[Heathkit] Cantenna

[wb8jkr at juno.com]

On Sat, 12 Jun 2004 16:08:52 -0500 Jim Isbell
<millenniumfalcon at cableone.net> writes:
> Questions:
> 
> 1)  What is the oil to use in a cantenna?

Mineral oil or non-pcb transformer oil.
 
> 2)  There is a vent in the top so I imagine that the oil expands, 
> how 
> full should I fill it?

 Until it covers the top of the resistor element by
about 1/4"
 
> 3)  What is the rating of the element with NO OIL?

 50 watts continuous
 
> 4)  Would circulating the oil with a pump increase the rating?

 Not really, natural convection currents do that.
 
> 5)  Can I use a plastic paint bucket or will it get too hot?

  Under normal power levels I would say yes you could use it, but
a plastic bucket is a lousy RF shield.

73,  Mark  WB8JKR
 


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