Ships Nostalgia

Ships Nostalgia (https://www.shipsnostalgia.com/forum.php)
-   The Radio Room (https://www.shipsnostalgia.com/forumdisplay.php?f=365)
-   -   Wireless room spares (https://www.shipsnostalgia.com/showthread.php?t=295201)

Harry Nicholson 18th October 2019 20:59

Wireless room spares
 
Any of you fine chaps recall the spares we carried by regulation? Was it two spare valves for each one of that type in use? And three for every two in use? Something of the sort methinks.
I'm thinking of the stocktake we would need to do before the start of voyage. Was the spares cupboard ever inspected and checked by some shore-side authority?
I'm attempting to write a bit of memoir about commissioning Brocklebank's Mawana's wireless gear for her maiden voyage in 1958. Don Butterworth was my boss. Tom Eggleston was Master.

sparks69 18th October 2019 21:22

The Radio Surveyor in Swansea just looked at my incredibly organised spares cupboard and said OK.
My experience was that when something went wrong it was usually something that wasn't on the spares list. Thankfully the radar spares usually held loads of components !

mikeharrison 18th October 2019 21:35

I sailed with a R/O on a Ferry who was a bit (ahem!) obsessive about accumulating a shack full of spares and tools and who knew each page in the RS catalogue.

I will always remember meeting the Electrical/Electronics Superintendent coming out of the shack and shaking his head in wonderment and saying "He (the R/O) has got THREE OSCILLOSCOPES!" .

This at a time when no other Ferry in the Fleet even had one Oscilloscope.
:-)
Regards, Mike

P.Arnold 19th October 2019 08:39

I recall, for valves. “ one valve for every three of a type, or part thereof”
3 valves of one type carry 1 spare
5 valves, carry 2 spare.

Many valves I found in the spares drawer, “Used but good”

YM-Mundrabilla 19th October 2019 09:57

“Used but good”

Sounds like my stock of light globes and lawn mower spark plugs.(Jester)

(until you need to use them that is ...............)

sparks69 19th October 2019 10:19

U B G - now there is a subject that caused problems !!

DickGraham 19th October 2019 11:01

I don't remember much about the spares except "Used but Good"!

And, of course, the "dipping fahrenheit thermometer". :)

Harry Nicholson 19th October 2019 15:11

Quote:

Originally Posted by P.Arnold (Post 3009629)
I recall, for valves. “ one valve for every three of a type, or part thereof”
3 valves of one type carry 1 spare
5 valves, carry 2 spare.

Many valves I found in the spares drawer, “Used but good”

Thank you; that's illuminating. Perhaps Brocklebanks carried more spares - i recall an incident with the HF tx Siemens SB186x. En route up the Hooghli, the main power valve failed (wish I could remember the name of that large valve with an anode top cap).
We had TWO spares for that single valve.
Removed the failure and asked the junior to pass me a spare. He fumbled and dropped it onto the deck - bust. I got the last spare myself and fitted it.
As I attached the connection to the top cap, it broke away from the glass leaving a tiny trace of metal on the pip.
I wrapped a towel around the valve, and another around my face (goggles fitted). With the big valve between my knees, I filed away enough of the glass pip to expose more metal. Then gingerly applied a drop of solder to the tiny bit of wire Then soldered the anode connection in place - whereupon we were back on air.

Wismajorvik 19th October 2019 20:33

807, 813?
Spare valves, lamps, fuses and brushes. Nothing for the VHF.
AVO minor, couple of bent screwdrivers and a 100 watt soldering iron seemed to be the norm.

sparks69 19th October 2019 20:47

Luxury - TWO bent screwdrivers. I had to MAKE one on the British Scientist (?) when converting cabins into luxury Apprentice accommodation.
The previous R/O had forgotten to re-order replacements.
Happy Daze.

duncs 20th October 2019 01:57

You were lucky to have spares!

Mad Landsman 20th October 2019 09:26

Quote:

Originally Posted by sparks69 (Post 3009697)
Luxury - TWO bent screwdrivers. I had to MAKE one on the British Scientist (?) when converting cabins into luxury Apprentice accommodation.
The previous R/O had forgotten to re-order replacements.
Happy Daze.

Did you make it with the bend, or add the bend later(==D)

J. Davies 21st October 2019 04:13

1981 I was on board a Hong Kong registered ship calling at a few ports on the Aussie coast. In Sydney the local radio inspector came on board, quite obviously looking for defects due to a cabotage dispute raging in Oz at that time. Unions and inspectors swarming everywhere making life difficult. This bloke could find nothing wrong. The logs and batteries and equipment were all in good order. Finally he put us down for a deficiency; no non-magnetic screwdriver for radar maintenance . Ship agent was scrambled and scoured the shops for said screwdriver, which he found after some hours. Ship was released to sail to next port but we had missed the pilot slot so were one day delayed. True story.

Ron Stringer 21st October 2019 12:06

My visit to a ship at Shellhaven to review some trials equipment coincided with a Post Office survey of the (MIMCo) radio station by the infamous Harry Gilder. A local MIMCo technician was in attendance.

