I found a model of the receiving end of a Baird Televisor in the rubbish at my work (Univ of Strathclyde) and could do with some help.
I mentioned it here:
http://brassgoggles.co.uk/forum/index.php/topic,9398.msg790600.html#msg790600and the photos are:

General shot

which shows the essential Bairdian spiral of holes in the discs

Display case which tells me that this was made for the 1990 "Jam, socks and television" exhibition sponsored by British Telecom.
Key queries needing help:
1. I think this model is missing some bits - any ideas what?
2. I have only got the Receiver - so obviously I need the Transmitter too - are there any modern plans for such a model? I have seen the old ones in Popular Mechanics.
3. Has anyone made a model Televisor and can tell me how straightforward it might be?
4. Once you have the two bits, how do they interact and do you need a broadcasting licence?