AR5000 OPERATING MANUAL PAGE 17
5-21 ANT 2
This is the secondary aerial (antenna) input for the AR5000
receiver. It may be controlled from the front panel or
programmed to switch automatically.
The socket is a 50 OHM SO239 type and
the corresponding plug is the PL259. Many off the shelf
inter-series adapters are available for connection to BNC,
N-type or other types of aerial termination.
5-22 ANT 1
This is the primary aerial (antenna) input for the AR5000
receiver. It may be controlled from the front panel or
programmed to switch automatically.
The socket is a high quality 50 OHM N-type. Many off the
shelf inter-series adapters are available for connection to
BNC, PL259/SO239 or other types of aerial termination.
(6) Basic manual operation of the receiver
To achieve the maximum use of the receiver ’s
performance and features, it is important to fully familiarise
yourself with it’s operation through the use of this
handbook.
Connect and select an appropriate aerial (antenna) to the
ANT 1 input on the rear of the receiver. The selection of
aerial depends upon your location and specific
requirements but may include a dipole, discone, colinear
or long wire. There is further aerial information in section
20 of this manual, if in doubt please consult your dealer.
Connect the AR5000 to an appropriate d.c. power source
using either the supplied a.c. adapter or optional DC3000
d.c. lead.
Note: Never connect the AR5000 directly to the
a.c. mains supply.
Before turning on the power switch, set the volume to the
10 o’clock position and squelch control to the 12 o’clock
position.
6-1 Switching on for the first time
Press and release the
switch, the receiver will
power up and the LCD back light will illuminate.
Press the
key a few times until the legend “
VA
VA
VA
VA
VA
” is
displayed in the lower right corner of the LCD. Press and
hold the
key for more than one second so that the
“AUTO” legend is displayed in the centre of the LCD above
the last right hand digit of the frequency readout (Hz
position) to ensure the receiver is in AUTO MODE. This
places the receiver into a known state of operation ready
to accept frequency input, change of mode etc. As with
all modern microprocessor controlled equipment, the
AR5000 has enormous potential and capabilities.
Note: The AR5000 uses an EEPROM (Electronically
Erasable Programmable Read Only Memory) for storage
of memories and other parameters. A permanent storage
EEPROM has the advantage of not requiring a back-up
battery to maintain data even when the receiver is
disconnected from a power supply. The EEPROM may
be over-written many thousands of times.
6-2 Changing VFO
The term VFO historically means Variable Frequency
Oscillator and today refers to a tuneable data store which
contains frequency, mode, step, and attenuator
information.
The AR5000 has a total of FIVE VFOs which store
frequency, mode, tuning step, I.F. bandwidth, attenuator
setting etc. VFO mode is selected using the
key.
The currently active VFO is displayed in the lower right
corner of the LCD as “
VA
VA
VA
VA
VA
”, “
VB
VB
VB
VB
VB
”, “
VC
VC
VC
VC
VC
”, “
VD
VD
VD
VD
VD
” and “
VE
VE
VE
VE
VE
”.
To cycle through the five VFOs, press the
key
repeatedly until the desired VFO is displayed.
Each VFO can be used for tuning and keying frequencies,
all can hold different parameters. This is useful for keeping
one VFO on VHF airband (AM), one on VHF marine band
(FM), one on 20m amateur band (USB) etc...
In addition, the five VFOs are assigned additional status:
VFO-A
VFO-B Manual search between VFO-A and VFO-B
displayed frequencies
If an automatic frequency search is initiated with “
VA
VA
VA
VA
VA
” or
“
VB
VB
VB
VB
VB
” displayed, the process will loop from the start
frequency in VFO-A and search until it gets to VFO-B
then loop back to the start frequency of VFO-A and repeat.
The key sequence
accesses a menu
where the DELAY, L-SQ level squelch and VOICE options
may be set up for search between VFO-A and VFO-B.
VFO-C
VFO-D Accept the frequency from the search mode
If a frequency is keyed in to VFO-C or VFO-D and the
key held for more than one second the search
process will commence from the displayed frequency.
If
is pressed while in SEARCH MODE, the active
frequency will be transferred to VFO-D, the AR5000 will
switch to VFO-D automatically where you may monitor
and tune from the selected frequency.
