SG-230 1.6-30 MHz Smartuner Antenna Coupler 
  • Frequency range: 1.6-30 MHz 
  • Power rating: 200 watts PEP maximum: 12VDC. operation 
  • VSWR (Typical): <2:1 
  • Tune power: 3 watts nominal 
  • Weight: 8 Lbs. 
  • Dimensions: 16Dx12Wx3H 
  • Coupler can be used with any HF Transceiver in range of 1.6-30 MHz.
  • Supplied with 9 ft. cable for coaxial and DC power.  No "special" wiring required,
    • Coax output from radio
    • 12 VDC (under 1 Amp)
  • Designed for marine, portable and fixed base applications. 
  • Perfect for Condo's or areas that restrict antennas
  • Antenna types for 1.6-30 MHz:
    • SG-303 Whip (~8.5 Ft Long)
    • 23 ft marine whip for 1.6 to 30 MHz
    • 9 ft. minimum antenna for 3-30 MHz operation 
SG-230 Smart Pro 1.6-30 MHz
  • Same Features as SG-230 Smartuner, plus:
    • More powerfull and much faster processor, with a much more sophisticated algorithm offers finer tuning resolution and lower SWR.
    • RS-232 interface with windows software. Allows computer control of the unit, and provides a graphic indication of the ¼ (pi) network and the L/C values.
    • Receiver pre amp 12 dB.
    • Same size as the SG-230, and suitable for all applications as the 230.
SG-235 500 Watt Antenna Coupler
  • Same Features as SG-230 Smartuner with 500 Watts PEP Power rating,
  • Use with SG-500, 500 Watt Power Amplifier
SG-231 1.0-60 MHz Smartuner Antenna Coupler
  • Frequency range: 1.8-60 MHz 
  • Power rating: 100 watts PEP maximum, 60 Watts max on CW
  • 13.8 VDC. operation 
  • VSWR (Typical): <1.4:1 
  • Tune power: 3 watts nominal 
  • Weight: 2 Lbs. 
  • Dimensions: 9Dx7Wx1.5H 
  • Coupler can be used with any HF Transceiver in range of 1.8-60 MHz.
  • Supplied with 9 ft. cable for coaxial and DC power.  No "special" wiring required,
    • Coax output from radio
    • 12 VDC (300 milli-Amp)
  • Designed for marine, portable and fixed base applications. 
  • Perfect for Condo's or areas that restrict antennas
  • Antenna types for 1.6-30 MHz:
    • SG-307 Whip (~8.5 Ft Long)
    • 23 ft marine whip for 1.8 to 60 MHz
    • 9 ft. minimum antenna for 3-60 MHz operation 
SG-237 1.8-60 MHz Smartuner Antenna Coupler
  • Same Basic Features of the SG-231 except:
    • Not controllable from ICOM IC-706 or ALINCO DX-70
    • Reduced Frequency range of 1.8-60 MHz vs. 1.0-60 MHz.
    • Reduced number of tuning combinations (1/2 instead of 4 million tuning combinations), therefore difficulty may arise in tuning some frequencies/antenna combinations.
    • Reduced power capability of  40 Watts CW