SGC SG-237 Smartuner

SGC SG-237 Smartuner
Part Number: SG-237
RRP: £ 419.95
£399.99 ( £333.33 EXC. VAT )
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Product Information
  • Overview
  • Description


Built to Last

The SG-237 is designed with high density surface mount components on a 4 layer PCB, providing high efficiency, reliability and performance. The PCB is mounted on a sturdy chassis plate which provides an excellent electrical and RF ground system. The unit is fully waterproof (under 2 ft of water for 24 hours). The case is weather resistant, high grade ABS plastic that is sealed at the factory.


Use for base, mobile, portable, marine or aviation.

The SG-237 is our most popular Smartuner. It's rugged construction and small size allow maximum flexibility. It has a 100W power rating and additional frequency coverage to 60MHz, matching it perfectly with the most popular HF transceivers. It will work with any balanced or unbalanced antenna including whips, backstays, dipoles, loops and longwires, and requires a minimum of only 28 feet of antenna for full coverage operation.


  • HF Frequency Range: 1.8 to 60 MHz
  • Power Input Range: 3 to 100 watts (PEP) — 40 watts max. on CW
  • Input Impedance Range: 45 to 55 ohms
  • VSWR: (Typical) Typically less than 1.4:1
  • DC Input Requirement: + 13.8 VDC (nominal)
  • DC Operating Range: +10.5 to 18 VDC
  • Input Current: Average: 300 milli amps
  • Random set time: Typical: less than 2 seconds
  • Recurrent set time: Typical: less than 10 milliseconds
  • Memory Capacity: 170 locations
  • Antenna Length: Minimum length of 7 ft. - 3.5 to 60 MHz
    Minimum length of 23 ft. - 1.8 to 60 MHz
  • Installation: Any position
  • Operating Temperature: -35° to +70° C
  • Size: 9L x 7W x 1.85H inches (22.9L x 17.8W x 4.7H cm)
  • PCB 6L x 5.5W x 1.2H inches (14L x 15.24W x 3.05H cm)
  • Weight: 2 pounds (PCB 1.25 pounds)
  • Case Construction: ABS plastic cover on an anodized aluminum base
  • Control Cable: Shielded 4 conductor RG-58 coax with PL-259 connector
  • Control Cable Length: 9 feet in length

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