06-08-2008, 10:13 PM
The tubes you will be looking for will be marked 1A7GT, 1N5GT, and so on. Originally Originally, those tubes were supplied in tall glass sizes, but were quickly replaced with the standard "GT" size tubes. The "E" suffix was used on Philco's tubes in export or non-US manufacture sets, and has no significance today.
In fact, if you simply ask for the type, with no suffix, you'll get what you want.
In fact, if you simply ask for the type, with no suffix, you'll get what you want.
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