08-29-2010, 06:00 PM
Alan Douglas Wrote:58s and 2A5s could have been available from stock, when more modern tubes were reserved for military equipment.
It's possible but at the same time they were making large consoles, like the Canadian versions of the 216, 316, etc., that used the more modern loctals and octals. I should see if the set my friend had is in the Radio College of Canada manuals to find out the year, my guess is it's from around 1940-41.
Best Regards
Arran