[Boatanchors] tube id

[Todd, KA1KAQ]

On 5/8/06, telegrapher at att.net <telegrapher at att.net> wrote:
> Does anyone know what the purpose or meaning was for the RCA tubes that
> are red metal?  I see some on the auction place and i have a couple here
> but don't know what the significance of being "red" meant.

Hi Larry -

I can't remember exactly, but I seem to recall that the red tubes were
a premium or industrial grade, along the lines of the 5-star tubes
they made. It's been a while so I don't remember for certain, you can
probably google something up about it. I have one in my tube
collection, it adds color and contrast.

73, Todd/'Boomer'  KA1KAQ