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Antique Gas Engine Discussion

Some sort of switch?


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  #1  
Old 09-01-2005, 08:48:43 PM
Darryl Boyd's Avatar
Darryl Boyd Darryl Boyd is offline
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Default Some sort of switch?

I just know someone here might know what this is.

http://www.crystalradio.net/temp/switch.jpg

Darryl Boyd
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Old 09-01-2005, 09:34:27 PM
Mac Leod Mac Leod is offline
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Default Re: Some sort of switch?

most interesting...dont know though

Mac Leod
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Old 09-01-2005, 11:01:06 PM
RHudson RHudson is offline
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Default Re: Some sort of switch?

Well, this is just a guess....is it an antenna switch? if so the carbon blocks are a spark jump gap. the right carbon block is grounded. the left block connects to an antenna lead in. the knife switch would be opened when the radio was not in use. lightning strikes would tend to jump the carbon gap to ground instead of burning up radio gear. thats just a guess.
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Old 09-03-2005, 12:31:24 AM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: Some sort of switch?

You have an antenna lightning arrester. A friend has one that uses 2 spark plugs attached to a commercial antenna. When the switch opened the transmitter circut, the plugs would arc from static discharge! on dry windy days, static build up would knock a man on his butt if the switch was not opened
Andrew
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