10 kHz - 2600MHz
The experts have evaluated the AR5000 and have concluded that there is nothing in its class on today's market that comes close. The AR5000 has the competitive edge with wider frequency coverage, advanced circuit design, computer control of all functions, front end design, IF filtering, dynamic range, sensitivity, size & weight, power consumption and more. Following are more details of the AR5000 functions and features. And in addition, detailed specifications and a comparison of the AR5000 to the nearest competitor.

State of the art design using leading edge components enable the AR5000 to tune down to 10kHz and up to 2600MHz*. Imagine one small receiver tuning OMEGA navigation at 10-13kHz and instantly tuning to the 2.5GHz LEO satellite band.
All functions on the AR5000 are RS232 controllable. The AR5000 is a dream come true for those applications when remote and/or multi- receiver operation is desired.
Two banks of filters are employed, one at 10.7MHz and the other at 455kHz. Selecting an IF bandwidth switches both IF amplifier filters and provides a superior overall shape factor which reduces unwanted signals and interference, and improves both dynamic range and image rejection. No other receiver offers such advanced filtering techniques.
The AR5000 is supplied with 6 IF filter band widths (3,6,15,30,110, and 220kHz). A 7th position is open in the 455kHz for an optional 500Hz Collins CW filter. 30kHz is ideal for high speed data rates, 110 & 220kHz for higher data rates; 220kHz is also for FM SCA (sub-carrier) broadcasting and FM sound in both FM and T.V. audio channels. A 400kHz extra wideband FM filter and discriminator are under consideration. Supplied with a total of 12 IF filters, 6 in each IF.
The AR5000 comes standard with a highly accurate TXCO internal frequency standard of 2ppm over a temp range of 0-50 degrees C (32-121 degreees F). Other receivers in this class specify accuracy, but fail to mention any temperature range.
An FM Wide & Narrow fixed level discriminator output is provided for multiplex (MUX) signal processing; FMW sub-carrier and Hi speed data rates are typical applications.
A first for a receiver in this price range. Using an external source has several advantages. (1) Note the AR5000 has 1Hz resolution. At 1000MHz, 1Hz is 1 part in 109, use of a standard at least good to 1 part in 109 will make that last digit have full meaning. (2) It is desirable to use one master oscillator when two or more receivers are used in a system. Accuracy and phase stability is assured. (3) Diversity reception is possible using external master OSC. Diversity has been used for years on long haul HF circuits and can also be used in VHF/UHF applications. (4) Direction finding: One method of DF is "time of arrival" (or phase) of the received signal using two receivers. Using on master OSC assures both receivers will be coherent and in phase.
DTMF (built-in): DTMF tones are usually heard while monitoring telephone calls. The AR5000 will decode and display these phone numbers. DTMF tones are sometimes used to remotely control systems and for other applications.
VOICE INVERSION DECODER UNIT DS8000 (plug-in option): Voice inversion provides a low level of "voice scrambling" and the DS8000 will decode the audio and make it intelligible to the listener.
CTCSS unit CT5000 (plug-in option): Sub-audible squelch tone can be decoded, displayed, and stored in memory. It is possible to place a CTCSS tone into memory and scan for that tone; the receiver will not stop on a signal unless that tone is present. On community repeaters, there may be several users each with their own CTCSS tone, one may wish to monitor just one user by opening the squelch only on that users' CTCSS tone.
Hi pass filter 50, 200, 300, 400Hz; Low pass filter 3, 4, 6, 12kHz and thru position plus 4 time constants (25, 50, 75 and 750ms) are provided for FM de-emphasis. These features allow audio flexibility in all modes, previously not offered on a communications receiver.
compare the FM (narrow) sensitivity of the AR5000 with and you'll find the AR5000 unmatched, especially in the high end 1600 to 2600MHz.


