(28-05-2016, 02:55 PM)AlanBeckett Wrote: The reason I asked was twofold. First, once such Dates appear in 'Print' they tend to get propagated. Second, Post-war Portables, such as the Pye 75B which was released in 1946, still used the '30' Series Octal Valves, which would seem a bit strange if B7G Valves were available 3 years earlier. It wasn't until 1949 as far as I can tell that Pye used the '91' Series Valves, a full 6 Years after they were apparently available.
Not counting the MCR-1 and it's American equivalent, what other Sets were those Valves used in before the end of WWII?
Alan
Using Radiomuseum as a starting base there were several USA manufactures making them circa 1941, eg: Crosley Commuter, Farnsworth CT59 etc.
Only British one I can find so far apart from the MRC-1 is the R209 (MK1) Reception Set circa 1945, but I haven't pinned down the start of production date.
Lawrence.







