Hello Wolf!

The "3Cm" also was known as "Poströhre" and was commonly used in wire
based transmission equipment such as amplifiers. When I entered this
branch in the beginning of the 80's, there was still a lot of analogue
"tube"-equipment in use, beside fibre links for PDH-Systems.

The tube-area for telecommunication over wire in Austria ended in the
late 90's when the last "Z12"-Systems (BW52 = 1952) were taken out of
Service. So the design survived more than 40 years.

73
OE3GHB
Gerhard



Am Montag, den 30.05.2011, 17:57 +0200 schrieb wolf_dl4yhf:
> Hi Gerhard,
> 
> About the C3M..
> > Do you think a C3M-tube would be suitable? I have got plenty of
> > them.....
> >
> "Weitverkehrsröhre" (found at a radio museum) ... long distance 
> communications tube ... sounds like a "must have" for DX ;o)
> 
> Cheers,
>     Wolf  (still on the old BF245 for rx.. , hi )
> 
>