Join Date: Aug 2006
Location: Arlington, VA
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If you go back and read my comments, and Eric's comments closely, most of your questions have been answered.
To simplify even further:
1. Connect the red wire on the SG-230 to a 12V plus source, using AWG18 or AWG 16 wire, and with a 1/2A fuse in line and a switch to turn the tuner on/off;
2. Connect the black wire to a 12VDC ground.
3. Run the coax (RG-8X or RG-213/214) between the radio and the tuner.
That's it. That's all you HAVE to do. Whistling into the mic on a clear frequency near the one you want to use will cause the tuner to tune.
If you want to use the tune lights, I'd buy the accessory SmartLock, and read all about it in the SG-230 manual.
A better solution, as I stated above, is to put a good Power/SWR meter in the coax line close to the radio. This will tell you all you need to know about the radio outputting power and the antenna system tuning. It is by far the best investment you can make. Much better than the "idiot lights" which, like those in a car, don't really tell you much at all.
Forget the Tune button on the M700. It's not required. I've had a bunch of M700's thru here, and in fact use one every day on the Nets. It's a very solid radio. Just ignore the tune button.
BTW, one of the nice things about the SG-230 tuner as compared to the Icom tuners is that it has lots of non-volatile memories. It doesn't "forget" the tune settings for any frequency you've previously used, unlike the Icom tuners which can only remember them for a short time.
One other thing: it's a very good idea to keep power leads as short as possible. If I were doing an install for you, I'd put a terminal strip very near the radio and run AWG6 wires from that strip directly to the house batteries, with a 30A fuse in both the positive and negative wires located close to the battery. Pulling power for a SSB set off the panel breakers is not a great idea, and tends to increase the potential for radio frequency interference (RFI) both from the radio to other onboard instruments, and from other onboard devices to the radio.
Last edited by btrayfors; 03-05-2010 at 08:31 AM.