Amateur HF Transceivers 

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703 Preliminary Specifications

General
  • Frequency Coverage:
    • Receive:
      0.030 - 60 MHz*,
    • Transmit:
      1.8 - 1.999 MHz*
      3.5 - 3.999 MHz*
      7.0 - 7.300 MHz*
      10.1 - 10.150 MHz
      14.0 - 14.350 MHz
      18.068 - 18.168 MHz
      21.0 - 21.450 MHz
      24.89 - 24.990 MHz
      28.0 - 29.700 MHz
      50.0 - 54.000 MHz*
      * Varies according to version
  • Mode: USB, LSB, CW, RTTY (FSK), AM, FM, WFM (Rx only)
  • Number of memory channels. : 105
  • Antenna connector : SO-239
  • Power supply requirement: 9-15.8 VDC (negative ground)
  • Frequency stability: ?0.5 ppm
  • Current drain: Transmit max. power 2 A; Receive 450 ma, Receive standby 250 ma (DSP off)
  • Usable temperature range : -10?/sup>C to 60?/sup>C (14?/sup>F to 140?/sup>F)
  • Dimensions (projections not included):
    • 167(W) x 58(H) x 200(D) mm
    • 6-9/16(W) x 2-9/32(H) x 7-7/8(D) inches
  • Weight: 2 kg (5 lb)
  • CI-V connector: 2 conductor, 3.5 (d) mm (1/8")
  • ACC connector: 13 pin

 
Transmitter
  • Output power:
      SSB/CW/RTTY/FM AM
    13.8 VDC 0.5 - 10 W 4 W
      9.6 VDC 0.5 -   5 W 2 W
     
  • Modulation system:
    LSB/USB Balanced modulation
    AM Low level modulation
    FM Variable reactance modulation
     
  • Spurious emissions: Less than -50 dB (below 30 MHz), -60 dB; above 50 MHz.
  • Carrier suppression: More than -40 dB
  • Unwanted sideband: More than -50 dB
  • Microphone connector: 8 pin modular jack (600 ohm KEY connector: 3-conductor 6.35 (d) mm (1/4")

 
Receiver
  • Receive system:
    • SSB/CW/AM/WFM: Double superheterodyne
    • FM: ? superheterodyne
     
  • Selectivity (normal setting)
    SSB, CW More than 2.4 kHz/- 6 dB
      Less than 4.5 kHz/ -60 dB
    AM/FM-N More than 8.0 kHz/-6 dB
      Less than 30 kHz/-50 dB
    FM More than 12 kHz/-6 dB
      Less than 30 kHz/-60 dB
     
  • Spurious and image rejection ratio:
    • More than 70 dB
  • Audio output power (at 13.8 VDC): More than 1.0 W at 10% distortion with an 8-ohm load
  • RIT variable range +/-9.99 kHz
  • PHONES connector: 3-conductor, 3.5 (d) mm (1/8")/8 ohms
  • EXT SP connector: 2-conductor, 3.5 (d) mm (1/8") 8 ohms

Specifications are subject to change without notice or obligation.