Additional AOR AR7030 Technical Specifications
Supplied by AOR (UK) Ltd. |
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 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.
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.
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 passband shift
Tuning and memory operations
Computer remote control of all functions via 1200 baud, RS232 type interface via 5-pin, 240
DIN connector.
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.
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.
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 kHz
9.5 kHz (default for NFM mode)
Provision for two more optional filters (at 455kHz) of any bandwidth from 250Hz to 10kHz.
Passband 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 / 50.
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 8 ohms.
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.
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.
9. Dimensions
Case: 238 x 77 x 191mm (W.H.D)
Overall: 238 x 93 x 227mm (W.H.D)
Weight: 2.2kg.
10. Sensitivity
All measurements are p.d. at 50 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.
| Frequency
| USB
2.2KHz filter
| AM
5.5KHz filter
| NFM
9.5Khz filter
|
| 20KHz | 1.9uV (1.4uV) | - | - |
| 100Khz | 0.73uV (0.34uV) | - | - |
| 500KHz | 0.5uV (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) | - |
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.
Filter stop-band attenuation.
(all filters) > 110dB (Filter shown is 5.5kHz)
2.2kHz filter characteristics.
-6dB bandwidth - 2.29kHz
-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 stopband limit.
5.5kHz filter characteristics.
-6dB bandwidth - 5.54kHz
-60dB bandwidth - 9.11kHz
-90dB bandwidth - 10.75kHz
6/60 shape factor - 1 : 1.64
7kHz filter characteristics.
-6dB bandwidth - 6.90kHz
-60dB bandwidth - 11.60kHz
-90dB bandwidth - 13.36kHz
6/60 shape factor - 1 : 1.68
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 separation | Signal rejection | Local osc SSB phase noise |
| 5kHz | 90dB | -123dBc/Hz |
| 10kHz | 99dB | -132dBc/Hz |
| 20kHz | 109dB | -142dBc/Hz |
| 50kHz | 119dB | -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-free
dynamic range
| 3rd order intercept
point (IP3) |
| 5 / 10kHz | 92dB | +15dBm |
| 10 / 20kHz | 100dB | +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
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 response | Frequency | Rejection |
| 1st I F | 45MHz | 85 to > 100dB |
| 2nd I F | 455kHz | > 100dB |
| 1st I F image | Fr + 90MHz | 85 to > 100dB |
| 2nd I F image | Fr + 910kHz | > 95dB |
| Others | Fr ± >10kHz | > 85dB |
14. AGC characteristics
Signal and Noise (AM mode):
AGC Attack : Response to signal change from -90dBm to -60dBm (rise time 1ms).
AGC Decay : Response to signal change from -60dBm to -90dBm (all modes).
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).
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.
17. Local oscillator phase noise
18. AR7030 block diagram
19. 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 (see filter plots):
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)
Optional Filters
| 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 |
| Passband variation | 3 dB Max |
| Insertion loss | 6dB Max |
| Spurious rejection ± 100 kHz | 60dB Min |
| 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 |
| Passband variation | 3 dB Max |
| Insertion loss | 5dB Max |
| Spurious rejection ± 100 kHz | 60dB Min |
| 4.0 kHz (nominal) AM |
| Data not available at this time
|
| 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 | 11.0 kHz Max |
| No: of resonators | 8 |
| Passband variation | 3 dB Max |
| Insertion loss | 5dB Max |
| Spurious rejection ± 100 kHz | 50dB Min |
| 1.0 kHz (nominal) DATA Murata CFJ455K8 |
| Centre Frequency | 455 kHz |
| 6dB bandwidth | 1.0 kHz total |
| 70dB bandwidth | 3.0 kHz |
| Passband variation | 1.5 dB |
| Stop band att 455 ± 100kHz | 60dB |
| Insertion loss | 6dB Max |
| 3.0 kHz (nominal) SSB/AM CFK455J |
| Centre Frequency | 455 kHz |
| 6dB bandwidth | ± 1.5 kHz total |
| 70dB bandwidth | ± 4.5 kHz |
| Passband variation | 3 dB |
| Stop band att 455 ± 100kHz | 70dB |
| Insertion loss | 8dB Max |
| 4.0 kHz (nominal) AM Murata CFK455I |
| Centre Frequency | 455 kHz |
| 6dB bandwidth | ± 2.0 kHz total |
| 70dB bandwidth | ± 5.0 kHz |
| Passband variation | 3 dB |
| Stop band att 455 ± 100kHz | 70dB |
| Insertion loss | 8dB Max |
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