UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

1100 man · 19th Jul 2019, 1:42 pm

Hi Ian,
I very much doubt if any of your TV's are 405 line! It's easy to see 'VHF' and assume it's 405. Plenty of sets tune across the VHF band as lots of other parts of the world used VHF but they won't be 405.

You should easily be able to tell just by looking at the line structure & listening to the line timebase. 405 is a very course line structure when compared with 625, but the giveaway would be the 10Khz line whistle. If you can't hear it, it's probably 625.

Instead of a HH converter, all you need is a 625 line source and a VHF modulator!

Cheers
Nick

19th Jul 2019, 1:42 pm	#190
1100 man Octode Join Date: Apr 2016 Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK. Posts: 1,377	Re: Hedghog standards converter Hi Ian, I very much doubt if any of your TV's are 405 line! It's easy to see 'VHF' and assume it's 405. Plenty of sets tune across the VHF band as lots of other parts of the world used VHF but they won't be 405. You should easily be able to tell just by looking at the line structure & listening to the line timebase. 405 is a very course line structure when compared with 625, but the giveaway would be the 10Khz line whistle. If you can't hear it, it's probably 625. Instead of a HH converter, all you need is a 625 line source and a VHF modulator! Cheers Nick