[BC] Orienting a Directional FM antenna

[Urban, Brian L]

For an FM DA, you will need a surveyor to lay out the antenna azimuth so
that you can certify that the antenna is properly oriented.  The Surveyor
has to submit an affidavit with the license application.

The way we did this was have the surveyor lay out a line of stakes at the
specified azimuth relative to true (polar star) north.  The riggers lined
the elements up on the stakes.  The riggers told me the line was really
helpful as they usually only have a  point instead of a line for alignment.

Aside:  when the surveyor executes his affidavit, have him use both
decimal degrees and degrees, minutes, seconds.  Some FCC staffers cannot
distinguish between DD and DMS (don't ask how I know).

-- 
Brian Urban
Chief Operator
KUT Radio
TEL 512-471-1085

-----Original Message-----
From: wpio-fm <wpio at gate.net>

It's not an issue easy when face mounting an FM directional
antenna...just get it on the correct face.

However, sometimes, on a leg, or pole mount, it requires an angle.  I
have one such situation with a two bay Horiz antenna that Shively is
making for WEJF, Palm Bay, FL.

It is to be oriented 15 degrees off in relative to zero.  In this case,
zero is 90 deg to the face of the tower but on a pole mounted in the
middle of the face.

My riggers are not going to know how much swing constitutes 15 degrees.
Makes me wonder of someone makes a sticker band for 2 1/2" OD pipe that
has degrees marked on it.  They could follow that I think.

Shively says I'm the first to ask them how to get pole orientation
correct in the field.  I'm trying to get them to give me a measurement
of say the tip of the horizontal parasite back to the coaxial joint for
that bay...which they appear to be open to.

I don't want to imply that this is a Shively (or any other mfgr
problem).  It is my problem, but it is indeed a problem.

Randy
wejf