CommsAudit System Controllers

2 Channel HF Narrowband Receiver

Product Number:CA7702
Operating Frequency:2MHz - 30MHz
RF Inputs:2

Details

The CA7702 narrowband HF receiver is a 2-channel version of the CommsAudit CA7704 high performance receiver. This model offers two independent receiver modules covering 2MHz to 30MHz.

HF Receiver

The architecture of the CA7702 narrowband HF receiver provides excellent dynamic range, and displays superior performance over wideband receiver systems - particularly in high signal level RF environments.

It features:

  1. 2 Independent tuner modules
  2. 2 - 30MHz, 1Hz tuning resolution
  3. Excellent SFDR (spurious free dynamic range) & blocking performance
  4. Gigabit Ethernet 1000BASE-SX
  5. 25kHz Bandwidth, switchable 7.5kHz
  6. Very fast tuning speeds
  7. Time stamped I / Q data (VITA-49.0)
  8. Switchable phase coherent mode
  9. BITE (Built In Self Test)

      10. Some applications are:

      1. HF Radio monitoring
      2. HF Communications Systems
      3. Aviation & Maritime Communications
      4. Signal Collection
      5. Direction finding
      6. Blind Signal Separation
      7. Beam forming

      The CA7702 platform can hold 2 HF narrowband receiver modules. Individual RF inputs of 2 - 30MHz are routed to each module. Within each module the analogue RF front end allows user definable gain, attenuation and filtering, after which the signal is digitised at a nominal bandwidth of 25kHz, and down-converted to baseband in the digital domain.

      The CA7702 uses high dynamic range 16-bit A/D converters. The data stream is made available as time- stamped complex I / Q data in VITA-49.0 format. Control and data output is via the fibre Gigabit Ethernet interface (1000BASE-SX).

      The CA7702 Narrowband Receiver provides the capability to operate 2 receiver modules in a phase coherent mode, selectable by software control. The CA7708 is able to accept a 1 Pulse per Second (1PPS) trigger, and 10MHz reference signal input.

      The CA7702 receiver platform is housed in a 1U 19" rackmount chassis, designed to operate in EMC sensitive environments. Power input is 90/240V 50-60Hz AC universal supply. The receiver has extensive Built In Self Test (BITE). BITE allows local or remote monitoring of receiver system status & health. The system supports multiple simultaneous users.

      Extended range version available offering world leading performance from 1.6MHz - 30MHz.

      Systems

      The CA7702 is ideally suited for use in HF Communications systems where transmit and receive operations are remote controlled.

      The CA7702 HF receiver is also ideally suited for HF radio monitoring and surveilance systems. See CommsAudit's signal analysis software - GIST.