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

G6Tanuki · 20th Nov 2017, 8:49 pm

This is truly fascinating.

One question: why do you think there was no adoption of proper designed-for-VHF/UHF single-triodes like the EC93/EC94/6AM4 which had multiple cathode/grid/anode connections to minimise the degenerative inductance of the connecting leads?

And did any European VHF TV ever use a Nuvistor? I suspect not, since "DX" reception never seemed to be an issue in Europe [unlike in rural USA where the 'local' TV transmitter could be a couple of hundred miles away, giving rise to the "Yes we have television here! on tuesdays and thursdays if the wind's from the east and it's not raining!" effect].

20th Nov 2017, 8:49 pm	#5
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 14,007	Re: Introduction PCC189 in Mullard tuners? This is truly fascinating. One question: why do you think there was no adoption of proper designed-for-VHF/UHF single-triodes like the EC93/EC94/6AM4 which had multiple cathode/grid/anode connections to minimise the degenerative inductance of the connecting leads? And did any European VHF TV ever use a Nuvistor? I suspect not, since "DX" reception never seemed to be an issue in Europe [unlike in rural USA where the 'local' TV transmitter could be a couple of hundred miles away, giving rise to the "Yes we have television here! on tuesdays and thursdays if the wind's from the east and it's not raining!" effect].