A tracking front end pre-selector filter helpsreduce or eliminate interference from unwanted signals and increases sensitivity. This filter is auto-tracked from the CPU or can be manually tuned or RS232 controlled. Once the signal is peaked, the filter setting may be placed into memory for future use. Front end tracking filter tunes 0.5-1000MHz plus a high pass filter is used above 1000MHz and a low pass filter below 500kHz. Other receivers may offer preselect filters but no means of tuning or peaking a signal, thus reducing overall sensitivity specifications.
A low noise, high quality 10dB pre-amp is always ON below 230MHz and not used above 230MHz. The pre-amp combined with a 10dB attenuator provide a range of 20dB below 230MHz; the readout will indicate ATT 0, 10, 20dB. Above 230MHz readout is ATT 0, 10dB. These settings can be stored in each memory channel for future reference.
VCS is designed to eliminate the problem of scan-stop on an un-modulated carrier. Unless there is voice modulation present, the scan mode will continue past a signal. The VCS will also operate on modes other than FM(N), static crashes from thunder storms in the HF (2-30MHz) band often disrupt scanning. With VCS these false stops are greatly reduced.
One can scan memories, enter the desired dwell time, set AGC threshold level, voice squelch, for any memory and stop on carrier.
In remote applications, one may prefer not to have the receiver ON 100% of the time, to conserve power and/or reduce the possibility of detection. The AR5000 will accept a remote command to turn it ON or OFF.
Selectable in 100Hz steps from 400 to 1100Hz, the operator is able to tune CW and other digital signals to the correct frequency without changing the receiver's main tuning.
This jack provides audio output/input return (for use with external signal processing units), discriminator output (switchable from wide to narrow FM), and audio output with switching control of tape recorder.

The main knob provides tuning steps from 1Hz to 1MHz and a mechanical variable torque adjustment ideal for fine tuning of CW, SSB and digital signals. The second knob has "click" indents ideal for channel tuning and has step sizes of 100Hz, 1kHz, 10kHz, 100kHz, 1Mhz and X10 for rapid tuning.

Reception of CW, SSB and digital signals can usually be improved using the manual gain control (MGC). Reducing RF gain can eliminate receiver noise allowing only the signal above the noise floor to be copied. Large signals from nearby transmitters may drive a receiver into distortion in the AGC mode, however MGC will allow low distortion reception of nearby transmitter and high power signals. The squelch control is also used as the RF gain control (push "FUNC" then 6 [RF Gain]).
Typical application is to use port (A) 30MHz down and (B) 30MHz up, since the antennas are usually very different. One can also use either antenna port at any frequency. If working on the VHF bands, port (A) could be a discone omni-directional antenna and (B) a gain antenna with directivity, or switch between an HF active antenna and a longwire antenna. Port selection may be stored in memory thus assuring the proper antenna for any given frequency.
An optional external 4 port antenna switch box may be added to either antenna port providing a toatal of 5 antenna inputs. The possibility of using (2) AS5000 (one on each port) is under consideration. This would allow up to 8 antennas all switched from the front panel or remotely via RS232.
IF output 10.7MHz with 10MHz bandwidth, to drive several models of SDU, is provided plus these added features: (A) AGC on/off is unique and standard in the AR5000. Receivers in which the AGC cannot be defeated will produce poor results on any SDU due to the AGC pumping action. When a strong signal is received, the AGC action causes a reduction in receiver gain and all signals displayed on the SDU screen are reduced until that signal is no longer in the receiver band pass. In a busy band, the AGC pumping action is very undesirable. (B) Pre and Post IF filtering: The user may switch the IF output to Pre or Post position of the 10.7MHz filtering, Pre filtering for wide sweeps and Post filtering for narrow sweeps, thus taking advantage of the filter to narrow the spectrum of interest. (C) The AR5000 CPU can be controlled by the SDU5000 keyboard. This digital linking of these two units allows signal monitoring never offered in an instrument of this class. In turn, the SDU5000 may be controlled by a PC computer thus producing a very powerful, low cost intercept system.
2100 Pass frequencies may be placed into storage. This allows the user to lock out up to 2100 frequencies not of interest. Pass frequencies do not use any memory channels. In most scanning receivers, one must place a frequency into memory and then write-in "pass". Each pass takes away another memory channel, but not in AR5000.
To aid the user in getting started, AOR has programmed 100 memory channels and 10 search banks. Each memory channel includes frequency, mode and alpha-numeric text to identify each station or band. Examples: (CH7)5.995MHz Mode(AM) "VOA", (CH11)17.765MHz Auto (AM) "Germany", (CH16)7.295MHz Auto(LSB) "40MTHAM", (CH45)203.75MHz Auto(FMW) "TVCH11". (CH72)467.875MHz Auto(FMN) "BUSINESS". 10 search banks are also pre-programmed. Example: search(2)88-108 (mode)auto (text)FM BCB, search(3) 118-136 (mode)auto (text)aircraft. At any time the pre-programmed memories may be re-programmed by the user.
Five (5) VFO's are available. The VFO indicator is in the lower right of the readout, VA, VB, VC, VD, VE. Each VFO has in memory: freq., step size, filter bandwidth, antenna port and attenuator and/or pre-amp. One can have VFO(A) set for 800kHz, 6kHz BW, AM Mode, 10kHz Step, Ant#1 and attenuator 10dB. VFO(B) could be 146MHz, 6kHz, FMN, Ant#2, Pre-amp ON, and so on.


