[Milsurplus] Re metal tubes

[Al Klase]

On 2/17/2010 8:34 PM, jcoward5452 at aol.com wrote:
> As you all know,inside that metal tube is a glass tube.The metal is for RF and Noise shielding...........
>    
Actually, that's not the case, except for some non-RCA products that 
were leveraging existing technology or ducking patent issues.  Just take 
a hack saw to an RCA metal tube, and you'll see what I mean.  The only 
glass is in the seals where the wires exit the tube.

Al

-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/