[BC] AM loads

dynotherm at earthlink.net dynotherm at earthlink.net
Tue Mar 24 10:12:06 CDT 2009


That is such a common story, and in this case it may be compounded by
the fact that the station this thread concerns has a skirt fed
folded unipole. I have nothing against folded unipoles, per se,
but it is one of the easiest antennas to feed incorrectly or set up
inefficiently in a way that wastes huge amounts of power in a way
that is not easily discovered unless you know where and how to look.

Phil Alexander, CSRE, AMD

-----Original Message-----
>From: Scott Cason <scott at lagrange-com.com>
>
>Something else to consider with the bad load is, how much of your power is
>really making it to the antenna?  Four years ago, I replaced a Bauer 707
>with a Nautel J1000.  The Nautel would not come up.  We stuck a OIB on the
>line and the load was severely mis matched and had been running that way for
>DECADES!  Once we had retapped the ATU and got the Nautel running, suddenly
>we could hear the station in areas it had been unlistenable.  The owner
>could hear it at his home.




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