25-07-2018, 08:23 PM
David, welcome to GVR. Frank's Hedghog is an impressive design, showing that it's possible to achieve professional standard results with fairly limited resources and a lot of perseverance.
How have you used the R-Pi to generate 405 signals?
I'm susrprised I can't find a Trader sheet for the TMB272 but it's in the 1956/57 volume of R&TVS. At least that's what the cumulative index says. My copies are packed away at the moment so I can't check.
The TMB272 is unique for that era as a mains/battery portable. It also has an earthed chassis which makes it relatively safe to work on. Due to the earthed chassis, compact design and 12V capability the BBC modified them to use as low cost video monitors. Especially for OB use. The power input connector is rare. If you have one with your set you are lucky.
How have you used the R-Pi to generate 405 signals?
I'm susrprised I can't find a Trader sheet for the TMB272 but it's in the 1956/57 volume of R&TVS. At least that's what the cumulative index says. My copies are packed away at the moment so I can't check.
The TMB272 is unique for that era as a mains/battery portable. It also has an earthed chassis which makes it relatively safe to work on. Due to the earthed chassis, compact design and 12V capability the BBC modified them to use as low cost video monitors. Especially for OB use. The power input connector is rare. If you have one with your set you are lucky.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