Model                      AR5000
Frequency range            10KHz - 2600MHz
Receive modes              AM, FM, USB, LSB & CW
Nominal filter bandwidths  3KHz, 6KHz, 15KHz, 30KHz, 110KHz &
                           220KHz (provision for 500Hz option)
Tuning                     NCO 1Hz to 999.999999KHz

Typical Sensitivity
10 - 20 MHz                0.56uV AM 6KHz filter 10dB S/N
                           0.25uV SSB 3KHz filter 10dB S/N
                           0.36uV FM 6KHz filter 12dB SINAD
                           0.40uV FM 6KHz filter 12dB SINAD
90 - 150 MHz               0.50uV AM 6KHz filter 10dB S/N
                           0.20uV SSB 3KHz filter 10dB S/N
                           0.25uV FM 6KHz filter 12dB SINAD
                           0.28uV FM 15KHz filter 12dB SINAD
                           0.50uV FM 30KHz filter 12dB SINAD
                           0.80uV FM 110KHz filter 12dB SINAD
                           1.12uV FM 220KHz filter 12dB SINAD
400 - 700 MHz              0.56uV AM 6KHz filter 10dB S/N
                           0.23uV SSB 3KHz filter 10dB S/N
                           0.28uV FM 6KHz filter 12dB SINAD
                           0.32uV FM 15KHz filter 12dB SINAD
                           0.50uV FM 30KHz filter 12dB SINAD
                           0.80uV FM 110KHz filter 12dB SINAD
                           1.25uV FM 220KHz filter 12dB                    
1.6 - 2.6 GHz              0.36uV AM 6KHz filter 10dB S/N
                           0.14uV SSB 3KHz filter 10dB S/N
                           0.20uV FM 6KHz filter 12dB SINAD
                           0.22uV FM 15KHz filter 12dB SINAD
                           0.40uV FM 30KHz filter 12dB SINAD
                           0.63uV FM 110KHz filter 12dB SINAD
                           0.90uV FM 220KHz filter 12dB SINAD
Memory channels            1000 (100ch x 10 banks)
Search banks               20 banks
Memory scan speed          25 or 45 channels per second (max)
Search speed               25 or 45 increments per second (max with step
                           size of 100KHz or less)
PASS frequencies           2100 total
Antenna inputs             50 Ohm unbalanced. N-type & SO-239
Audio output               1.7 Watts into 8 Ohms (@13.5V)
                           @ 10% distortion
Power requirements         nominal 12V d.c. @ 1A or less
Size                       8.6" x 4" x 10.3" (W.H.D.) approx.
Weight                     7.6 lbs.
Features and specifications subject to change

For years AOR has been a leader in the design and manufacture of high performance scanners. Building on their vast experience is the all new AR5000. Features that radio users have wished for are now a reality. Every effort to produce the world's finest wide band, low cost professional receiver has been made. The latest design in components and circuit design has been utilized. There is nothing like the AR5000 on today's market. Professional users are amazed at the 2-30MHz HF performance. Copy of CW, SSB and other signals in this crowded spectrum will please the most discriminating listener. VHF & UHF reception is exceptional compared to any available scanning receiver. The RF world is pushing to higher frequencies. The 1500 to 2500MHz spectrum is waking up and you won't want to miss these new services. The 2400-2500MHz band is now becoming very active with many manufacturers producing wireless equipment.

