FS: SGC model # SG-230 Microprocessor Controlled Automatic Antenna
Coupler, in very good condition, with cables, original manual and the
SGC "HF SSB User's Guide" book. This automatic antenna coupler runs on
12V DC and works 1.8 to 30 MHz, with a wire or whip antenna. It was
used to tune a long wire indoor antenna, so it has not been used
outside and is in very good condition. It is the later model version
SG-230 with the Plastic ABS case (not the earlier metal case).

See the www.sgcworld.com site for detailed info and a downloadable
user's manual on this unit. There is also a .pdf document about how to
use this tuner with the ICOM IC-706 series (all) radios on their web
site.

Some of the specifications:

Model SG-230 SmartunerTM automatic microprocessor antenna coupler.
Coupler can be used within its power rating with any HF Transceiver in
range of 1.6-30 MHz.
Designed for marine, portable and fixed base applications.
For antenna types: 23 ft marine whip for 1.6 to 30 MHz and with 9 ft.
minimum antenna for 3-30 MHz operation.

Frequency range: 1.6-30 MHz
Power rating: 150 watts PEP maximum: 12VDC. operation
VSWR (Typical): 2:1
Tune power: 3 watts nominal
Weight: 8 Lbs.
Dimensions: 16Dx12Wx3H
Supplied with cable for coaxial and DC power

Price is $300 plus shipping (new price is $595).