Shed Find

[Dave Mills]

Just got onto this Radio gear through word of mouth in my home town. I am not a radio person but felt that this is to good to let go to the tip so I am now the new owner.

I will upload a series of photos.

Cheers,

Dave.

[Dave Mills]

Still more to come......

[Dave Mills]

And more.....

[Dave Mills]

Still more to come....

[Dave Mills]

And more....

[Dave Mills]

Still more.....

[Chris Suslowicz]

Originally Posted by Dave Mills

And more....

The still-wrapped J1 box is the control unit for almost any of the vehicle-mounted sets. It's the same as the large one on the tray to its immediate right.

The tray on the right (with a J1 and an 'O' box fitted (the latter is incorrect, I think) is the 'top tray' for a C11/R210 setup, and normally carries the J1 box and an LT (power distribution) box for the setup.

The J1 box does all the audio switching and headset feeds for a 'one set' vehicle installation (it provides a couple of headset connections and 12-way feed for other audio distribution (C = Crew, D = Driver) boxes), and contains the very important Voltage Control Relay for the harness - this allows the batteries to be float-charged from the vehicle alternator and tells the set when to switch to the 'low voltage' setting as the batteries run down. (The default is 28-30 volt input to protect the valve heaters, with the VCR in play the set will continue to operate well with an input voltage down around 20-22 volts).

The tubular handles on the top trays are a lesson learned from WW2. They are so that you can remove kit from a vehicle easily: the bottom tray remains in place, you simply disconnect the power, harness and audio cables, undo the clamps holding the set and supply unit to the bottom tray, and lift the entire assembly out as a single unit. (Without the danger of the thing turning turtle on you as was a favourite with the WS19 on the demountable carriers (3, 23 or 25).)

Chris.

[Chris Suslowicz]

Originally Posted by Dave Mills

Still more to come....

The CPRC-26 was also known as the SR A40 in UK usage.

That cable drum is "Reels, Cable, No.4" and is a split drum originally used with "Assault cable No.2" a pvc insulated 7 steel 1 copper stranded single wire supplied in hessian-wrapped 'doughnuts'. It could (supposedly) be air-dropped without a parachute. The wrapping would be removed, then the doughnut inserted into the drum so that the wire ends were accessible, the drum tightened up and the string ties removed, then "off you went". The matching "Apparatus Cable Laying No.10" (I think) is an aluminium hook that goes over your arm (drum hanging below on a spindle with a captive locking pin). They are a very useful drum and remained in service because of that, long after the assault cable disappeared into history.

Chris.