UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Homemade Teletext decoder (based on Mullard Module)

1980s_john · 13th Dec 2020, 6:26 pm

Hi,
Clearing out a cupboard I came across a Teletext decoder box I put together in the late 80s based on a Mullard VM 6101 module. The module has these 4 ICs:

SAA5020 Teletext Timing Chain Circuit
SAA5030 Teletext Video Processor
SAA5040A Teletext Control and Data
SAA5050 Teletext Character Generator

I gutted a push button telephone to make the keyboard, and it plugged the box into a Grundig portable 14" TV (long gone) which had a SCART socket plus a DIN socket for fast video blanking.

I'm sure I had the datasheet for the module but I can't find it, can anyone oblige please?

Thanks,
John

PS As to generating Teletext, I think last time I used a VCR with some suitable recordings off-air.

13th Dec 2020, 6:26 pm	#1
1980s_john Tetrode Join Date: Apr 2005 Location: Ipswich, Suffolk, UK. Posts: 59	Homemade Teletext decoder (based on Mullard Module) Hi, Clearing out a cupboard I came across a Teletext decoder box I put together in the late 80s based on a Mullard VM 6101 module. The module has these 4 ICs: SAA5020 Teletext Timing Chain Circuit SAA5030 Teletext Video Processor SAA5040A Teletext Control and Data SAA5050 Teletext Character Generator I gutted a push button telephone to make the keyboard, and it plugged the box into a Grundig portable 14" TV (long gone) which had a SCART socket plus a DIN socket for fast video blanking. I'm sure I had the datasheet for the module but I can't find it, can anyone oblige please? Thanks, John PS As to generating Teletext, I think last time I used a VCR with some suitable recordings off-air.