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Focus Diode · 19th May 2018, 10:12 am

Simon's right but this does appear to be a late model with the green PCB so presumably the modification will already have been done.

The control was originally a 1M pre-set with the feed resistor being 330K. They were changed to 2M2 and 680K respectively.

Pre-sets themselves are worth a mention. They seem to be hard to obtain nowadays unless they're the plastic bodied black and white types. They never seem to last very long in older valved equipment unless I've been unlucky.

A word about the ETP-1; it was rightly criticised for lacking a circle. The E-W castellations were also too wide when compared to TC F and the Philips PM5544.

Nevertheless the image on 1100 Man's set is well done!

19th May 2018, 10:12 am	#6
Focus Diode Octode Join Date: Jan 2006 Location: Borough of Gateshead, UK. Posts: 1,420	Re: Ultra 6823 (Thorn 1500 chassis) Simon's right but this does appear to be a late model with the green PCB so presumably the modification will already have been done. The control was originally a 1M pre-set with the feed resistor being 330K. They were changed to 2M2 and 680K respectively. Pre-sets themselves are worth a mention. They seem to be hard to obtain nowadays unless they're the plastic bodied black and white types. They never seem to last very long in older valved equipment unless I've been unlucky. A word about the ETP-1; it was rightly criticised for lacking a circle. The E-W castellations were also too wide when compared to TC F and the Philips PM5544. Nevertheless the image on 1100 Man's set is well done!