Guys, do not over complicate things. Your H field does not have to be outside. I can be any where in the house, attic, garage, even in your underground basement.
It does not matter how well you seal your box, it will suck in moisture due to the normal heating and cooling of the day, which will then condense on the inside of the box and PCB.
Now, remember before you decide where you want to mount your H Field, you have to find that quite spot with the least amount of 'noise' by using an AM radio tuned to the lower frequencies, of station and listen to the amount of noise while walking around. Attics are great for that as it is a large unoccupied area with ample space to mount you H field. Where you think is the best place for you, might be the worse spot for the H field. I made that mistake when I first started.
It does not matter how well you seal your box, it will suck in moisture due to the normal heating and cooling of the day, which will then condense on the inside of the box and PCB.
Now, remember before you decide where you want to mount your H Field, you have to find that quite spot with the least amount of 'noise' by using an AM radio tuned to the lower frequencies, of station and listen to the amount of noise while walking around. Attics are great for that as it is a large unoccupied area with ample space to mount you H field. Where you think is the best place for you, might be the worse spot for the H field. I made that mistake when I first started.
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