[Hi-zreceivingarraydiscussions] Idea for weatherproofing amps

[contact]

TNX Mike.

Dick

On 3/24/2011 3:02 PM, Mike Waters wrote:
> 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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>>>
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