SGC 239 Smartuner Remote Antenna Tuner, 200W, 160-10M ATU

SGC 239 Smartuner Remote Antenna Tuner, 200W, 160-10M ATU

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Greyline Performance is pleased to offer SGC Smartuner HF ATU remote tun1ers.

SGC is Made in the USA, Smart, Strong, and Elegant. Truly high-end and rugged.  

Very popular with the marine industry for the isolated RF and DC grounds allow for less RF or common mode current at the radio. Tuners are generally hard to get wrong. That said, the quality of the inner workings are rated for power and are NOT the lower-end, cost-effective-focused tuners we see in all the magazines. Radio ops that desire the very best quality available and Made in America buy SGC.

You want quality, this is it. They are military-grade, Made in the USA, marine industry-rated, autotuners, and are highly recommended for use with Greyline HF vertical antennas, and stealth HOA Flagpole Antennas. Built to last. 


SG-239 Smartuner™


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:

1.8 to 30 MHz
1.5 to 200W (PEP) and 80W Digital
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

*As the ABS weatherproofing is not provided in this model, it does allow for an custom enclosure options. 


Pro Tip: Add the DC/DC Coaxial Line Isolator
to remote control the SGC RF tuning unit over your feedline coax. That means, no extra control cabling other than your coax to the antenna site.  




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