[Hallicrafters] 6SC7 tubes new or used wanted

[Ray Keefe]

I have often wondered about the difference between metal and glass 
versions.

What I have found is if the tube was made in both metal and glass the 
metal version would be called a 6SC7 and the glass version would be a 
6SC7 GT (Glass Tube).

Here's a link to an article from 1935 about metal vs glass tubes.
http://www.rfcafe.com/references/radio-craft/metal-vs-glass-radio-tubes-radio-craft-october-1935.htm 




On 9/14/2017 9:40 PM, Richard Knoppow wrote:
> Well, that's the definitive answer. A lot of tubes were made both ways.
>
> On 9/14/2017 6:35 PM, Jacques Fortin wrote:
>> Hi all,
>> I have some 6SC7 GT made of glass.
>> Some NOS are on sale at:
>> http://dbtubes.com/en/search?controller=search&orderby=position&orderway=des 
>>
>> c&search_query=6sc7&submit_search=
>> I'm not related to this site in any way but prices and service are good.
>>
>> 73, Jacques, VE2JFE
>
>

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