy of those MIMCO design boys, whose machines were certainly built to last.
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  #386  
Old 31st July 2017, 22:02
Finbar O'Connor Finbar O'Connor is offline  
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500 khz SDJ Swedish Final transmission on 500 kHz

Greetings,

Attached is a recording of Stockholm Radio SDJ, sending their
final broadcast on 500 kHz.

No electronic keyer, just a straight key, nicely paced to reflect
the sad nature of the message and occasion.

Kind regards
Finbar EJM retired EI0CF
Attached Files
File Type: mp3 SDJFinalCW (2).mp3 (379.0 KB, 99 views)
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  #387  
Old 2nd August 2017, 19:00
5TT 5TT is offline  
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Thanks Finbar.
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  #388  
Old 2nd August 2017, 20:17
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I've heard a few of these now and I must be getting old and sentimental because they always choke me up a bit. The end of a truly incredible era.
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  #389  
Old 2nd August 2017, 20:40
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50 years is not a long period of time in history, but we should remember that 50 years ago, we bashed two bits of brass together to convey important messages !!!

David
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  #390  
Old 2nd August 2017, 23:14
freddythefrog freddythefrog is offline
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Nice to hear SDJ again after so many years Finbar.
Great stuff!
cheers 73.s de ftf
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  #391  
Old 3rd August 2017, 10:01
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Quote:
Originally Posted by BobClay View Post
It's a peculiar thing when you look back how the kit could change from one ship to another. My first deep sea trip on my own as a sparky was on the Weybank with a standard Marconi Atalanta/Oceanspan station and Mk IV radar.

The next trip was with a fully synthesised ITT Mackay station on the Hudson Friendship with a Norcontrol anti-collision plotting radar, a Phillips Video Cassette in the bar (which used actual plug film cassettes !!) Pretty far out stuff for 1972 (if you'll excuse the expression.) Like jumping out of the Moonlander and onto the Starship Enterprise

The next trip the R50M and the station you see above. What a decade that was !!
Exactly!

My first trip in 1980 was this magnificent white P and O box boat, with two (yes TWO) STR16000 main tx'ers and two beautiful synthesised Collins rx'ers...passengers, uniform of the day, all the P and O palava...we were on a liner service Australia-Japan....4 very nice ports in Japan (Yokichi, Osaka, Yokohama, Nagoya)...then Sydney, Melbourne and Brisbane...

My first ship by myself was a heap of ****, stinking old bulkie with a decrepit Marconi station...trading to awful iron ore ports on the Australian coast....

Bit of a come down...
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  #392  
Old 3rd September 2017, 15:43
Finbar O'Connor Finbar O'Connor is offline  
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5680 kHz Nimrod Rescue 12 works Malin Head Radio on HF

Greetings,

Attached recording from several years ago, before the RAF
Nimrods where broken up and destroyed, sadly.

Malin Head Radio has the full use of Short wave transmitter at both
Malin Head and also the remote MF HF and VHF site at Belmullet,
County Mayo, in the west of Ireland.

I am working Rescue 12 on 5680 khz, whose mission on the day
was to provide Top Cover , to a rescue helicopter we had operational.

Both Belmullet and Malin Head, use 750 watt Skanti transceivers,
to "Tee" type top loaded vertical antenna. In the case of Malin Head,
the Skanti is only used as a standby transmitter, if required on
MF and HF, as the main transceivers are now German built
R and S 1 KW rigs, working into the 150 foot towers.

These days, top cover is normally provided by Irish Air Corps
Spanish built, Casa fixed wing aircraft, or in some cases by
a second Irish Coastguard rescue Helicopter.

This recording is of the Belmullet transmitter on 5680 khz, keyed
from Malin Head Radio

Kind regards
Finbar EJM retired EI0CF
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File Type: mp3 NimrodEJM5680kHz.mp3 (111.8 KB, 81 views)
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  #393  
Old 21st September 2017, 16:11
Finbar O'Connor Finbar O'Connor is offline  
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500 kHz Recording Antwerp Radio OSA on 500

Greetings,

Attached is a recording of Antwerp Radio OSA , on 500 kHz.

I have checked the list of recordings I have posted here and can not
see it. Sorry if this is a repeat.

Antwerp Radio was one of the early closures on 500 kHz.

Kind regards
Finbar EJM retired EI0CF
Attached Files
File Type: mp3 AntwerpRadioOSA500khz.mp3 (288.4 KB, 70 views)
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  #394  
Old 21st September 2017, 18:16
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Unmistakable sound of a Russian key basher calling him.
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  #395  
Old 21st September 2017, 19:57
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At GKZ, if during a quiet spot, you went out on 500 with 'did di dah dah dit it (?) GKZ, it was almost guaranteed a Russian would come back with an OBS msg in exactly that style.

David
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  #396  
Old 28th September 2017, 16:37
Finbar O'Connor Finbar O'Connor is offline  
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500 khz Recording PortpatrickRadio GPK sounding good

Greetings,

Attached is a recording of ZCAO sending a TR, QTO Dublin.

I suspect the guy on the key at Portpatrick Radio was the late
Graham Mercer ( SK). Lovely crisp morse, no messing around
and a great signal. Mind you GPK is only 100 miles east of
Malin Head, where I made the recording.

The ferry from Dublin is a weaker signal, mostly over land,
and particularly the last bit on the Inishowen Peninsula, with a
range of mountains, south and east of Malin.

Enjoy
Regards
Finbar EJM retired EI0CF
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File Type: mp3 ZCAO3GPK500khzRx311294.mp3 (262.7 KB, 83 views)
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  #397  
Old 28th September 2017, 16:46
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Ron Stringer Ron Stringer is offline
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Thank you for that Finbar. As you say, lovely morse from GPK, I would have loved to reach such a standard but sadly, always struggled to develop a decent rhythm, even after several years at sea.
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  #398  
Old 28th September 2017, 16:46
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Listening to that I wonder if any other sparkies tried for 'the last dit' (who gets to send that last dit at the end of a QSO.)

There was someone at GKA who often played that game. I waited about 20 seconds once after he'd sent his last dit, then just tapped the key, and he came back straight away with his dit. I knew then I wasn't going to win this game.
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  #399  
Old 28th September 2017, 20:07
trotterdotpom trotterdotpom is offline  
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Quote:
Originally Posted by BobClay View Post
Listening to that I wonder if any other sparkies tried for 'the last dit' (who gets to send that last dit at the end of a QSO.)

There was someone at GKA who often played that game. I waited about 20 seconds once after he'd sent his last dit, then just tapped the key, and he came back straight away with his dit. I knew then I wasn't going to win this game.
.... meanwhile I was QRY 273!

John T
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  #400  
Old 28th September 2017, 20:43
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Had I known that I'd have kept on ditting ....
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