AOR AR7030 - Technical specification; Receiver system; Reception and Tuning; Display and Controls

AR7030 OPERATING MANUAL PAGE 33
13 Technical specification
Performance figures relate to a typical production receiver and are not guaranteed levels.
Test signals:- AM mode : Modulated to 70% depth at 1kHz
FM mode : Deviated by 1.5kHz at 1kHz
SSB mode : Unmodulated carrier, resolved at 1kHz
1. Receiver system
Dual conversion super heterodyne system with intermediate frequencies of 45MHz and 455kHz.
High dynamic range mixer using a DMOS lateral FET quad.
Tuning by single loop PLL / DDS system from a TCXO reference.
All receiver functions under microprocessor control.
2. Reception and Tuning
Tuning continuous from 0 to 32MHz in 2.655Hz steps (10.62Hz in AM and NFM modes).
Frequency settability from keypad to ± 1.4Hz.
Tuning rate from spin-wheel 1kHz per rev (4kHz in AM and NFM modes), increasing with rapid rotation.
Fast tuning mode increases rate by 256 times.
Reception modes : AM Envelope detector and PLL synchronous detector.
SSB Upper and Lower sideband.
NFM Narrow band FM.
Other CW and Data.
3. Display and Controls
All receiver states displayed on back-lit, liquid crystal, character / graphic display.
Display is 2 lines of 24 characters, S-meter graphic is 70 segments form S1 to S9+50dB.
Frequency display to 10Hz resolution.
Rotary controls : Volume spin-wheel (with detent).
General spin-wheel (with detent) used with the menu system.
Tuning spin-wheel (free running).
Display viewing angle / contrast (on rear panel).
Push buttons: Power on / off and setup menu.
Menu select (1 button) and menu choice (4 buttons).
Mode select (2 buttons).
Fast tune.
Remote keypad : 32-key infra-red remote control
Numeric keypad.
Volume and tone.
Filter select and passband shift.
Tuning and memory operations.
Computer remote control of all functions via 1200 baud, RS232 type interface.
4. Memories
100 frequency memories contain :
Tuned frequency, mode, I F bandwidth and passband shift.
Squelch setting for AM, NFM and SSB modes.
BFO setting for CW and DATA modes.
Scan include / exclude.
Three setup memories contain :
I F bandwidth, passband shift, BFO, squelch and AGC speed settings for each mode.
Treble and bass settings, aux output levels and aux relay operation, squelch muting and
scan hold.
R F gain, auto / manual switching and Sync detector auto / manual mode and bandwidth.
Remote keypad tuning step size.