[TowerTalk] LMR 600 Water-proof Feed Thrus (+ H20 proof'g) DAVIS RF Response

[Adam Shirley WJ4X]

You might be better off not sealing the polyphasers to the box. Just
make sure all the holes are on the bottom, and you'll have no problems.

Ya need a vent for moisture somewhere. The conduit from the shack will
carry cold air/warm air to that box and make it sweat. I actually
drilled a hole in the bottom of my box at the tower and installed a sink
aerator screen to keep out bugs.

73!
 -Adam
  WJ4X

On 7/31/2010 11:00 AM, jimlux wrote:

> 
> I was thinking silicone caulk to seal the the housing of the transient 
> suppressor to the box, not for the threads.. The idea being that you 
> drill a hole in the box and push the threaded part of the connector thru 
> the hole, with the housing of the suppressor snug up against the inside 
> wall of the box.
> 
> 
> Cheaper and smaller than a bulkhead feedthrough and another cable inside 
> the box from feedthrough to suppressor.
> 
> Of course, one could probably just use a piece of wire (not coax) to 
> connect the center pin of the feedthrough to the center pin of the 
> connector on the suppressor.  The shield of the feedthrough is solidly 
> connected to the box, as is the housing of the suppressor, and the few 
> inches of wire probably wouldn't make much difference impedance wise, at 
> least for HF.
> 
> 
> 
> You'd use whatever usual scheme you want for sealing the actual connector.
> 
> 
> 
> 
> 
> 
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