20-10-2015, 02:34 PM
Just had another dig, the Mullard DW2 is the equivalent to the Philips 1821 (see 1st link below):
http://www.g3ynh.info/valves/old/Data-Bo...V-p099.pdf
Here's the directory page for the above:
http://www.g3ynh.info/valves/old/Data-Bo...index.html
Lawrence.
http://www.g3ynh.info/valves/old/Data-Bo...V-p099.pdf
Here's the directory page for the above:
http://www.g3ynh.info/valves/old/Data-Bo...index.html
Lawrence.







