[BC] P.O.ed by transmission line damage

[Mike McCarthy]

The radio station has the right to demand the pre-measurements.  If it 
means the tower or other substantive work be de-erected so as to preform 
the pre-measurements, then the towers's owner has an obligation to comply. 
I did that only once and then word got around that stations can do 
that.  To my knowledge, there hasn't been another one which needed to be 
de-erected since.  What made this necessary was the unusual configuration 
of a 5th tower added inside of a cluster of VERY closely located towers in 
the middle of the main lobe at a distance of 1.3Km.

With a great deal of cooperation, all 5 owners agreed to permit one company 
to adjust all the detuning networks in one great detuning effort. Each had 
an engineer on site who understood mutual coupling (they were also 
hams).  It took 3 loops around to each tower and some scattered back-forth 
and the whole cluster was brought down nicely.  With an incidental of 
300mV, the reradiated at 100M was less than 40mV.

Needless to say, the station demanded a complete before/after partial proof 
be done, plus non-D radials after the new tower was added to at least 
verify total system performance and pattern compliance had not been 
compromised.

MM

At 03:34 PM 1/22/2006 -0700, Gary Peterson wrote
>In this instance, the "work" was scheduled by a cellular company.  I have
>yet to have ANY cellular company notify me of anything, including erecting a
>~150 ft. monopole between two directional arrays with careless abandon (for
>which they were fined...to them, just part of the cost of a new site).
>Cellular companies appear to only answer to a higher authority, and it ain't
>the FCC.  Have you ever heard of a cell site's license revocation for
>repeated and willful rules violations?
>
>Gary, K?CX
>
>" In my opinion.....
>  It's not too much to ask, but you're expecting the wrong people to provide
>  the notice.
>  Whoever ( or whichever station ) scheduled the work should be the one to
>  coordinate with other users of the tower.
>  In fact, ( without looking ) I believe that's what the rules already
>require !
>Cowboy "
>
>
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