SGC SG-239 Smartuner

SGC SG-239 Smartuner
Part Number: SG-239
£259.95 ( £216.63 EXC. VAT )
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Product Information
  • Overview
  • Description

Low Cost Smartuning

Get quality performance from a low cost package. The SG-239 will operate from 1.8 to 30MHz with 1.5 to 200W. It has over 130,000 possible tuning combinations and 170 memory bins for fast, accurate tuning. Like all Smartuners, it gives you the most flexibility because it will work with any antenna and any transceiver. It also has push buttons for a manual tune option. It weighs only 2 pounds, so you can use it for base, or portable!


HF Frequency Range: 
Power Input Range:
Input Impedance Range:
DC Input Requirement:
DC Operating Range:
Input Current:
Recurrent set time:
Memory Capacity:
Possible Tuning Combinations:
Antenna Length:

Operating Temperature:
Case Construction:
Control Cable:
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1.8 to 30 MHz
1.5 to 200W (PEP) and 80W (continuous)
45 to 55 ohms
Typical: Less than 2:1
+13.8 VDC (nominal)
+10.5 to 18 VDC
300 milli Amps
Typical: Less than 2 seconds
Typical: Less than 10 milliseconds
170 non-volatile locations
Minimum lengths: 40 feet(3.3 to 30 MHz) 
100 feet(1.8 to 30 MHz)
Any position, ideal at antenna feed point
-35 to +70 degrees C
7.5L x 6W x 1.85H inches
2 pounds
Aluminum case with exposed PCB*
No cables supplied

*Requires extra protection for installation outdoors.


Compare Smartuner Specifications.
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technical notes on the SG-239.
Review magazine articles and press releases.

The new SG-239 fits the coupler requirement of the many low cost HF transceivers on the market, including among others, Scout, Yaesu FT-817, Kenwood TS-50, Icom IC-706, and the K2 kit. Of course, the SG-239 is ideal with the legendary SG-2020 transmitter.

Performance features of the SG-239 are far ahead of its low price tag. The unit will work with silent receiver tuning or within the range of 1.5 to 200 watts with a high power transceiver. It has 170 memory bins, with fast, accurate tuning via independent sensors, including VSWR, phase, magnitude, low impedance, and forward sensing. Other couplers only sense the VSWR for a proper match the SG-239 does it all and does it fast. And, if you recall the tuning setting from memory, tuning is even faster.

The SG-239 utilizes the respected technology of the very popular SGC Smartuners. This new low cost and high performance product will offer radio amateurs an opportunity to achieve increased levels of operation with any HF equipment.
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