CRT Clock Schematic?

I was digging around my electronics cabinet and found an old Olympus Pocket TV. Since the Digital Conversion has rendered analog TV obsolete, I was hoping to turn it into a Falloutesque "analog" timepiece for my desk. There's a few schematics online for PIC oscilloscope clocks, but I can't seem to find one with an an RF output. Can anyone help me out please?

shabaz over 11 years ago

You could do this with a Raspberry Pi, and a thing known as a 'modulator' from old home computers.
(Google Astec UM1233 - you might get lucky if you can find one from ebay perhaps - they are very obsolete!).
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RovertScott over 11 years ago in reply to shabaz

Thanks for the assist Shabaz, I'll consider using an Astec UM1233 in my project! As for the Raspberry Pi, I guess I'll have to learn.
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shabaz over 11 years ago

Hi Rovert,

No problem! This is the type of modulator, this is a different part number, but should work too:
http://www.ebay.co.uk/itm/RF-Modulator-Audio-video-channel-3-4-/161137796804?pt=LH_DefaultDomain_0&hash=item25848fa6c4

If your TV has a 'composite' or RCA connector type video input, then you don't need the modulator, and the RPI will directly connect to it. The modulator is only needed if you wish to connect to the TV antenna input (might be labelled ANT in, or RF input or UHF input).
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