Harry could find nothing wrong with any of the equipment or documentation but eventually said he would not give clearance because the spares were not in compliance with the UK's Radio Rules' requirement that there should be an amount (I believe 1oz.) of petroleum jelly - better known by its trade name, Vaseline. There was indeed a tin of Vaseline (marked with the proper quantity) present in the Radio Room but someone had taken a finger swipe across the surface, removing a small amount of the content. Harry claimed that therefore there was less than the required amount present in the tin and he could not approve the installation as being compliant.

As the ship was due to sail with the tide, the MIMCo technician had to drive posthaste to East Ham depot to collect another tin of Vaseline.

It happened to be a Shell tanker and I'm sure that the engine room had enough suitable grease to submerge the surveyor never mind coat any battery terminals or other metal surfaces needing protection against corrosion, but "rules are rules", "it's more than my job's worth ...."

Varley 21st October 2019 12:55

As the seagoing towrag on attachment to East Ham's tech staff one leave it often fell to me to be left holding the Radio Surveyor's hand (not a requirement except when Harry was on the job). A thorough man indeed.

There is the story (possibly Ron's) of his grasping the mains leads to the DF Set only to find that the insulation remained only between the poles and not on the outside where Harry was then completing the circuit across the mains. I am told he swore the technician in attendance to say nothing of the jig that he danced until disconnected and I certainly did not hear that story until he must have been long gone.

I did take the opportunity to have him sign off on my six months sea time and his signature it is on my MRGC (M/57).

R651400 21st October 2019 16:56

1 Attachment(s)
#8 .. Siemens SB186 shortwave transmitter PA valve (RF pentode) 4069A.

Harry Nicholson 21st October 2019 17:38

Quote:

Originally Posted by R651400 (Post 3009901)
#8 .. Siemens SB186 shortwave transmitter PA valve (RF pentode) 4069A.

That's excellent, good sir. They look to be what I recall. I had it in mind the valve was a beam tetrode - but, as you say, an RF pentode.
You did well to locate that image.

david.hopcroft 21st October 2019 20:10

1 Attachment(s)
I had a valve tester on my last ship. Had never seen one before, but it turned out to be part of the Chief Eng's gear and the installers didn't know where it was meant to go. I saw off a couple of the 'Used but Good' valves before I got the measure of it !

Fond memories of the SB186. Not brilliant, but I don't remember any problems - it just worked ok.

David
+

R651400 21st October 2019 20:52

#17 ... SB186 info from an old text book and 4069A pic from Fleabay amazingly still available today..
Wouldn't like to comment on why RF pentode and not beam tetrode except what valve manufacturer Siemens preferred.

duncs 23rd October 2019 03:44

I've always thought that MIMCO had somehow acquired a huge amount of 807 beam tetrodes, and designed all their tx,s around it. Never had a problem with it.

R651400 23rd October 2019 07:17

Philips (Eindhoven) apparently had the patent on RF transmitting pentodes and to get round this British scientists developed the beam tetrod that became the ubiquitous 807 for RF power and KT66 for AF.

expats 24th October 2019 10:13

I took over a ship at very, very short notice in Leith (sailing within hours)..The R/O had already gone so no 'handover'...We'd sailed when I got to looking over the spares cupboard...It looked neat and tidy with an up-to-date list...

Sadly, when I checked the valves, loads looked 'used'..The carboard boxes were opened but the opened end was at the bottom so they all looked new.

Just the one trip up the Baltic and I was off..but my spares demand, on leaving, raised eyebrows at the depot,

sparks69 24th October 2019 18:12

Quote:

Originally Posted by R651400 (Post 3010099)
Philips (Eindhoven) apparently had the patent on RF transmitting pentodes and to get round this British scientists developed the beam tetrod that became the ubiquitous 807 for RF power and KT66 for AF.

That explains it, but not why they all seemed to be made in the USSR ?

Buck Taylor 25th October 2019 00:29

I know this is a bit off the theme, but I recall when I was R/O on a UASC K class heading for Aqaba in Jordan I think around 1986. I received an msg from the owners saying a complete crew change would take place on arrival Aqaba. It was an all Pakistani contingent that awaited us when we docked. The silver service was swept away and replaced by a large bowl of rice and a bowl of chicken curry...sign of things to come....I got the impression from the RO I was handing over to that they were manning the ship due to our incompetence!
During the handover he insisted I flash up the main transmitter (not permitted in port) as he main occupation would be making R/T calls. I done a quick QSO with GKA to placate him. When I showed him the spares locker, he declared it wasn't his business dealing with such things and that the Lecky would handle that sort of thing.
Fast forward a year and I'm in Liverpool docks on another UASC ship chatting with the Marconi technician who came on board. He told me that the ship in question had arrived in Liverpool without radars and most of the communication/navigation faulty. The entire Marconi tech team spent a week putting the faulty gear back in order before they could sail. So much for cutting costs....

Chris Wordsworth 25th October 2019 01:24

In 1970 I joined a German Hanas Line ship in the middle of the night outside the three mile zone off Cape Town. The ship would not stop so there was no official takeover of the radio room. Early next morning the captain introduced himself and wanted me to send a telegram. He said non of the equipment was working. The first box I opened when looking for spares was full of condoms. A very red faced German captain quickly left with the box saying that it belongs in the medicine chest.


All times are GMT +1. The time now is 06:55.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.