AR7030 technical specification
             
       AOR (UK) Ltd
         
         Unit 9, Dimple Road Business Centre, Matlock, Derbyshire DE4 3JX, 
      England
      Tel: +44 (0) 1629 581222  Fax: +44 (0) 1629 580070

AR7030 Technical Specification
      1. Receiver system
      2. Reception and Tuning
      3. Display and Controls
      4. Memories
      5. R F Input
      6. I F System
      7. Audio System
      8. Power supply
      9. Dimensions
      10. Sensitivity
      11. Selectivity
      12. Dynamic range
      13. Spurious responses
      14. AGC characteristics
      15. Audio quality
      16. Frequency stability
      17. Local oscillator phase noise
      18. Optional filters
      19. Block diagram
      Command Protocol



      1. Receiver system

  Dual conversion superheterodyne 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.
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      2. Reception and Tuning

  Tuning continuous from 0 to 32MHz in 2.655Hz steps (10.62Hz in AM & NFM 
  modes). 
  Frequency settability from keypad to  1.4Hz. 
  Tuning rate from spin-wheel 1kHz per rev (4kHz in AM & 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.
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      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 menu system. 
  Tuning spin-wheel (free running). 
  Display viewing angle / contrast (on rear panel). 
  Push buttons:
  Power on / power and timer 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 pass-band shift. 
  Tuning and memory operations. 
  Computer remote control of all functions via 1200 baud, RS232 type interface 
  via 5-pin, 240 DIN connector.
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      4. Memories

  100 frequency memories contain :
  Tuned frequency, mode, I F bandwidth and pass-band shift. 
  Squelch setting for AM, NFM and SSB modes. 
  BFO setting for CW and DATA modes. 
  Scan include / exclude. 
  Three set-up memories contain :I F bandwidth, pass-band 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.
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      5. R F Input

  Three antenna inputs (selected by rear-panel switch) : 
  50 ohm unbalanced via SO-239 connector. 
  600 ohm unbalanced via wire grip connector. 
  Hi-Z whip input (on SO-239) with reduced R F performance. 
  R F band split at 1.7MHz with high-pass and low-pass filters. 
  R F pre-amplifier and attenuators give +10 / 0 / -10 / -20 / -30 / -40dB R F 
  Gain. 
  Switching is automatic with manual override.
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      6. I F System

  Four I F filters fitted as standard, nominal bandwidths : 
  2.2 kHz (default for SSB, CW & Data modes) 
  5.5 kHz (default for AM & Sync modes) 
  7.0 kHz 
  9.5 kHz (default for NFM mode) 
  Provision for two more optional filters (at 455kHz) of any bandwidth from 
  250Hz to 10kHz. 
  Pass-band frequency adjustable by  4.2kHz for all filters. 
  Resolved audio frequency is adjustable by  4.2kHz in CW and Data modes. 
  AGC is carrier derived with peak detector in SSB modes and mean detector in AM 
  modes. 
  AGC release speed selectable : Fast / Medium / Slow. AGC can be switched off. 
  Manual I F gain control operates as maximum gain limit. 
  Squelch operation is derived from AGC level, with optional signal muting. 
  455kHz I F output available from the AUX connector at about -20dBm / 50ohm.
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      7. Audio System

  Entire audio path is two-channel (stereo) with mono loudspeaker output. 
  External LS output (disconnects internal LS) via 3.5mm mono jack : 2.2W into 
  8ohms. 
  Headphone output (disconnects internal LS) via 3.5mm stereo jack (mono 
  compatible) : 2.5V from 100ohms. 
  Aux outputs (independently adjustable levels) via 8-pin DIN connector : 0 to 
  800mV from 1kohm. 
  Treble tone control : 8dB at 2kHz in 2dB steps. 
  Bass tone control : 9dB at 200Hz in 1dB steps.
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      8. Power supply

  15V from external AC adapter, current 300 to 500mA typical, 1A max. 30mA on 
  standby. 
  Can be operated on 12 to 15V DC with degraded performance at 12V, but EMC 
  compliance is not guaranteed with all types of supply.
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      9. Dimensions

  Case : 238 x 77 x 191mm (W.H.D) 
  Overall : 238 x 93 x 227mm (W.H.D) 
  Weight : 2.2kg.
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      10. Sensitivity

All measurements are p.d. at 50ohm input. Figures in brackets indicate R F 
pre-amp switched on. 
SSB and AM values are for 10dB S+N/N, NFM value for 12dB SINAD. 

