[Lowfer] efficiency of multiple antenna systems

[Stewart Nelson]

Hi all,

It's been known for a long time, that one can combine two relatively
closely spaced LF antenna systems, and get an efficiency greater
than that of either alone.

Unfortunately, I've had a hard time convincing some folks on this ML.

Luckily, I stumbled across some professional documentation of this
effect.  The station happens to be our own WWVB!

Go to http://www.boulder.nist.gov/timefreq/stations/wwvb.htm and
click on the link "WWVB Improvements: New Power from An Old Timer".

Even if you don't care about antenna efficiency, it makes for a
fascinating read, and has lots of info about LF propagation.

73,

Stewart KK7KA