Precautions and Preparation
2
Checking the system
Remember!
It is YOUR responsibility to ensure that your installation meets all appli-
cable codes and the centerline-of-radiation requirements of your FCC
construction permit.
Shively has planned the installation of the antenna based upon information
provided by you. If this information contained errors, the parts and mounting
hardware will have been designed incorrectly and will cause expensive delays
in installation.
Therefore, we recommend that you recheck the installation
parameters during this planning stage.
Check all the parts to be sure that they will fit the tower and each other. Study
the installation drawings carefully to confirm that the information used in
designing the antenna and mounts was, in fact, accurate.
Have a reliable tower person, familiar with antennas and coaxial line, inspect
the tower and review the installation drawings before the full rigging crew
arrives.
If design problems are found, contact Shively Labs immediately. Pay particu-
lar attention to:
• Frequency of the antenna.
• Fit of the mounts to the tower members.
• Freedom from interference by gussets, leg flanges, guys and their
attachment points, tower face members, obstruction lights, and
other components.
• Compatibility of transmission line and antenna input terminals.
• Location of the transmission line run relative to the antenna input
terminal.
• Use of non-metallic guy sections on the tower in the region to be
occupied by the FM antenna. Ensure that there are no metal guys
within ten feet (three meters) of any radiator.
• Availability of proper electrical service for de-icers, if applicable.
• The adequacy of the tower structure and guys to carry the wind-
load placed upon them by the antenna, particularly if radomes are
used.
You gave Shively this information at the time of purchase, but a last check at
this time can catch an error, which will be easier to correct before installation
begins.
