03-11-2016, 11:26 AM
At Ally Pally yesterday afternoon. The photo shows Lily, the 92 year old lady who appeared on TV in 1936 and also in last night's programme. Also shown are Russell's Marconi 702 and Iain Baird.
The 702 came from the Bennett-Levy auction at Bonhams a few years ago. The CRT is the best pre-war 12" EMI I have seen. This set was restored by Mike Barker. It needed several transformers and chokes rewinding. The 405/240 switch has been replaced, along with the the relevant components that had been removed. It was common practice for the 240 line capability to be removed from those few sets that had it originally. The set now works very well on both 240 and 405. The 240 line pictures were supplied by an early Aurora multistandard converter that predates the SCRF and World converters. This converter has no modulator so an external modulator (actually part of a Dinosaur converter) was used.
For those who are wondering, making 240 lines 25Hz progressive scan from 625 50Hz interlaced needs a framestore. The SCRF converter doesn't have one.
The 702 attracted a lot of attention. It was running for most of the time from about 2pm to 10pm without a hiccup.
The 702 came from the Bennett-Levy auction at Bonhams a few years ago. The CRT is the best pre-war 12" EMI I have seen. This set was restored by Mike Barker. It needed several transformers and chokes rewinding. The 405/240 switch has been replaced, along with the the relevant components that had been removed. It was common practice for the 240 line capability to be removed from those few sets that had it originally. The set now works very well on both 240 and 405. The 240 line pictures were supplied by an early Aurora multistandard converter that predates the SCRF and World converters. This converter has no modulator so an external modulator (actually part of a Dinosaur converter) was used.
For those who are wondering, making 240 lines 25Hz progressive scan from 625 50Hz interlaced needs a framestore. The SCRF converter doesn't have one.
The 702 attracted a lot of attention. It was running for most of the time from about 2pm to 10pm without a hiccup.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
