#1
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Camera Viewfinder ?
Does anybody know what type of Marconi Television Boardcast Camera Had a
Marconi Viewfinder 7251A (8 1/2inch) used on them ? It a Stand alone type (Valve) Last edited by XDCAM; 03-15-2013 at 06:12 PM. |
#2
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Hi
Most Marconi cameras of the early valve era had 5" round viewfinders, the later MkIV camera had a 7" viewfinder, but this was built into the camera body and not removable. If it is defiantly a Marconi viewfinder it may be from one of the early colour cameras of the "coffin" design with 3 x 3" I.O. tubes. It could be you have a rare item there, some pictures would be good for identification purposes. There were 3 generations of Marconi I.O. colour cameras. All had larger viewfinders to match the large size of the camera. |
#3
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Thanks Brian
Thanks Brian The CRT has a Broken Neck, and its bent (I Saved it out of a Skip ).Here are the Pics Brian.
Last edited by XDCAM; 03-12-2013 at 03:40 PM. |
#4
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Here are the pictures .
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#5
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Thanks for the pictures, it is now I identified as the viewfinder for the Marconi V3310 colour vidicon camera. see picture 1. I think it was also used on the bigger IO colour camera picture 2.
I do have a V3310 in my collection, or the be more accurate the remains of one. It is quite incomplete. Your viewfinder is a rare Item and the first one I have seen of that type. It is mostly stand alone, accepting a video input, Mains power for the heaters and 250v HT from the camera. I don't think the tube was anything special, Marconi would have selected a standard tube from the domestic TV range. I wonder what happened to the rest of the camera? I have found the circuit for it http://www.tvcameramuseum.org/pdfs/m...1a-circuit.pdf if you want a look, it's quite straightforward. May I use your pictures of it on the museum site please. contact me directly with full resolution pictures or extra pictures? |
Audiokarma |
#6
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Serial number on viewfinder
Did anyone notice that viewfinder serial number?? It is serial number "1". They would usually start out with "101 or 1001".
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julian |
#7
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It is SN 101 on the plate !
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