AOR AR5000A+3U

Triple-conversion receiver is acclaimed for its strong-signal handling, high sensitivity, sharp selectivity, extraordinary frequency coverage (10 kHz-3000 MHz), compact size, frequency accuracy, long-term stability, and durability. Superior quality and selectivity to 1 Hz ! Now, the legend is further 3 steps ahead with
"AFC (Automatic Frequency Control)" , "Noise Blanker" and "Synchronous AM Detector"

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FEATURES

• Frequency Range: 10kHz-3000MHz
• Modes: AM, AM Synch, NFM, WFM, USB, LSB/CW
• Five Independent VFOs
• Temperature Compensated Crystal Oscillator (TCXO)
• Numeric Controlled Oscillator (NCO) provides 1 Hz tuning increments
• 10 MHz External Input Jack for coherent operation of multiple receivers
• Switchable Preamplifier with 10 dB Auto/Manual Attenuator
• 2000 Memory Channels: 10 Banks; 1 Priority Channel
• 20 Search Banks with Auto-Memory Store of search-discovered frequencies
• Scan/Search Speed 45 channels/second (max.)
• 2100 PASS Frequencies may be stored in EEPROM
• Auto-Mode Bandplan
• Frequency Offset facility
• Audio Low Pass & High Pass Filters (selectable)
• DTMF Decoder
• Liquid Crystal Display: 8 Alphanumeric Characters
• Dual-Time Clock with On/Off Timer
• Analog S-meter
• RS-232C Port: Baud Rate 4800, 9600, 19200 selectable
• The Pre-selection may be manually adjusted to reduce interference from off-frequency signal overload.
• 10.7 MHz (10 MHz wide) IF Output allows external pre-detection signal processing and spectrum display operation (as provided by the optional companion SDU5500).
• Automatic Frequency Control (AFC)
• Noise Blanker
• Signal Strength Digital Information: AGC derived, 256 steps
• The original AR5000 provided frequency coverage to 2600MHz, the 'A' version has increased range
  to 3000MHz (3GHz), also squelch controlled audio on ACC1 for voice operated tape recorders, 'A+3B' version has Synchronous AM,
  Automatic Frequency Control, Noise Blanker.

  Synchronous AM Synchronous AM is a useful tool to help reduce distortion due to selective fading, in particular on the short wave bands (long & medium wave bands too). In synchronous AM, original carrier is phase locked to a stable internally generated synthetic reference which is used to replace the (variable) original carrier resulting in more stable reception with greater recovered audio, especially during deep fades. A wide lock range is provided by this detector to enable simple, quick & efficient operation (unlike some other synchronous units on the market which require extremely accurate tuning).

  SAM	Synchronous AM double side band
  SAL	Synchronous AM lower side band
  SAH	Synchronous AM upper (higher) lower side band

  AM transmissions are constructed of a carrier and both upper & lower sidebands. Usually both side bands carry the same information so both or either may be selected with the same recovered resulting audio, however when adjacent interference is present, selecting synchronous single side (SAL or SAH) can provide improved results.

  
  Automatic Frequency Control (A.F.C.) Automatic frequency control is a "global" facility, either OFF or ON (default is OFF). When, A.F.C. is used in AM, FM and synchronous AM modes, the receiver is automatically tuned on to the center frequency to provide the best signal strength and recovered audio. When used in synchronous AM modes, AFC ensures that the signal is pulled within lock range for no-fuss operations. AFC is particularly useful on the VHF-UHF bands to ensure that the AR5000 is receiving spot on frequency, especially when searching through unusual bband plans or when the exact band plan is not known.

  
  Noise Blanker The Noise blanker is another "global" facility, either OFF or ON (default OFF). This facility is particularly useful to help reduce impulse noise and interference from vehicles ignition systems, whether from passing traffic or while the AR5000 is fitted into a mobile installation.

   

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TECHNICAL SPECIFICATIONS

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