A visit to WLW in Cinncinati At one time the biggest commercial AM station in the US. In 1932 they built a 500 Kilowatt(that's 1/2 a megawatt) AM transmitter. It took more than a dozen people simultaneously to operate it.
There's some big tubes in here.
http://www.youtube.com/watch?feature=player_embedded&v=CbHjcwIoTiY
A nice bit about the Audio Transformer about 27 mins in.
15 Tonne, 180 Kilowatt RMS audio from 50Hz to 10Khz.
and there were 2 of them. That's one mother of an Audio amp.
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Big Transmitters and Tubes
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Big Transmitters and Tubes
Alastair Reynolds
Broadcast Radio Engineer
Master of the Dark Arts (Broadcast)
Broadcast Radio Engineer
Master of the Dark Arts (Broadcast)
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Alastair Reynolds - TRM Endorsed
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- Joined: Mon Dec 04, 2006 1:51 pm
- Location: Sydney
Re: Big Transmitters and Tubes
Hmmmm. Three phase filaments!
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rob - TRM Endorsed
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Re: Big Transmitters and Tubes
I like the pics of the Generator sets for the filaments. 3 x 33V DC, 1500 amp generators just to run the filaments, these were driven by AC Motors as trying to rectify 4500 amps would have been pretty tricky back then
Alastair Reynolds
Broadcast Radio Engineer
Master of the Dark Arts (Broadcast)
Broadcast Radio Engineer
Master of the Dark Arts (Broadcast)
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Alastair Reynolds - TRM Endorsed
- Posts: 475
- Joined: Mon Dec 04, 2006 1:51 pm
- Location: Sydney
3 posts
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