[Hi-zreceivingarraydiscussions] Idea for weatherproofing amps

[Jacques RAMBAUD]

Thank you Dave !!
73
Jacques F6BKI
----- Original Message ----- 
From: "David Raymond" <daraymond at iowatelecom.net>
To: "Hi-Z Receiving Array Discussions" 
<hi-zreceivingarraydiscussions at hizantennas.com>
Sent: Thursday, March 24, 2011 9:36 AM
Subject: Re: [Hi-zreceivingarraydiscussions] Idea for weatherproofing amps


> Jacques. . .I don't have any pictures right now but will be taking some. 
> 73. . . Dave, W0FLS
> ----- Original Message ----- 
> From: "Jacques RAMBAUD" <f6bki at orange.fr>
> To: "Hi-Z Receiving Array Discussions" 
> <hi-zreceivingarraydiscussions at hizantennas.com>
> Sent: Thursday, March 24, 2011 1:43 AM
> Subject: Re: [Hi-zreceivingarraydiscussions] Idea for weatherproofing amps
>
>
>> Hello all , Dave , any pictures available ?? Thank you
>> 73
>> Jacques F6BKI
>> ----- Original Message ----- 
>> From: "David Raymond" <daraymond at iowatelecom.net>
>> To: "Hi-Z" <hi-zreceivingarraydiscussions at hizantennas.com>
>> Sent: Wednesday, March 23, 2011 10:00 PM
>> Subject: [Hi-zreceivingarraydiscussions] Idea for weatherproofing amps
>>
>>
>>>I put up an 8 circle-narrow 160m array early last December.  I was in a 
>>>quandary as to how to weatherproof the amps at the antenna elements. 
>>>Being pressed for time and having a snowstorm bearing down on me, I 
>>>wrapped the amps in plastic grocery bags and secured the mess with tape. 
>>>And it was a mess but it kept things dry, or so I thought.  I had not 
>>>given consideration to condensation.  Cal, W0IZL, mentioned to me that he 
>>>used the same approach and had experienced enough condensation problems 
>>>that a couple of his amp boxes had to have work.  I felt more pressed to 
>>>find a more permanent, suitable solution that would allow for air 
>>>circulation.
>>>
>>> In my pondering as to how to approach a more permanent solution, I put 
>>> the amps inside of 4" PVC with caps on top and leaving the bottom open. 
>>> I was just going to strap the PVC to the side of my mounting pipes and 
>>> bring the antenna and ground wires in through small holes in the side of 
>>> the PVC. In my discussions with Toni, N0NI, he suggested drilling a hole 
>>> in the pipe cap and sliding the antenna element (in my case, 1" 
>>> aluminum) through the cap with a piece of 4" PVC attached to it.  I cut 
>>> the 4" PVC in 15" length and put an assembly together to try.  It works 
>>> quite well. The PVC cap rests on the screw which passes through the 1" 
>>> aluminum elements and secures the antenna wire to it.  I sealed the hole 
>>> in the PVC cap around the aluminum passing through it with liquid tape. 
>>> The PVC pipe covers the amp and associated wiring.  I did drill the hole 
>>> in the cap somewhat off center to allow a little extra room for the amp 
>>> which was is tie wrapped to the side of my steel "U" type 4' fence post. 
>>> Now that I've tried one and am pleased I'll be finishing up the other 
>>> seven elements in a similar manner tomorrow (if we don't get rain or 
>>> snow).
>>>
>>> 73. . .Dave
>>> W0FLS
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>>
>>
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