Lovely bit of kit ray.....not seen one of your vids for a while.....I worked NZ for the first time this morning with the help of my doublet antenna..... One of your vids introduced me to the fantastic Doublet quite some years ago. Thanks so much for your videos Ray.
CCT-52210 is a late production ATA transmitter, part of the Navy ATA/ARA Command Radio set, nearly identical to the Signal Corps (AAF) SCR-274-N. Early in the war it might have been used in almost any Naval aircraft, including fighters. By summer of 1943, they were being replaced in smaller aircraft by VHF command sets such as AN/ARC-1, 4 and SCR-522 (at least in Europe).
Could be 1943 found this on wikipedia "RCA announced new miniature tubes in Electronics magazine, which proved reliable. The first ones, such as the 6J6 ECC91 VHF dual triode, were introduced in 1939. The bases commonly referred to as "miniature" are the seven-pin B7G type, and the slightly later nine-pin B9A (Noval)." I remember the 88 portable 40MHz set which used direct heater B7G, i think that came out 1945? Of course i did the stupid Battery HT on the LT and blew a dozen valves in half a second! Never has a command TX but did have the command R25/ R26 and R27 receivers. they were octal base
@@g4nsj I dont know anyone who had a 88 set whom didnt blow all the valves that way at least once, after that you can give yourself OCD checking the HT LT connections ;-)
This is in a remarkable condition for its age and I was amazed at how clean it is inside, with the varicaps moving effortlessly. The lack of labelling on the front could have been due to a supply issue or they assumed a training standard was applied, regarding operational use. They must of had faith in the valve longevity too, so removing them would be a rare occurance.
Excellent stuff Ray, thanks for sharing this. It would be fascinating if you could make a project out of this to get it working, and video the work. I'm still learning, and your channel is a great source of information for me. 73's G1 VJG ( MIKE ).
Good Day Ray, have you considered doing a video on differing radio concepts for non hams? I've not yet done my foundation, but now at the young age of 56 I do go on the looney bin that is 11 metres, but I'm an avid short wave listener since my father bought me a Trio 9r59de back in 1978 when i was 10!! Now i listen SW on a kenwood R-5000 and my favourite ham band is 40m ... theres always something going on! So yes, your input and views would be interesting and worth looking at!
Thank you for sharing, Ray! Reminds me of childhood when my father used to come home with all manner of surplus equipment. Whatever happened to surplus shops....?
It looks very well made . A lot of US MOD equipment has limited labeling in case the aircraft grounded into enemy lines . I would imagine that the transmitter wouldn't be too heavy hence it's for aircraft , probably mostly constructed from aluminium ?.
Nice to see you are prepared to bleed for your art Ray🤣 Can see a redirection of an aircraft out of Shoreham like in fools and horses when this gets fired up. 😂 Does look a nice set though. Would be good if you can get some additional use from it.
@@g4nsj If i remember right? Command Rx used 250vdc HT and command TX use 500vdc on the anodes, originally provided by 28V dynamotors, but 12v ones were also available
It looks like someone modified an ARC5 transmitter which had a rotary inductor and a VFO dial. They plugged into a rack that hooked up to a dynamotor supply rail. The tubs up front were not original for sure. Domeone looks to have done a nice job but not sure how they are setting the frequency (originally the VFO capacitor was under bottom & the sheilded "do not adjust" can housed the VFO coils.
