Model R4020


Two Band CW QRP Transceiver. Covers the 40 meter and 20 meter amateur bands. Receives SSB & CW. Transmits CW. The R4020 QRP transceiver is not manufactured by TEN-TEC.


  • LCD display indicates frequency, mode, supply voltage, S meter, RIT and more.
  • BNC RF connector
  • Sensitivity (typical): 0.8 micro volts. MDS 0.2 micro volts
  • Transmitter power: 5 watts (typical)
  • DDS synthesizers allow 5-16 MHz general coverage receive.
  • 20 frequency memory storage
  • Internal battery holders for eight “AA” alkaline batteries. An external (optional) 12 to 14 VDC regulated power supply may also be used.
  • Adjustable tuning steps for both Amateur bands and general short wave listening.
  • Current consumption: About 55 mA on receive or about 550-950 mA on transmit depending on supply voltage
  • Built in adjustable keyer with automatic CQ and call sign insertion for memory keying.
  • Use with straight key or your favorite key paddle.
  • Built in crystal filters for 2.2-1.6 kHz SSB or 900-400 Hz in CW
  • 8 ohm headphone output (requires stereo plug). No internal speaker.
  • RIT allows for 10Hz or 100 Hz tuning
  • Power Plug- 2.1mm ID x 5.5mm OD with center positive. The Radio Shack part number for an equivalent is 274-1567.
  • Size: 5.7” X 3.7” X 1.4” (not including knobs)
  • Weight: 15.8 oz (not including batteries)

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