Re: remote antenna for DCF77 clock

Hello Michael,

..., but I am trying to get it dug out of storage and put it back up. I am going to rebuild it, this time with a sweatable copper insulated
union made for a hot water heater and run the wires through the bottom
of the diecast electrical box. the fittings will thread together, and
provide more strength than the PVC coupling I used in the original
design.


Just make sure there is some kind of dielectric between the diecast box and the pipe. Humid Florida weather could trigger pretty nasty corrosion. Don't know but could a brass box be better here?


   BTW, I used a shop vac to pull wire through a large conduit in 1970
when I ran electricity to my dad's garage in an underground conduit.  It
was 1 1/2" so I tied a wad of paper towels to a thin rope and stuffed
them into one end, then taped the hose to the other end and turned it
on. You could hear the motor struggling at first, then it started to
move. Finally it popped into the canister of the shop vac a minute or so
later.  I did this because the only fish tape available was a 50 foot,
and the run was about 80 feet and ran under the driveway and I didn't
want a pull box under the drive.


Yeah, those trick of the trade. Did them as well but we did not have the luxury of shop vacs and compressors. Often there wasn't even any power yet. Once I 'blew' a wad through there using a pair of bellows. Tried an air mattress pump first but the bellows worked better. It's just that it takes a few hundred blows until the wad cometh and then your arms seem to fall off. Once I was pumping like crazy when someone asked "What's this here on the ground"? My wad and string, and I hadn't seen it.

I wish I had a pipe underneath the driveway, to operate the sprinkler valves on the other side. But in the 70's folks didn't seem to have that foresight. The hose tunneling trick won't work here, too many large rocks.

Regards, Joerg

http://www.analogconsultants.com
.