Wireless Set No 52 Canadian Production

[David Dunlop]

There seems to have been a lot of communications activity around this time regarding the 52-Set.

Here are some files related to the Flick Drives.

David

[David Dunlop]

As we know, the early Dynamotors in the Supply Unit of the 52-Set had some issues.

Here is some supporting files regarding the problem and the modifications implemented until the manufacturer could deliver the upgraded units that finally resolved the problems.

David

[David Dunlop]

Hello Bruce.

I went on line this morning and had a look at Microfilm Reel C-1587. it appears identical, warts and all, to the copy Chris obtained years back. Lots of unreadable pages. Makes one wonder what the point of attempting to save ones Heritage is, if what you save cannot ever be referenced/used by the future generations. My thought is the microfilm project was implemented to get vaster access to the archive material. Hundreds of film prints could be made and distributed for viewing as opposed to a single original only available to one researcher at a time.

Also makes me wonder if the paperwork went back into long term storage after being microfilmed in the 1950's, or was destroyed. Be nice if still in storage as the possibility of being able to pull illegible documents and re-image them would still be a possibility.

David

[David Dunlop]

Jacques has been busy during lockdown, wading through more microfilm reels. This time around, what he has been reviewing has all been from 1943 and all the information located so far has been in reference to the then identified CMC Wireless Set No. 9 Mk II Canadian.

He has assembled seven more documents from what he has found to date. Four of these have dates on them, three are unknown but are likely from 1943 because of the names of the set being referred to in them.

This first one attached is 'Preliminary Information' and is undated.

David

[David Dunlop]

This second document is dated 16 August 1943 and related to the HI POWER LOCK being designed into the Sender.

David

[David Dunlop]

This third document is an interesting one. It is also dated 16 August 1943 and relates to the design of an AC Power Supply being designed by CMC for the WS. No. 9 Mk II.

Some more documents to follow later.

David

[David Dunlop]

This is the fourth document of the recent batch assembled by Jacques Fortin. It is identified as MEMORANDUM No. 8 and dated 27 October 1943.

At the very beginning, this memorandum lists five members of Canadian Marconi Company in attendance at the relevant meeting concerning the Wireless Set No. 9 Mk II Cdn. No titles provided but if anyone can identify who they were, it would be really interesting to find out who was actually there from CMC.

The other tidbit can be found in the MECHANICAL DETAIL Section of the memo. There, it states that a small compartment will be fitted to the top of the Carrier to accommodate the Instruction Manual and Tuning Chart.

This is the first time I have ever heard of the small metal chart being included here. I went and found mine to try it out. Width is perfect, but length if one half inch too long. this one has the 12 holes punched around the perimeter of it for mounting in a location close at hand to the wireless set. If the holes were not punched in it, it appears it could be shortened enough to fit the compartment.

As usual, you find a new bit of information, and more questions pop up. Was there an earlier version of the metal tuning chart with no holes that fit into the compartment with the manual? Did the manual originally not have a foldout tuning chart inside it? Given the set came with a rain cover for the front of the Carrier, there is a certain logic to having a metal chart to avoid getting the manual wet needlessly.Did they switch to a slightly longer metal chart to allow it to be readily mounted? Interesting mystery.

David