      Freq.USB
      (2.2kHz filter) AM
      (5.5kHz filter) NFM
      (9.5kHz filter) 
      20 kHz1.9uV (1.4uV)--
      100kHz 0.73uV (0.34uV) --
      500kHz 0.50uV (0.18uV) 0.85uV (0.33uV) -
      1.0MHz 0.52uV (0.19uV)0.88uV (0.36uV) -
      1.8MHz 0.56uV (0.21uV)0.95uV (0.38uV) -
      5MHz 0.50uV (0.19uV)0.86uV (0.35uV) -
      14MHz 0.58uV (0.23uV)1.0uV (0.42uV)-
      28MHz 0.60uV (0.23uV) 1.0uV (0.40uV)1.2uV (0.48uV)
      32MHz 0.68uV (0.24uV)1.1uV (0.43uV)-

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      11. Selectivity

The following data is taken from measured performance of the 455kHz I F system 
and ignores effects of the 45MHz roofing filter and any audio frequency 
response. 
AGC was switched off. 

      Click to 
      enlargeFilter stop-band attenuation
      (all filters) > 110dB (Filter shown is 5.5kHz) 
      Click to 
      enlarge2.2kHz filter characteristics.
      -6dB bandwidth : 2.29kHz 
      -60dB bandwidth : 3.34kHz 
      -80dB bandwidth : 4.98kHz 
      6/60 shape factor : 1 : 1.46 
      Note action of I F tail filter below -70dB, at the 2.2kHz filter's 
      stop-band limit. 
      Click to 
      enlarge5.5kHz filter characteristics.
      -6dB bandwidth : 5.54kHz 
      -60dB bandwidth : 9.11kHz 
      -90dB bandwidth : 10.75kHz 
      6/60 shape factor : 1 : 1.64 
      Click to 
      enlarge7kHz filter characteristics.
      -6dB bandwidth : 6.90kHz 
      -60dB bandwidth : 11.60kHz 
      -90dB bandwidth : 13.36kHz 
      6/60 shape factor : 1 : 1.68

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      12. Dynamic range

Reciprocal mixing effects :
Quoted figure is unwanted signal strength, relative to noise floor, that 
decreases wanted signal S+N/N ratio by 3dB. 
Tested at 12.75MHz in USB mode with 2.2kHz filter. Wanted and unwanted signals 
both unmodulated. 
Noise floor : -123dBm 
      Signal separationSignal rejectionLocal osc SSB phase noise
      5kHz90dB-123dBc/Hz 
      10kHz99dB-132dBc/Hz
      20kHz109dB-142dBc/Hz
      50kHz119dB-152dBc/Hz
      100kHz>125dB< -158dBc/Hz

Blocking effects :
Quoted figure is unwanted signal strength that reduces wanted signal level by 
1dB (with no AGC action). Tested in USB mode with R F pre-amp switched off. 
Wanted signal at 20MHz, unwanted signal at 10.7MHz, both unmodulated. 

