HF-90 Operation & Installation Guide
The equipment you choose and the way in which it is set up
will also affect the success of your HF/SSB
communications. With respect to system configuration,
your choice of antenna system and power supply is critical.
What is good for one system is not necessarily good for
another. The way in which your system is installed is also
extremely important. Certain rules which must be observed
for HF/SSB installations, such as correct antenna
positioning and proper grounding, will affect the success of
your communications, sometimes quite dramatically.
Installation is covered in more detail in Section 8 of this
Guide.
To ensure no mistakes are made with your system
configuration and/or installation, you should speak to your
Q-MAC Representative.
Please note that communications on any HF/SSB radio will
sound different to that on a VHF (Very High Frequency) radio,
UHF (Ultra High Frequency) radio or telephone. Because of the
nature of HF/SSB propagation, a marginal level of background
noise is always expected. This is normal.
8
Section 2.3
Weather conditions
Certain weather conditions will also affect the success of
your HF/SSB communications. You may find that in
stormy conditions the background noise on your radio will
increase, as a result of ‘static’ caused by lightning.
Man-made electrical interference
Interference of an electrical nature can be caused by
overhanging power lines, high power generators, air-
conditioners, thermostats, refrigerators and vehicle engines,
when in close proximity to your antenna. The result of such
interference may be a continuous or intermittent increase in
the level of background noise.
System configuration and installation
Special Note:
