1944 C-15A-Wire-5 Restoration

[Chris Suslowicz]

Originally Posted by David Dunlop

Posts 592/593 is a VERY hard to find RCA AR88 Loudspeaker. It is only rated at 2.5 Ohms. This was a late production run for Canadian and British Contracts as it had the Pocket Watch Holder predrilled and capped off so one could be added if needed. Earlier versions lacked that feature. The AR88 Series of receivers were a very highly regarded Intelligence Gathering piece of kit still in use in remote northern areas of Canada well into the Cold War Era.

You would be better off sticking with the Gunnery Speaker designed for the 19-Set/Tannoy System.

David

Control Unit 190 (as used in the Sexton 25pdr SP Gun installation) is intended to drive a Tannoy speaker (with transformer) direct, so that's probably the way to go - the circuit diagram should exist in one of the EMERs. (FZ256/3 has the exploded view but not the circuit diagram of the 190 box - it's possible they used the IC amplifier as a driver for the speaker rather than use the 6B8 'A' set output stage.)

Best regards,
Chris.

Chris.

[rob love]

Do you have those artillery speakers Robert? If not, they are somewhat common out this way....I think I saw a few sets at my favorite surplus store.



Personally, I am looking for the control unit.

[Robert Bergeron]

Thank you again David . Your contributions are very appreciated . A spook Leitrim / Alert / Masset speaker , interesting . Chris , i thought of removing that Masonite sheet to copy it just this afternoon . We had that thought almost at the same time . It would indeed be important information to save .Rob , i don’t have them and i would appreciate any help getting those artillery speakers . I am more and more inclined to make the truck out as an artillery command post anyway . Bruce i can’t wait to put my hands on those carriers . This is starting to look like a group effort men .

[Robert Bergeron]

Hole patterns for undetermined carriers . Underneath this Masonite sheet i found a single piece of jointed plank . I had to look twice because i did not believe my eyes . It was 1 inch thick . I saw pencil marks where it was cut to size . A single piece of plank ! It was in perfect condition so i did not have to replace it with plywood .

[Robert Bergeron]

Hole patterns for the two sets of rubber feet on the left of the No 23 carrier . Notice the numerous other hole patterns .

[Robert Bergeron]

Found the measurements to install the mountings carrier No 1. So ,from the back of the table near the wall , the first hole is 1 5/8 inch . The second hole is 3 3/4 inch from that one , The third one 3 3/8 from it and the forth 3 3/4 inch from that one . Repeat 34 3/4 inch to the other side . The instructions talk of 5/16 holes to accommodate 1/4 inch bolts .

[Robert Bergeron]

Here is the reference to the holes in the table of the wireless truck .

[Robert Bergeron]

Source of the information

[Robert Bergeron]

Detailed view of the mountings carrier no1 setup.

[Robert Bergeron]

General view . The radio is mounted on the Carrier No 23 . It consists of a large wooden plank with handles . It is lowered on the mountings No 1 and locked in place on the wireless table . If the radio is needed outside the box , you unlock the mountings and carry away the set .The carrier is quite complicated and made of many parts !

[Robert Bergeron]

Here we have a very nice shot under Reg Hodgson’s table . We clearly see the doubler from the mountings No 1 . Photo credit Super Dave Good

[Robert Bergeron]

View of the locking mechanism of the mounting .Photo credit Super Dave

[Robert Bergeron]

Larger view of the carrier and mounting on the left side . We clearly see Reg is missing the long front flat iron on the whole front of the table . Photo credit Super Dave . Q : What goes into that drawer under and to the left of the table ? Why is it locked ? Code books ?

[Robert Bergeron]

Installed a proper bussbar today : Pure copper flat 1 1/2 inch wide, 1/4 inch thick and 56 inches long , like the original .

[Robert Bergeron]

This is a diagram of the small drawer under the wireless table made by David Good .David called it a map table i would say it’s a writing table to jot down outbound / inbound messages . Could someone post detailed pictures of this drawer in the open position please ? I am going to try to reproduce it . Also details of the white octogonal piece , it looks like a handle to pull the table out . Thanks . Photo credit : Some by David Good and some by Bruce Parker

[Robert Bergeron]

This is the drawer to the left of the WS table . It is deeper and locks for code books maybe ? Found the slot under the edge of the table for the locking bar . Detailed pictures please someone ? On Bruce ´s picture in b & W i see Masonite on top of that table . Masonite seems logical because that’s what covers both the cypher clerk and the wireless tables. Thanks. Photo credit David Good. PS : I had a small electrical fire in the control panel this afternoon . No damage done . A wayward bolt shorted the 12 V supply to the interior lights before the fuse as i was testing them . Smoke was coming out of the conduits ....I pulled the cables from the batteries so fast i could not believe it.

[Robert Bergeron]

Mountings , carrier no 1 installed at last ! Thanks George, Bruce & Jordan .

[Robert Bergeron]

No 23 Carrier and No 19 set secured in carriers , mounting No 1 on the original wireless table .

[Robert Bergeron]

A closer look of the mounting and locking mechanism . BTW : This WS No 19 set is in full operational condition . A special thanks to Jon Skagfeld .

[Robert Bergeron]

A while back our friend and contributor David D . posted about red insulators for the copper buss bar . Does anyone have pictures of these please ?

[Gord Falk]

My wireless box uses the insulators as shown in the pictures. There are 5 of the slightly longer ones used on the shorter top buss bar and 6 insulators used on the lower lower buss bar. They are attached using a 1.8 inch panhead slotted screw passing though the buss bar, insulator and screwing into the wood paneling. My guess they are either of hard rubber or ceramic.

Gord

[Robert Bergeron]

Awesome Gord ! Thanks for that . That resolves a mistery . What about the copper buss bar isolators ? That one is quite heavy . I suppose the isolators are beefier ?

[Robert Bergeron]

View of the copper buss bar , the common ground for the negative side of the generators , batteries and radio power feed .

[Gord Falk]

The insulators on my cadaver wireless box are almost identical for the long buss bar and shorter buss bar. I believe the wiring in the wireless box has not been modified. Gord





(picture attached upside down)

[Robert Bergeron]

Let’s see if this helps. Fabulous Gord ! Now tell us about the lower buss bar going along the front wall under the wireless table please . How far left does it go ? I love that cadaver box , it gives us a lot of interesting , useful,
interesting information !

[Robert Bergeron]

Our friend Gord Falk took many more interesting pictures. Thanks Gord ! I see many little details that are very useful. For example the buss bar is grounded to the metal floor under the wireless table . There are so many questions answered wow !Awesome Gord !

[Robert Bergeron]

OK, this is not a wireless tread but it’s the restoration of a wireless TRUCK. In that truck one of the options was the installation of an amplified set . Look what i found today in a heated shed not to far from home ....complete with inspection tags, all connectors and racks ?

[Robert Bergeron]

First time i see Canada / UK inspection Board tags on a wireless .

[Robert Bergeron]

Complete with the rare table / rack .

[Robert Bergeron]

So i found this No 19 HP set configured for a wireless 5 truck . Everything works on 110 V . The No 19 set on the bottom is fed 110 V from the Onan generator through the rectifier . I even found the fittings and gaskets for the antenna wells in the roof of the truck in the boxes .