11 Set stuff

[Mike K]

This is the stuff that was on ebay in Canada a few years ago

[cletrac (RIP)]

I have three 8cwt cabs and they all have some of the grounding straps. There should be enough to end up with a complete set for the one I'm restoring. The spare chassis has the long ones that run to the back of the frame.

[cletrac (RIP)]

I was checking out the charging switchboard and I assume I'll have to fabricate one. I got quite a bit of info out of the manual. I'll have to come up with some appropriate gauges and switches. Does anybody have any better pictures or more information? or some gauges or switches?

[cletrac (RIP)]

I was looking on ebay for gauges and the like and I came up with this. It was buy it now so I did! If anyone recognizes these on ebay they go for a fair bit of money. If anyone needs a case like this I have a spare now.

[Mike K]

Originally Posted by cletrac

I was looking on ebay for gauges and the like and I came up with this. It was buy it now so I did! If anyone recognizes these on ebay they go for a fair bit of money. If anyone needs a case like this I have a spare now.

that is a 11 set test meter . nice find. was it in Aust. ?

[cletrac (RIP)]

The meter is in the UK. I've seen a few on ebay and they went for double what I paid
They give the dimensions in the manual. 12 5/8 long, 16 1/4 high and 4 1/2 deep and all metal

[cletrac (RIP)]

I wanted to get some measurements so I opened the pic in Photoshop and cropped it and made the unit's width 12.625". I found the image height then went back to the full image and made it that height. I then cropped out these four images to post here. If you download these images and print them with something like Photoshop that doesn't change the image size then you can cut them up and have a full size picture to take measurements from. Neat, eh?
The box is square and the gauges are 2 1/4" diameter.

[Tim Bell]

Originally Posted by Mike Kelly

that is a 11 set test meter . nice find. was it in Aust. ?

I thought these were standard British Army wireless Voltmeters and suitable for a whole range of radios, not specifically the WS11.

What makes it just for the WS11 please?

I have the case... looking for the meter.

Thanks

Tim

[cletrac (RIP)]

Those volt meters were made for the 11 set but their use likely continued after the 11 set wasn't used any more. The one I bought says 1943 and the 11 set had been long discontinued in the UK by then.
I got the counterpoise in the mail today. It's quite a bit smaller than I thought it was. The wires are insulated too so how does that do any grounding? You must have to push the grey end of the bobbins into the dirt.
The remote unit serial numbers go to about 18000. I'm starting to think this includes ones from the various countries since they all have the same ZA number. The remotes just went in wireless trucks and not AFVs. This means around 9000 trucks of various makes and all would likely have had charging switchboards. Does my reasoning make sense?
On the bonding straps topic they stopped a lot of static on the radio. Also, when they were using the truck itself for the aerial ground, would they not ensure better aerial functioning?

[Chris Suslowicz]

Originally Posted by Tim Bell

I thought these were standard British Army wireless Voltmeters and suitable for a whole range of radios, not specifically the WS11.

What makes it just for the WS11 please?

I have the case... looking for the meter.

Thanks

Tim

It's that well known item, the "multipurpose part" and was used with a lot of sets.

It's Voltmeter, Pocket, 250 Volt, No.2 ZA.7372 and the matching case is ZA.7369.
They were standard issue for testing HT and LT batteries, plus valve electrode voltages on sets such as the R107 that has a test panel fitted to the front. (Also for general faultfinding on sets like the R109.) They are not a particularly brilliant meter for this purpose, having a sensitivity of 500 ohms per volt, and at one point there was a shortage of suitable meter movements which led to the issue of the Voltmeter. Pocket, 250 Volt No.3 with 350 ohms per volt sensitivity, and correction tables for various working instructions with the corresponding (lower, due to the extra circuit load) "nominal" readings when testing the set.

They turn up at amateur radio rallies fairly regularly in the UK, and tend to be dismissed as "useless junk" and are therefore cheap. Unfortunately the plastic (celluloid?) windows tend to degrade and make it difficult to use - though it's not difficult to replace them with a piece of sheet perspex/plexiglas of suitable thickness.

Chris

[Mike K]

Originally Posted by cletrac

I was checking out the charging switchboard and I assume I'll have to fabricate one. I got quite a bit of info out of the manual. I'll have to come up with some appropriate gauges and switches. Does anybody have any better pictures or more information? or some gauges or switches?

Thats about all the information we have . At least we have a circuit to copy .

I think Rory in the UK made one for his PU, he guessed the dimensions but the results look good .