Before you start.
Before you start tuning the antenna, you should make sure that everything is
set up correctly for the job. Poorly setting up the system may lead to you
cutting it too short.
* Poor connections and joins can cause problems.
* On a car, low mountings such as a bumper mount can cause the SWR to read
higher (and reduce performance).
For base systems, objects such as walls, trees, poles, etc can affect the SWR.
Where possible, the antenna should be fitted well clear of such obstructions.
* Do not skimp on the coax. If you are limited by cost, buy a cheaper radio and
get good coax.
* Antenna: As with the coax, try to buy your antenna new. If limited by
money, by a cheaper radio and spend more on the antenna.
IMPORTANT!
Before cutting an antenna to size, be sure to check that it is absolutely
necessary, and then only cut small amounts off at a time. You can always cut
more off, but you cannot stick it back on.
Next page: Tuning.