[Amps] Can someone ID this tube and its use ?

[John Lyles]

My memory agrees with Carl's memory, although I was not around in the early 50s to know first hand. But I have seen Y-tubes that are quite old in various systems. Also, they still sell Y tubes. 

 Jim, I think someone at Continental was stretching things to say the Y-series of part numbers were due to Tom Y. Tom was at RCA during the 1950s. He is indeed a tube professional, having worked on design of many large tubes for them. Just my guess though. Someone should ask Tom at the upcoming NAB, he is usually around the Eimac guys or Continental. I always enjoyed talking with him about tubes. The one that I use daily here is a Burle 7835 triode, 3 MW output at 200 MHz, pulsed. Guess who was part of the design team at RCA in the mid 50's?  

RCA made A-series tubes which were developmental numbers. 

73
John
K5PRO
 
-----Original message-----
From: "Carl" km1h at jeremy.mv.com
Date: Thu,  2 Apr 2009 08:14:48 -0700
To: "Jim Tonne" Tonne at Comcast.net
Subject: Re: [Amps] Can someone ID this tube and its use ?

> I thought Y tubes go back to the 50's.
> 
> Carl
> KM1H
> 
> 
> ----- Original Message ----- 
> From: "Jim Tonne" <Tonne at Comcast.net>
> To: <jtml at vla.com>; <amps at contesting.com>
> Sent: Thursday, April 02, 2009 9:44 AM
> Subject: Re: [Amps] Can someone ID this tube and its use ?
> 
> 
> >
> > John Lyles wrote in part:
> >
> >> Jim Tonne, are you sure about Tom Yingst? He was at RCA/Lancaster for
> >> years
> >
> > That's what I was told while I was at Continental.
> > The year was probaby 1986 or 1987.  He was (is)
> > apparently a true tube guru.
> >
> > - JimT