On 05/14/2012 11:04 PM, paul swed wrote:
Magnus is right lots of ways for water to sneak in. So I have not had time to figure it out yet. But it is a copper loop and I suspect the place its joining the preamp box let water in over time. The fact is even a small pin hole that allows air in and out thats humid can allow water buildup. But this is a lot and I need to figure out what happened. Its a homebrew antenna but am sure over years even the best can leak. Its about 2ft loop and I had been doing calcs on a 10 ft square loop and such. I suspect that would help quite a bit on the east coast. Time will tell. Still doing a bit of planning and will need to sink some piers for that size of an antenna.
The antenna which failed was actually quite impressively built. It was well built, but failed in assembly. It's replacement, the same model, have not failed since.
One of the things to care about is to not let there be a natural place for water to build up on a joint into the sensitive stuff. If you have a copper loop, then I would turn the tubing upwards into the box rather than on the sides of it, such that water drops of the downside rather than rest on box, and then have some angled ceiling over the "box".
Cheers, Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
