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IC-RP4020 - 440 MHz Amateur Repeater

 

Quick Specs:
440 MHz amateur repeater
RX/TX: 430-450 MHz
Output power: 10 W, 25 W, 50 W (depending on version)
Modes: FM
Receiver sensitivity: 0.32 µV (FM, 12 dB SINAD)

Detailed Specifications

ADDITIONAL FEATURES

An advanced CPU and other ICs in the IC-RP4020 logic circuit allow remote control using a DTMF code as follows:

  • CTCSS decoder on/off
  • CTCSS encoder on/off
  • CTCSS decoder frequency setting
  • CTCSS encoder frequency setting
  • Local inhibit function on/off
  • Manual ID signal transmission
  • ID signal transmission speed setting
  • Time-out timer setting
  • Drop delay timer setting
  • Repeater-pausing time after time-out setting
  • CPU resetting
  • Operating frequency fine adjustment
  • 3 auxiliary control outputs on/off

GENERAL

  • Frequency Coverage: 430~450 MHz
  • Mode: F3 (FM)
  • Initial tuning step: 5 or 12.5 kHz selectable
  • Antenna impedance: 50 ohms (unbalanced)
  • Power Supply Requirement: 100~120 V AC
  • Current drain (at 13.8 V DC):
    Transmit:
    10 W version: 7.0 A
    25 W version: 10.0 A
    50 W version: 17.0 A
    Receive (squelched): 1.0 A
    Receive (max. audio power): 1.2 A
  • Usable Temperature Range: -10°C ~ +60°C; +14°F ~ +140°F
  • Frequency stability: ±1.0 ppm (-10°C ~ +60°C; +14°F ~ +140°F)
  • Dimensions (projections not included): 425(W) x 149(H) x 368(D) mm; 16.7(W) x 5.9(H) x 14.5(D) in
  • Weight: 17 kg; 37.5 lb

TRANSMITTER

  • Output power:
    10 W version: 10 W
    25 W version: 25 W
    50 W version: 50 W
  • Modulation system: Variable reactance frequency modulation
  • Max. frequency deviation: ±5.0 kHz
  • Spurious emissions: Less than -60 dB
  • Microphone impedance: 600 ohms

RECEIVER

  • Receive system: Double-conversion superheterodyne
  • Intermediate frequency:
    1st: 30.875 MHz
    2nd: 455 kHz
  • Sensitivity (for 12 dB SINAD): 0.32 µV
  • Squelch sensitivity: Less than 0.25 µV
  • Selectivity: More than 15 kHz/-6 dB; Less than 30 kHz/-60 dB
  • Spurious rejection: More than 60 dB
  • Audio output power: More than 1.7 W at 10% distortion with a 8 ohms load.
  • Audio output impedance: 8 ohms
 
 
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