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Nicholls Set Type 48/1
Old 03-03-2018, 04:29 AM   #1
SiPo
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Default Nicholls Set Type 48/1

On communicating with Louis Meulstee regarding the Nicholls set, and who graciously provided me with further information, it is apparent that not many of these sets were made or have survived.

Although Louis did not have any manufacturing figures I was wondering if any forum member does or indeed could hazard an educated guess? By my reckoning there were 101 teams of Jeds, so that is at least 101 Jed sets made. How many of those produced were the 48/1?

There certainly appears to be more surviving examples of the 46/1 Jed set and examples of these can be found when browsing the web/books.

However, the opposite can be said of the 48/1, which could be addressed by posting surviving examples here.

Please feel free to post your 48/1 here if you are lucky enough to have one or any other pics of one you may have come across.

My example is missing a couple of parts that I would like to replace. The major missing part is the plug attachment and I am therefore very interested to see what type of plug was used to attach it to the Type 45/lll Hand Generator?
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Last edited by SiPo; 03-03-2018 at 04:47 AM.
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Old 03-03-2018, 04:34 AM   #2
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Also missing is the earth/counterpoise terminal and any pointers as to where to source a replacement would be greatly appreciated.
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Old 03-08-2018, 04:04 AM   #3
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Hello if the earth/terminal is missing it means that the big capacitor
of 0,5 uf 500v is also missing , as terminal is part of this capacitor.
If we compare a B2 tx and a 48/1 power output will be reduced
as anode voltage will be different , 500v for b2
320 v with generator 45/1,
Jedburg set were mainly used just before d day in normandy ,it
was enough to send easy messages to uk , as distance is not too far
A picture of inside 48 /1 will be interesting . Some parts are omitted
and other changed to allow the set working with 320 v in place of
500 v
Pierre
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Old 03-10-2018, 03:07 AM   #4
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Thanks Pierre.

Not knowing anything about the inner workings of radios or electronics, would the capacitor have been removed as part of the modifications or is it just missing?

The only reason I ask is that the terminal is still in situ on the 48/1 pictured in WFTW 4?
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Old 03-11-2018, 04:31 AM   #5
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Hello
If you look to wftw4 it’s capacitor c 23 connect to earth terminal
it’s not omitted , it’s missing on your set .
Look to your B2 you will see how it look
When comparing 48 and b2 schematic you wil see that on b2
They are 5 revisions last one type E mention that c34 is c23 in 1944
Pierre
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Old 03-11-2018, 07:58 AM   #6
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Thanks Pierre....clear as mud

The hunt for the missing terminal begins
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Old 04-01-2018, 02:19 AM   #7
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Bringing this thread back up.

I realise that the 48/1 is so rare that other forum members may not own one or if they do are not willing to share photos, but I am still hopeful that someone can provide a picture of the type of plug that was used to connect the set to the hand generator.
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