Archive for January 30th, 2010

WWVB Antenna: Oops!

Ferrite inductor cores are notoriously fragile: they do not withstand much abuse at all. Given the amount of fiddling I’ve been doing with the Totally Featureless Clock, it was inevitable that I’d manage to drop the antenna…

Broken ferrite bar antenna

Broken ferrite bar antenna

Gluing it back together with cyanoacrylate demonstrated that some things just never work the same. The antenna depends on a continuous flux path through the winding and even the minute gap introduced by the adhesive is enough to ruin the antenna.

What they say about hearts and wheels is also true of ferrite bar antennas:

“Once you bend it, you can’t mend it…”

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