Just a wee note about the fitting of those nice Gore vents. It is important to 
have a suitably sized vent or vents for the volume of box and the type of 
equipment inside it, and Gore can calculate that for you. 

For a simple small box for a masthead preamp it is OK to just choose one of the 
eBay or Farnell/CPC ones that you can buy in one off quantities, but for a 
larger enclosure with a big investment you want to do it right and the 
manufacturers will be happy to oblige. I went through Gore in the UK to get my 
info, and they even sent me free samples as their minimum order was for 100 off.

Unlike drain holes which would be in the bottom of the box, Gore vents are 
mounted on the vertical wall of the box.



73 from David GM4JJJ

> On 21 Jan 2016, at 15:47, Clay Autery <[email protected]> wrote:
> 
> Right...  THAT is how you have to look at it when you are
> engineering/buying an enclosure.  NOT just at the acquisition costs, but
> that you are preventing the loss of many hundreds or thousands of
> dollars in equipment AND accomplishing the mission at the same time.
> 
> 73,
> 
> ______________________
> Clay Autery
> 
>> On 1/21/2016 1:39 AM, Ian White wrote:
>> Compared with the value of the KAT500 inside the enclosure, a properly
>> engineered semi-permeable vent is a very good investment.
> 
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