APPLICATION NOTES
8
AM/FM RECEPTION
Some boats have more than one
AM/FM radio. The best way to insure good
reception is to supply a separate antenna for
each radio. Other options available to supply
adequate AM/FM reception to these radios
are listed below, along with some general
information in regards to radio reception.
“Y” ADAPTERS
The “Y” adapters used to connect one
antenna to two radios will only provide AM
reception to one of the radios and will
compromise both AM and FM reception.
AMPLIFIED AM/FM ANTENNA
A popular second antenna that can be used is
our AB-100 amplified AM/FM antenna. It is small
and has a retractable mast that can be mounted
vertically or horizontally. This antenna provides
good FM reception, but the AM reception will be
compromised to some degree because of the length
of the mast.
MAST LENGTH
AM/FM antennas compromise AM reception
by design. The optimum mast length for FM is
approximately 30 inches which is standard for most
automotive antennas. The optimum mast length for
AM reception is over 100 inches which is not
practical for mobile applications.
Summary of Contents for AquaTronics MS-220
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