[Hi-zreceivingarraydiscussions] Idea for weatherproofing amps

[Mike Waters]

On Thu, Mar 24, 2011 at 11:16 AM, contact <contact at hizantennas.com> wrote:

> Hi Mike,
>
> Could you send the link URL for that enclosure?
>
> TNX  Dick


You mean a URL to a supplier? I don't have a link handy, but Mouser and
Newark have them. They are made by Hammond.

They are polycarbonate, and the lids are available in clear, smoke, and
opaque. They come in many sizes. I have been using those for my Beverage
antenna enclosures for some time now.

73 Mike
www.w0btu.com


> On 3/24/2011 12:14 AM, Mike Waters wrote:
>
>> On Wed, Mar 23, 2011 at 6:13 PM, David Raymond<daraymond at iowatelecom.net
>> >wrote:
>>
>>  Even gasketed enclosures are a problem.  Unless they are pressurized
>>> (like
>>> air Heliax), you still have problems with condensation.  Leaving an
>>> opportunity for some air flow is a better approach than air tight.
>>>
>>>  I have had good results with small gasketed enclosures, like the one at
>> http://www.w0btu.com/images/Beverage_control_box_4444.jpg and
>> http://www.w0btu.com/images/Beverage_box4412.jpg.
>> I fill all the connectors with silicone dielectric compound, and there are
>> NO air vents. Works for me.
>>
>> I don't know how big these preamps are. Regardless, the larger the
>> enclosure, the more of a chance you have for moist air getting inside.
>> Reason being, there is a larger internal pressure change with a given
>> temperature and/or barometric pressure change.
>>
>> In the past, I have put a little desiccant package inside enclosures
>> sealed
>> with tape.
>>
>> 73 Mike
>> www.w0btu.com
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