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(19) Optional accessories
DA3000 VHF-UHF discone aerial
16 element VHF - UHF discone aerial
with usable coverage of 25 MHz to 2000
MHz.
Supplied with cable and
connectors etc.
WA7000 wide band active whip aerial
Compact aerial designed for installation where
space is a problem. The WA7000 is active on
the lower frequency band 30kHz to
30MHz and passive on the higher
band between 30MHz to 2000MHz.
Supplied with cable and connectors
etc.
MA500 mobile aerial
Compact VHF/UHF loaded whip on a magnetic mount
with coaxial cable.
LA320 loop aerial
Desktop active loop aerial for portable
operation away from a base aerial such
as when while travelling on business or
holiday. Frequency coverage is 1.6 to
15MHz with optional elements to cover
0.2 to 0.54MHz and 0.54 to 1.6MHz.
ABF125 RF filter
VHF civil airband filter to reduce the chances of
breakthrough especially from powerful VHF band-II
transmitters.
CR5000 tape record cable
Cable and connector suitable for use with motor-controlled
tape recorders.
Collins IF filters
MF500
Optional 500 Hz mechanical
CW filter
MF2.5
Substitute 2.5 kHz mechanical SSB filter
MF6.0
Substitute 5.5 kHz mechanical AM filter
PAGE 72
AR5000 OPERATING MANUAL
CT5000 board
CTCSS plug in board for CTCSS search and squelch
operations.
AS5000 aerial switch
Automatic aerial switching unit designed to control four
aerials (automatic and front panel aerial switching with
the AR5000).
DS8000 speech inverter
Speech inverter board (non AOR product).
Not available in all countries.
RS232 command set
Programmers RS232 command listing with information
on configuring Windows terminal. A separate serial
connecting lead will also be required to connect to your
computer.
Computer control software
A hands off IBM-PC WINDOWS computer program is
planned to control the AR5000 via the rear panel remote
connector. A separate serial connecting lead will also be
required to connect to your computer.
(20) Aerials (Antennas) and earth systems
The subject of aerial choice and earth can be quite
complex. There are many advantages and disadvantages
to consider before connecting an external aerial to your
receiver.
Theory and practice
One interesting phenomena is that aerial theory and
practice can be
surprisingly different. Keeping common sense in mind it
is one of the few remaining areas for listeners to easily
experiment and often achieve fantastic results.
Whip aerial
Whip aerials can give fair results for casual listening to
the VHF/UHF bands. For best results external aerials in
clear space are recommended.
Mounting location
It is important to mount any external aerial as high as
possible and in clear space although this is more important
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