[GreenKeys] Important historical website...

[Roy Morgan]

On Feb 24, 2009, at 8:56 PM, Don Robert House wrote:

> Thanks and a tip o' the white hat to Jim Harvey, for this site...
>
> <http://massis.lcs.mit.edu/telecom-archives/archives/technical/western-union-tech-review 
> >

The July '51 issue is dedicated to marine telegraph cable repeaters.   
It tells in some detail how a repeater is made and the performance  
benefit it has.  The repeater is much bigger than a breadbox, and  
lives at 100 to 200 fathoms.  The thing is filled with oil to reduce  
the need to have a housing sealed against the sea pressures of that  
depth.

I did not notice what tube types were used, but WE used to make the  
world's finest and longest lasting vacuum tubes.

Roy


Roy Morgan
k1lky at earthlink.net
529 Cobb St.
Groton NY, 13073