Recently a new receiver has been introduced to the market. This receiver appears to be the AR5000's closest competitor. For over a decade the manufacturer of this new receiver has dominated the high end UHF/VHF scanning receiver market with three models. These three receivers have several things in common with their new receiver: Block conversion above 1000MHz, CI-V multi-receiver computer control, external AC power supply, I.F. output 10.7MHz, bandwidth 10MHz and more. Key features in their new receiver are: both RS232 and CI-V computer control, improved audio output, audio peak filter (APF), I.F. shift for variable bandpass, auto freq. control (AFC) to 'lock' unit on to an unstable frequency, tape recorder control, (2) HF antenna inputs SO-239 50ohm & RCA 500ohm and (1) VHF/UHF type N.

AR5000 vs. Nearest Competitor
Items AR5000 Nearest Competitor
Coverage: 10kHz-2600MHz 100kHz-2000MHz
Spec: FULL .1-1000 & 1240-1300MHz
Memory: 1000 CH, 10 Banks 1000 CH, 20 banks
Pass Freq: 2100 CH 100 CH
Search Banks: 20 10
RS232: Yes Yes + CIV
Scan/Search: 25 or 45 channels/sec. max. 40 channels/sec.
Sensitivity: <30MHz SSB .25uV <30MHz SSB .25uV
>30MHz FMN .25uV SINAD >30MHz FMN .5uV SINAD
Selectivity: 3,6,15,30,110,220kHz (opt. .5kHz) >2.2,5.5,12,150kHz
Stability: >30MHz=2ppm >30MHz=3ppm (opt.=.6ppm)
(32-120 deg. F) No temp. specs
Ant. ports: (2) Type N & SO-239 (2)<30MHz SO-239/RCA 50/500ohm
switchable 1Hz - 1MHz any step (1)>30MHz (1) type N, no switching
Antenna expansion: Yes, to 8 antennas No
Pre-Amp/Attenuator: Yes/10dB, memory set Yes/10dB
Pre-selector: Yes, manual/RS232 override Yes, no override control
Auto Freq. Control (AFC): Optional AM/FM Yes, FM only
Dual Tuning: Yes, large/small knobs No, large knob only
Tuning Steps: 1Hz - 1MHz any step 10Hz - 1MHz fixed steps
RS232 Steps: 1Hz - 1MHz any step .5 - 200kHz in .5kHz steps
Mute: Yes No
VFO: 5 2
BFO offset: Yes, 8 steps 100Hz each  No
Freq. offset: Yes, 48 storable in memory No
Ext. OSC: Yes, 10MHz input No
IF shift: No Yes, on HF only
SDU ready: Yes, w/filter select Yes, on HF only
Discriminator: Yes, output thru ACC1 jack No
Front panel out: Audio Out/In, Disc. recorder control Audio out, Recorder control
Decoders: Yes, DTMF (std.), CTCSS (opt.) No
Voice Inversion (opt.) No
TV/FM Stereo Adapter: Yes, optional Yes, optional
Multi Receiver control: Yes, optional Yes, CT-17 option
Auto bandplan: Yes, 100 freq., 10 search No
Memory backup: EEPROM EEPROM
Audio Controls: Hi/Lo pass FM de-emphasis Audio Peak Filter
AGC Output: Yes Yes
Voice Synthesizer: No Yes, optional
Audio Peak Filter: No Yes, HF CW only
Audio output power: 1.7W @ 10%IMD 2W @ 10%IMD
Remote Power ON/OFF: Yes, ON/OF via RS232 Yes, ON/OFF via RS232
Power AC external: 220VAC, 13VA 220VAC, 28VA
Power DC: 13.8V 1.2A max. 13.8V 2A max.
Size (Volume): 275 cu. in. w/o spkr 607 cu. in.
Dimensions/WT: 8.6"x4"x10.3"WHD, 7.6 lbs. 11.3"x4.4"x12.2"WHD, 15.2 lbs.

NOTA:     1" (1 pollice) = 2.54 cm.