Blocking signal strength : +14dBm (1.12V) 
Blocking dynamic range : 137dB 

Intermodulation effects :
Quoted dynamic range figure is the difference between the receiver nose floor 
and the level of two equal unwanted signals required to produce an 
intermodulation product at the noise floor level. 
The IFDR figure here is calculated from measuring the intermodulation level 
produced by two signals at 0dBm, and verified by re-calculation at -5dBm. 
Tested at around 12.7MHz in USB mode with 2.2kHz filter and R F pre-amp switched 
off. 
Noise floor : -123dBm 
      Signal separation Intermodulation-freedynamic range3rd order intercept 
      point (IP3)
      5 / 10kHz92dB+15dBm
      10 / 20kHz100dB +27dBm
      20 / 40kHz 104dB+32dBm
      50 / 100kHz 104dB+33dBm
      100 / 200kHz 105dB+34.5dBm

Switching in the R F pre-amp reduces IP3 by about 10dB, and IFDR by about 2dB. 
Second order intermodulation effects :
Measured as above with two signals of 0dBm at around 12.7MHz, resolving the SUM 
frequency at 25.5MHz. 

Intermodulation-free dynamic range : 104dB 
2nd order intercept point : +85dBm
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      13. Spurious responses

Unwanted signal rejection :
Quoted figures are the levels of unwanted signal, relative to wanted, required 
to produce a similar S+N/N ratio. 
Many figures vary depending on the frequency the receiver is tuned to, so ranges 
of values are given. 

      Spurious responseFrequencyRejection
      1st I F 45MHz 85 to > 100dB
      2nd I F 455kHz > 100dB
      1st I F image Fr + 90MHz85 to > 100dB
      2nd I F image Fr + 910kHz> 95dB
      OthersFr  >10kHz> 85dB

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      14. AGC characteristics

 
      Click to
      enlargeSignal and Noise (AM mode)
      Click to
      enlargeAGC Attack : 
      Response to signal change from -90dBm to -60dBm (rise time 1ms)
      Click to
      enlargeAGC Decay : 
      Response to signal change from -60dBm to -90dBm (all modes)

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      15. Audio quality

In-band intermodulation :
For 2 signals more than 200Hz apart, all intermodulation products < -37dB. 

Harmonic distortion :
SSB modes, input signal at S9, THD < 0.2%. 
AM modes, input signal at S9, THD < 1.3%. 

Noise :
AM mode ultimate S/N ratio 52dB (unweighted).
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      16. Frequency stability

The receiver uses a single frequency reference which is a temperature 
compensated crystal oscillator. 

TCXO specification is 2.5 ppm from -30C to +75C, and will typically give a 
receiver stability better than 1ppm from 10C to 40C. 
Frequency stability from cold
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      17. Local oscillator phase noise

      Click to 
      enlarge

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      18. Optional filters

The AR7030 uses a second IF frequency of 455 kHz. Due to the automatic filter 
calibration of the receiver, it is electrically possible to fit almost any 455 
kHz filter with input/output impedance of 1,500 to 2,000 OHMS and a bandwidth 
smaller than 9 kHz whether it be ceramic, mechanical or crystal... the AR7030 
will take care of alignment and addition to the filter table for you. 
The PCB pattern has been designed to accept the Murata ceramic range of filters 
in the following format: "CFJ", "CFK", "CFW" and the Collins low profile 
mechanical filters. 
The receiver is supplied with FOUR filters fitted as standard, provision is made 
for a total of SIX. 
Standard fitted:
2.2 kHz (nominal) SSB CFJ455K14 See note A 
5.5 kHz (nominal) AM CFW455IT See note A 
7.0 kHz (nominal) AM wide CFW455HT See note A 
9.5 kHz (nominal) NFM CFU455G See note B 
Spare See note C 
Spare See note C 

Notes: 
A Will accept "CFJ", "CFK" or "CFW" 
B Fixed position for CFU455G only 
C Will accept "CFJ", "CFK", "CFW" or Collins low profile (or almost any other 
455 kHz filter connected by flying leads) 

Filter fitting sheet in PDF format.





