AOR AR5000 Wideband Reciever Instructions

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18-4  AF.SET INT/EXT
The AR5000 may have become confused about the status
of AUDIO INTERNAL / EXTERNAL.  Reaffirm the setup.
1  Press 
  to access the audio setup menu.
A-LPF 3.0 kHz
A-HPF 0.05 kHz
DE.EMP 750
CW.PITCH 0.7 kHz
AUDIO INT  

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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...

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at VHF/UHF frequencies than for short wave.  If possible
the aerial should have a clear path to the horizon.  Results
are usually disappointing when an installation is in a loft
space.
Long wire aerials
For short wave reception, a random length of long wire
approximately 10 to 20 metres in length forms a good
compromise.  The wire should be connected to the centre
pin of ANT 1 (N-plug) or ANT 2 (SO239).  If possible try
to locate the receiver close to a window so...

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ATU & preselectors
Aerial tuning units (ATU) may improve the short wave
section of a wide
range receiver (such as the AR5000) by rejecting
unwanted signals and only allowing a specific band of
frequencies through.  These ATUs are normally
constructed in small boxes with about 3 controls on the
front. The disadvantage is the need to constantly retune
the ATU when changing frequency. An ATU of this nature
is 
passive, this means that no power is required to...

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(21)  Propagation - short wave bands
VHF and UHF transmissions generally only propagate
relatively short distances when compared to short wave
signals.  For all intensive purposes they may be considered
as line-of-sight 
plus a bit.
Where as point-to-point communication between mobile
users or when in built up areas may only be a couple of
kilometres, aircraft at heights of 9,000 metres may be
heard at a much greater distance (50 to 300 kilometres
or more with the...

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transmissions will pass straight into space.  MINimum
usable frequency is also stated for similar reasons.
Many propagation predictions and statistics are published
and usually available from most country’s National
Amateur Radio and short wave listeners representatives.
Various publications are produced giving transmission and
contact details for world-wide reception.  These titles
include:
World Radio TV Handbook (WRTH), BPI
Communications, 1515 Broadway, New...

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