Optional Accessories - AOR AR7030 Operating Manual

Item
Select
Aux relay:
Aux output muting:
Aux o/p (L):
Aux o/p (R):
Sync detector:
RF Gain:
Filter calibrate:
All settings take effect immediately the soft-keys are
pressed, so the aux relay will switch on and off as its
settings are changed and the synchronous detector
bandwidth changes can be heard. Press the
buttons to leave the CONFIG menu once you have
set what you want.
Aux relay: Determines the switching function of the
relay contacts available on the AUX socket.
Off
Timer
Squelch
The aux relay is often used to control a tape recorder
motor. It can only be used for low voltage control, NEVER
CONNECT MAINS TO THE AUX RELAY CONTACTS.
The Timer setting is useful for recording programs
unattended - it will switch the tape on and off with the
receiver. The Squelch setting will start the tape to record
intermittent signals, such as communication channels.
Aux output muting: This selection has the same effect
as the soft-key on the VFO menu, but applies
squelch muting to the aux outputs rather than the
loudspeaker / headphone output. The default setting
is On.
Aux o/p (L): Sets the aux output level for the left channel
output. The default is 99% (maximum, about 800mV) and
it may be varied down to 0% (off) on a logarithmic scale.
The button reduces the level and the
increases it.
Aux o/p (R): As above for the right channel output.
Sync detector: Sets the way in which the AM synchronous
detector operates.
PAGE 30 AR7030 OPERATING MANUAL
Settings
None (Modify is informative
legend for the soft-keys)
Off Timer Squelch
Off On
0% (off) to 99% (max)
0% (off) to 99% (max)
Auto Narrow Wide
Auto Man
Start (pressing either soft-
key starts the automatic
calibration process)
Contacts always open
(default setting).
Closed when the receiver is
switched on.
Closed when the received
signal is above the squelch
threshold.
button
Auto The synchronous detector will automatically
tune the receiver and select wide and narrow
bandwidths appropriately. (Default setting).
Narrow Manual mode synchronous detection
enabled with narrow bandwidth PLL. The
receiver must be manually tuned to zero
beat and correction made for any frequency
variations.
Wide Manual mode synchronous detection
enabled with wide bandwidth PLL. The
receiver must be manually tuned to zero
beat, but tuning is not too critical.
Note: If changing from Wide to Narrow in manual mode,
don't stay on the Auto selection for more than a second
because the receiver will start its auto-tune sequence.
RF Gain: Enables or disables the automatic RF Gain
control. If enabled, the receiver will automatically decrease
RF Gain when the S-meter reads above S9+40dB. The
default setting is Auto, select Man only if you are a purist
or
or want to do some obscure lab measurements on the
receiver.
Filter calibrate: Select Start for the receiver to calibrate
its IF filters. See section 6-2 for full details.

10 Optional accessories

Additional and substitute 455 kHz IF filters: The
AR7030 is designed to accept a total of six IF filters, this
means that two optional filters may be fitted in addition to
the standard four provided. Within reason, any 455 kHz
filter may be fitted but the PCB is drilled to accept Murata
and Collins filters.
To gain access for filter fitting, both top and bottom covers
need removing. The top is held by four screws requiring a
2.5mm hex key to undo them. When replacing the top,
make sure that it is pressed fully home (flush to the sides)
before putting the screws in. The screw threads are not
long enough to pull the top down into the side pieces
without damaging the threads. Tighten the screws only
finger tight - do not over tighten. The bottom plate is
held by six No.2 posidrive screws.
Note: Fitting optional IF filters is not difficult but does
require the use of a soldering iron and we recommend
that it is carried out in a specialist workshop.
Planned options: The design of the AR7030 is such that
many extra features can be added and seamlessly
incorporated into its operating system. Options should
include a features upgrade (alphanumeric memory
labelling and multi-channel calendar / timer), internal
rechargeable battery and carrying case for portable use,
audio notch filter and noise blanker, and a stereo, band II
FM extension is under consideration.