Another Tube find

• To: tesla-at-pupman-dot-com
• Subject: Another Tube find
• From: Laser39646-at-aol-dot-com (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Mon, 05 Oct 1998 17:33:20 -0600
• Approved: terryf-at-verinet-dot-com

Hello,
I've been enjoying all the posts on this list and finally have one to
contribute. A friend gave me several tubes to experiment with and play around
with.  I would like to know what they originally were used for. He also said
most of them were defective because of a loss of power handling capabilites.
There rather small and full of a lot of interesting stuff.  They are
mostly:RAYTHEON
									RK-715B
									CRP 715B
								Western Electric
									5D21
Then i have another rather large tube with hardly any markings except: Made in
the USA..lol..No it has FTR
					F128-A its sort of rubbed off hard to read..the tube is probably 4inch in
diameter and foot long..

Thanks for the help.
mark

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