UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - External Teletext Decoder. Is there such a thing?

Graham G3ZVT · 11th Jan 2019, 11:12 pm

If I remember correctly, the Television magazine design cut a lot of corners, monochrome graphics, and pages selected by DIP switches. There was one built into a set at the Granada TV Rentals training department in Bedford, and was the first Teletext set I played with.
The Wireless World design by comparison was full spec for the time, but I suppose when the Broadcast Teletext specification was changed with the inclusion of Double height characters etc these too would have been rendered useless, as indeed the commercial Texas Instruments (TIFax) decoder fitted to the first Salora TT set was rendered useless.

<Edit> Correction: Thumb-wheel switches not DIP switches.

11th Jan 2019, 11:12 pm	#19
Graham G3ZVT Dekatron Join Date: May 2010 Location: Greater Manchester, UK. Posts: 18,711	Re: External Teletext Decoder. Is there such a thing? If I remember correctly, the Television magazine design cut a lot of corners, monochrome graphics, and pages selected by DIP switches. There was one built into a set at the Granada TV Rentals training department in Bedford, and was the first Teletext set I played with. The Wireless World design by comparison was full spec for the time, but I suppose when the Broadcast Teletext specification was changed with the inclusion of Double height characters etc these too would have been rendered useless, as indeed the commercial Texas Instruments (TIFax) decoder fitted to the first Salora TT set was rendered useless. <Edit> Correction: Thumb-wheel switches not DIP switches. __________________ -- Graham. G3ZVT Last edited by Graham G3ZVT; 11th Jan 2019 at 11:19 pm. Reason: re-read Mike's post.