This is the beverage transformer I built for the future EU/JA Beverage receive antenna.
The design is directly from W8JI’s web site. Two turn primary and 5 turn secondary on a Fair Rite 73 mix core (part number 2873000202). Both sides get connected to separate ground rods to minimize common mode noise.
I have learned that it is much easier to trap water in an enclosure than to keep it out – so I don’t try to weatherproof the enclosure. In fact, I drill a small home in the bottom of the enclosure to make sure any moisture can drain out.