Radio set No 11 power supply leads.

[Chris Suslowicz]

Originally Posted by kevin powles

Mike, it appears The Canadian 11 set tray is All Alluminum, I have talked to few guys in Canada who have confirmed this. Now I have a delima to make an Australian version or Canadaian,? I have a volunteer worker at the Royal Signals museum sending me some pics of one in a glass case there, he doesn't know the country if manufacture but he is going to find out, if British we might be able to confirm the British manufacture method for the tray. Here a pic of it.

The British one will be steel.

Britain had a steel industry (also Dunlop and similar rubber companies), Canada had/has shedloads (technical term) of hydroelectric power, aluminium smelters (due to cheap electricity) and forests. This caused interesting variations in the materials used for WW2 hardware. British made Telephone Sets D Mk. V have steel cases, Canadian ones are Aluminium. The British made Aerial Base No.8, Mounting No.3 is a thick rubber moulding (later ones were a steel donut with rubber gaskets), the Canadian one is plywood with cork gaskets. The "Piece, Packing" for the WS19 variometer can be Bakelite (UK), Rubber or wooden (Canadian), pressed steel (US) or cast aluminium (post-WW2 Italian).

I'd imagine the Australian carrier is also steel, since they made the WS19 aerial mount N0.3 (the very tall one) out of steel with a steel spring where everyone else used rubber and aluminium.

It's all down to availability of materials at the time.

Chris.

[Mrs Vampire]

Chris the 12V plug

[kevin powles]

Gina,
Do you still want a plug casting?, I am getting one made for Philip. I don't need one so the guy is only making one, but if you need one it will bring the price down. I can do all the machining and hole tapping. It will come without brass inserts but I have a drawing for making these.

Kevin.

[Chris Suslowicz]

The 2-pin plugs should not be that difficult to find, since they were a "multi purpose part" used on a variety of sets (WS11, WS19 RF amplifier, R107, DC-AC converter for the Typex machine, etc.) and were still current issue in the Larkspur era.

The 3-pin connectors are more difficult, despite being used on the R107 (muting plug) and a lot of Line kit (mostly carrier telephone stuff). (Anyone with an R107 needs one of these to blank off the muting connector which has 250 volts on the exposed pins!)

Some Dutch eBay sellers had the 2-pin version as WS19HP power cables, and they may still be around somewhere.

The moulded replacements for the "domino" sockets are a work of art, but it would be much better if the contacts could be include at moulding time - they're only a brass pin with a central hole (tapped at one end) and a groove with knurled bottom to retain them in the body. I don't know how complex the moulds are, but it should be possible to incorporate the contacts before filling the mould.

Chris.

[Chris Suslowicz]

Originally Posted by Gina Vampire

Chris the 12V plug

OK, on the assumption it's the same as the WS19HP one, I have a NOS example and will calculate you a postage cost tomorrow (I hope).

Chris.

[Mrs Vampire]

Hi Kevin if Chris is good to send me one then I am ok .

Hey Chris send me a Pm as to costs... do you have a pay pal ??

[universalgrl]

Any chance of getting the power plug and socket made for my 38 AFV set. Some one hardwired a cable inside the radio and took out the socket. I think the plug is identical to the WS19HP 12 V plug but about half the size.

[Chris Suslowicz]

Originally Posted by universalgrl

Any chance of getting the power plug and socket made for my 38 AFV set. Some one hardwired a cable inside the radio and took out the socket. I think the plug is identical to the WS19HP 12 V plug but about half the size.

It's rather smaller than that. It's the one used for the "Control" lead on the WS19HP amplifier (where it's connected to the relay coil and is in series with the WS19 HT2). The same connector is an even more "multi purpose part" and was used on the WS 38, 31 and 88 AFV supply units, the R109 and supply units for the WS22 and PCR series receivers.

The large one is ZA.6403 (and I've just discovered my spare one is a shorting link, which explains its use in the Larkspur test boxes: presumably there's a lead for use with a DC ammeter that replaces it so you can measure the set input current via that plug/socket and the applied voltage via a pair of banana sockets on the test box. This probably means I ought to get more of them when I find some!)

The small one has ZA.32806 on it, which makes it well post-WW2 and probably for the WS31 or WS88 AFV supply unit/LF amplifier. They appear to have had a thing about renumbering things after WW2. There _will_ be earlier examples with a lower number.

Chris.

[kevin powles]

Gents, Mostly finished the Canadian pattern Aluminum tray, just got to put a couple of mystery holes in and get dimensions for the top mounted tray if anyone has dimensions from an original. Also there is another item that sits on top to make a small mount for.

Kevin.

[kevin powles]

Gents, I have just had some of the 2 pin plugs made, I will post up some pics in the next few days, these have a pigment mixed in with the moulded plastic to match the Bakelite 'blackness' exactly.

Let me know if you need any, I have one set aside for Phil, Gina you need one now?.

Chris which radio do these also fit as others might want them.

I will machine drill the pin holes and tap the lid screw holes, you will have to add the lid gasket and brass inserts, these cant be added at the manufacture stage as the alignment is critical, weather they were moulded in originally I'm not sure.

Kevin.

[Mrs Vampire]

yep book me down for one