AOR AR3030 Receiver Operating Manual

AR3030 operating manual
21
An external speaker should have a nominal 8 OHM impedance and power
handling of 2 WATTS or greater.
5-30 FAX - FAX audio output socket
This 3.5mm mono jack socket is designed to provide a suitable audio
characteristic and constant level output to feed data facsimile decoders.
Output is 600 OHM 0dBm constant.
5-31 RS232C - Computer control port
The 9 pin female D type RS232C control socket and associated internal
circuitry is fitted as standard.  This permits the receiver to be...

AR3030 operating manual
22
This three position slide switch allows selection of aerial input.
In the left position the high impedance wire input is selected.
In the centre position a small level of amplification along with impedance
matching is applied to the BNC aerial input to permit operation from a small
high impedance telescopic whip aerial.
In the right position the 50 OHM BNC aerial socket is selected allowing
connection to low impedance coaxial aerials such as dipoles, magnetic baluns,
loop...

AR3030 operating manual
23
(6) Basic manual operation of the receiver
Connect and select an appropriate aerial (antenna) to the input on the rear of
the receiver.  The selection of aerial depends upon your location and specific
requirements but may include a dipole or long wire.  There is further aerial
information in this manual (section 10).  If in doubt please consult your dealer.
Connect the AR3030 to an appropriate DC power source using either the
supplied AC adaptor or optional DC3000 DC lead....

AR3030 operating manual
24
The receiver may be immediately tuned via the rotary tuning control.  The free
running tuning knob is used to select receiving frequency and in memory mode
for selection of memory channel.
The tuning knob is by far the most “traditional” approach to tuning on
shortwave providing a smooth feel and the best method of user interface
especially when listening on the SSB, FAX and CW modes.
It is possible to tune the receiver through it’s entire range from 30kHz to
29.99999MHz....

AR3030 operating manual
25
detection).  This is a special form of AM reception capable of reducing fading
on longwave, mediumwave and shortwave signals especially at night.
The receiver must first be accurately tuned in standard AM mode then switched
to S.AM.  A short whistle may be heard as the set “locks” onto the received
station.  If a sustained whistle is encountered then you probably do not have
the receiver quite centred on the station,  try tuning up and down by a couple
of kHz and try again.
For...

AR3030 operating manual
26
pauses in speech.
Do remember that reducing the RF GAIN control (which increases deflection of
the S-meter) reduces the sensitivity of the receiver,  the normal position is fully
clockwise.
USB
Upper Side Band -  The same comments apply as for LSB.  By convention,
Radio Amateurs also use USB above 10MHz.
An optional Collins 2.5kHz 8 resonator mechanical filter of high specification
may be fitted in place of the standard 2.4kHz Murata ceramic filter for
improved selectivity.
CW...

AR3030 operating manual
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press the [VFO] key again.
Note: The rotary tuning control is also often historically
referred to as the VFO.
6-4 TONE - Audio tailoring
The audio characteristic is adjustable on most modes via the [TONE] key on
the front panel.
Selecting a high tone setting may improve the listening quality of strong
broadcast services such as longwave but where adjacent interference is
experienced selecting the low setting may reduce the levels of annoying
heterodynes.
The current setting of...

AR3030 operating manual
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An optional 2.5kHz/-3dB Collins eight resonator mechanical filter (526 8635
010) of higher specification may be optionally fitted (workshop fitting) to
replace the 2.4kHz filter. Should the narrow CW optional PCB position not be
used,  it is possible to fit the optional Collins 2.5kHz filter as an addition which
will be selected in the narrow position.
CW
2.4kHz Murata ceramic filter in the Normal position.  An optional 500Hz/-3dB
Collins seven resonator mechanical filter (526...

AR3030 operating manual
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The usual position for this control is fully clockwise.
The setting of RF GAIN is particularly important for SSB reception to prevent
an unpleasant rise in background noise especially during pauses in speech.
When listening to SSB transmissions,  rotate the RF gain control anti-
clockwise so that the S-meter needle just “lifts” with speech peaks.  This will
greatly reduce background noise levels.
Do remember that reducing the RF GAIN control (which increases
deflection of the...

AR3030 operating manual
30
the BFO PITCH
control is rotated it
will initially sound like
a fine tuning control.
To practice using the
BFO find an SSB
transmission
suffering from
adjacent channel
interference and tune
away by a few kHz
using the main rotary
tuning control.
Ensure the BFO
PITCH control is
selected and rotate
the BFO PITCH
control from side-to-
side until the signal
becomes readable
again.  You should
experience a
reduction or
elimination in
adjacent channel
interference in many
cases.
To...