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Haller-Cunningham Rotary Spark Gap -1913A
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Not much in demand these days, but in 1913 this was hot stuff. One kilowatt power limit, renewable zinc gaps, mounted on fibre base so it can be screwed directly to table. Adjust the 500 Hz tone with a rheostat. Made in San Francisco! Published in the August, 1913 issue of MODERN ELECTRICS.
Source: Magazine collector Steve Davis
Restoration by: magscanner
- Created on
- Sunday 14 March 2010
- Posted on
- Sunday 14 March 2010
- Tags
- amateur, spark gap, transmission, transmitter, wireless
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