[AMPS] tube info

[John T. M. Lyles]

I was visiting Prague last week, and spent an afternoon in the Czech 
Technical Museum, which I believe was formerly a closed institution 
under the communist government. After spending a few hours with 
airplanes, railroads and motorcycles, I was surprised to discover a 
second floor telecommunications exhibit, with much sponsorship from 
Phillips, Seimens, and Tesla (the local manufacturer). They had a 
very nice wireless exhibit, both spark and CW, and had a complete 
mock up radio traffic station from early 1930s. Also, parts of two 
scanning disk televisions! And many ancient radios. I had read about 
Nipkow televisions, but to find them exhibited...! The clincher was a 
giant antenna helix from a LF station and a 75 kW and 250 kW water 
cooled tube made by Tesla. If you happen to be in the neighborhood, 
check this place out.

73
john
K5PRO

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