AOR AR-ONE User Manual download pdf (Page 30)

PAGE 30 AR7030 OPERATING MANUAL

Item Settings

Select None (Modify is informative

legend for the soft-keys)

Aux relay: Off Timer Squelch

Aux output muting: Off On

Aux o/p (L): 0% (off) to 99% (max)

Aux o/p (R): 0% (off) to 99% (max)

Sync detector: Auto Narrow Wide

RF Gain: Auto Man

Filter calibrate: Start (pressing either soft-

key starts the automatic

calibration process)

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 Contacts always open

(default setting).

Timer Closed when the receiver is

switched on.

Squelch Closed when the received

signal is above the squelch

threshold.

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 button

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.

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 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.

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AOR AR-ONE User Manual Page 30

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