SGC Antenna-Tuners
The American company SGC manufactures radios and accessories for the mobile use on shortwave. The products are primarily developed for commercial applications, making them extremely robust and 'foolproof' in operation. Plug-and-play is the motto...
For hams the following selection of automatic antenna tuners is very interesting. A bit more expensive, but you get your money's worth ...
| Product | SG-239 | SG-237 | SG-230 | SG-235 - no longer available | SG-231 - no longer available |
|---|---|---|---|---|---|
| HF Frequency Range | 1.8 - 30MHz | 1.8 - 60MHz | 1.6 - 30MHz | 1.8 - 30MHz | 1 - 60MHz |
| Power Input Range (PEP watts) | 1.5-200 | 3-100 | 3-200 | 3-500 | 3-100 |
| PEP SSB or CW (morse) Power (watts) | 200 | 100 | 200 | 500 | 100 |
| Continuous 'key down' Power (watts) | 80 | 40 | 100 | 250 | 60 |
| Input Impedance Range (Ω) | 45-55 | 45-55 | 45-55 | 45-55 | 45-55 |
| SWV (Typical) | <2:1 | <2:1 | <2:1 | <1.4:1 | <1.4:1 |
| DC Input Requirement (VDC) Nominal | 13.8 | 13.6 | 13.6 | 13.6 | 13.6 |
| DC Operating Range (VDC) | 10 to 18.5 | 10 to 18 | 10 to 18 | 10 to 18 | 10 to 18 |
| Input Current (average amps) | 0.23 | 0.3 | 0.9 | 1.4 | 0.5 |
| Random Set Times (seconds) | <2 | <4 | <2 | <2 | <4 |
| Recurrent Set Times(millisec) | <10 | <10 | <10 | <10 | <10 |
| Non-Volatile Memory Addresses | 170 | 170 | 500 | 170 | 170 |
| Total combinations using all elements | 1/8 million | half million | half million | half million | four million |
| Antenna Length operating higher than 3.3 MHz | 40 ft min. | 8 ft min. | 8 ft min. | 23 feet min. | 8 ft min. |
| Antenna Length operating from the lowest frequency to 3.3 MHz | 100 ft min. | 28 ft min. | 23 ft min. | 150 feet min. | 23 ft min. |
| configuration | Pi & L | Pi & L | Pi & L | Pi & L | Pi & L |
| Input Capacitance minimum | 50pf | 50pf | 100pf | 100pf | 50pf |
| Input Capacitance maximum | 3150pf | 6400pf | 6400pf | 6400pf | 6400pf |
| Inductance minimum | 0.25µH | 0.125µH | 0.25µH | 0.125µH | 0.125µH |
| Inductance maximum | 15.875µH | 32µH | 64µH | 32µH | 64µH |
| Output Capacitance minimum | 50pf | 12.5pf | 25pf | 12.5pf | 12.5pf |
| Output Capacitance maximum | 740pf | 200pf | 800pf | 400pf | 400pf |
| Installation | Any position | Any position | Any position | Any position | Any position |
| Operating Temperature (Celsius) | -35C to +70C | -35C to +70C | -35C to +70C | -35C to +70C | -35C to +70C |
| Environmental | None | Waterproof at immersion of two feet, half hour | Waterproof at immersion of two feet, half hour | Waterproof at immersion of two feet, half hour | Waterproof at immersion of two feet, half hour |
| Size Overall (inches) | 7.5Dx6Wx1.85H | 6Dx7Wx1.5H (5.5x6x1.7 PCB Only) |
16Dx12Wx3H | 16Dx12Wx3H | 11.5Dx9.5Wx1.7H |
| Size Overall (centimeters) | 19D x 15 W x 5H | 22.9D x 17.8 W x 3.8H | 40.6D x 30.5 W x 7.6H |
40.6D 30.5 W x 7.6H |
29.2D x 24.1 W x 4.32H |
| Gewicht (pounds) | 2 lbs. | <2 | 8 | 8 | 3.8 |
| Gewicht (kg) | .75 kg | <0.75 | 3.5 | 3.5 | 1.6 |
| Case Construction | Aluminium Case | Plastic ABS Waterproof case metal base |
Plastic ABS Waterproof case |
Plastic ABS Waterproof case |
Plastic ABS Waterproof case metal base |
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SG-237 Mini-Smartuner, antenna tuner 1,8-60MHz, 100WSGC Mini Smarttuner SG-237
Availability unknown
€477.00incl. VAT, plus shipping €400.84 -
Tune Control Unit for SG-230/237/239Tune Control Unit for SG-230 -237 -239 (as SGC Smartlock)
In stock, shipped in 1 to 2 days
€149.00incl. VAT, plus shipping €125.21 -
€298.00incl. VAT, plus shipping €250.42 -
€149.00incl. VAT, plus shipping €125.21