MF300
      300 Hz (nominal) CW Collins 526-8733-010
      Centre Frequency 455  0.15 kHz
      3dB bandwidth 0.3kHz  60 Hz
      60dB bandwidth 1.0 kHz Max
      No: of resonators 7
      Pass-band variation 3 dB Max
      Insertion loss 10dB Max
      Spurious rejection  100 kHz 60dB Min

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MF500
      500 Hz (nominal) CW Collins 526-8634-010 (or 526-8693-010)
      Centre Frequency 455  0.15 kHz
      3dB bandwidth 0.5  0.1 kHz
      60dB bandwidth 2.0 kHz Max
      No: of resonators 7
      Pass-band variation 3 dB Max
      Insertion loss 6dB Max
      Spurious rejection  100 kHz 60dB Min

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CFJ455K8
      1.0 kHz (nominal) DATA Murata CFJ455K8
      Centre Frequency 455 kHz
      6dB bandwidth 1.0 kHz total
      70dB bandwidth 3.0 kHz
      Pass-band variation 1.5 dB
      Stop band att 455  100 kHz 60dB
      Insertion loss 8dB Max

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XTAL 2.4
      2.4 kHz (nominal) SSB CRYSTAL filter XTAL2.4 (455H2.4A)
      Centre Frequency 455 kHz
      6dB bandwidth  1.2 kHz
      60dB bandwidth  2.4 kHz Max
      No: of poles 8
      Pass-band variation 2 dB Max
      Insertion loss 6dB Max
      Spurious rejection  20 kHz 70dB Min

The XTAL2.4 requires use of the FL124 daughter board.
FL124: Daughter board for fitting crystal filters. Comprises a bracket and PCB 
designed to take up to 3 crystal filters. Patterned to accept Hy-Q, Kenwood & 
JRC etc. Supplied with connectors and cables to fit two filters as standard 
(using the optional Collins positions of the AR7030 PCB), capacitors and fitting 
sheet. Strongly recommended if fitting crystal filters to the AR7030.
Fitting sheet in PDF format.
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MF2.5
      2.5 kHz (nominal) SSB Collins 526-8635-010 (or 526-8694-010)
      Centre Frequency 455  0.15 kHz
      3dB bandwidth 2.5  0.1 kHz
      60dB bandwidth 5.2 kHz Max
      No: of resonators 8
      Pass-band variation 3 dB Max
      Insertion loss 5dB Max
      Spurious rejection  100 kHz 60dB Min

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CFK455J
      3.0 kHz (nom) SSB/AM Murata CFK455J
      Centre Frequency 455 kHz
      6dB bandwidth  1.5 kHz total
      70dB bandwidth  4.5 kHz
      Pass-and variation 3dB
      Stop band att 455  100 kHz 70dB
      Insertion loss 8dB Max

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MF4.0
      4.0 kHz (nominal) AM Collins 526-8710-010
      Centre Frequency 455  0.15 kHz
      3dB bandwidth 3.8 kHz minimum
      60dB bandwidth 10 kHz maximum
      No: of resonators 7
      Pass-band variation 3 dB Max
      Insertion loss 5dB Max
      Spurious rejection  100 kHz 50dB Min

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CFK455I
      4.0 kHz (nominal) AM Murata CFK455I
      Centre Frequency 455 kHz
      6dB bandwidth  2.0 kHz total
      70dB bandwidth  5.0 kHz
      Pass-band variation 3dB
      Stop band att 455  100 kHz 70dB
      Insertion loss 8dB Max

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MF6.0
      6.0 kHz (nominal) AM Collins 526-8636-010 (or 526-8695-010)
      Centre Frequency 455  0.3 kHz
      3dB bandwidth 5.5 kHz Min
      60dB bandwidth 11 kHz Max
      No: of resonators 8
      Pass-band variation 3 dB Max
      Insertion loss 5dB Max
      Spurious rejection  100 kHz 50dB Min

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      19. Block diagram

Click here to view in GIF format.
Click here to view in JPEG format.
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 Acrobat format PDF file of the RS232 Command Protocol
 
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Due to continuous developments, AOR reserves the right to make design and 
specification changes for product improvement without prior notice. The 
performance specification figures indicated are nominal values of production 
units. There may be some deviation from these values in individual units. 
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acknowledged. E&OE
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