It is all automatic. AM, RTTY or CW. Any constant carrier mode. It will also tune on SSB voice if you wish, but that isn't the best. The processor does a frequency analysis and tunes accordingly.
It is well outlined here on SGC's web site. http://www.sgcworld.com/SideAd06.html and http://www.sgcworld.com/generalsmartFAQ.html These are not hobby grade tuners like ham ones we use (Icom, Kenwood, Yaesu or even LDG). These are commercial and military grade tuners. I have used 4 of them on and off over the years when I need a tuner. However, today, I only use resonant antennas and eliminate the need for a tuner. I have 1 SGC259 as a spare in case I need it for an emergency. It is on my 2nd antenna port on my flex radio at my remote base. http://www.eham.net/reviews/detail/1509 http://www.sgcworld.com/239ProductPage.html There is an SGC user group you can join. Most of the Marine guys use them as well. Mike va3mw On Sun, Apr 9, 2017 at 10:11 AM, Jim Allen <jalleninv...@gmail.com> wrote: > How does the SGC tuner know whether you are sending a signal to tune or to > radiate? > > Why must it be AM? > > 73 Jim Allen W6OGC > > > Sent from my iPad > > On Apr 9, 2017, at 06:16, Michael Walker <va...@portcredit.net> wrote: > > You may want to also look at the SGC Tuners. Far superior to the Icom. > You can just send it an low power AM signal and it will tune. > > I have used them in cars and many temporary installations and they 'just > work'. > > http://www.sgcworld.com/ > > Mike > > On Sat, Apr 8, 2017 at 8:36 PM, Jim Allen <jalleninv...@gmail.com> wrote: > >> > I am looking at remote antenna tuners. I have seen several controllers >> for the ICOM AH-4 tuner. My questions are about operation with a K3s. >> > 1. Is there a limit to the time that 10w of RF can be sent to the >> AH-4 via the K3s Tune button? >> > 2. All circuits specify a momentary switch, but does momentary mean >> 0.1sec, 1.0sec or 5seconds? Does the time matter? >> > 3. When the complete signal returns from the AH-4 should the Tune RF >> or the momentary be terminated immediately? >> > 4. Is there a combination of momentary or Tune RF that will damage >> the AH-4? >> > I have an AH-4 which worked with a home built controller for some >> months, and then became operationally intermittent and final fails to work >> at all. That makes me gun-shy, about buying another even though the AH-4 >> gets excellent reviews on eHam, almost all of which are based on an ICOM >> rig control. >> I have used an AH-4 for many years, with a 706MKIIG and with various >> other manufacturer's radios, including now a K2. Other than the limitation >> to ~125 watts, these are excellent. I only run 5 watts so it is not an >> issue. I do not recall a situation where the AH-4 would not give a useable >> match, provided I provided it a plausible antenna. I use a separate >> SWR/watt meter that shows it working. >> >> The momentary switch is push on, release off, no time specified. >> Pushing the button signals the AH-4 to run through its paces for a match. >> Most often, it is very quick. Occasionally, when you have gone from, say, >> 15M to 80M, it might take a little longer, but never more than several >> seconds. If no match can be found, it just stops. Either way, you stop >> the power. I wouldn't let it just run like that, but have never heard of >> damage because of it. You need to reduce power with non-Icom rigs that >> don't do it automatically. >> >> You might join the Icom tuner Yahoo group, if you can stand Yahoo. Lots >> of user experience there. >> >> I've never seen a store bought controller for the AH-4. Where have you >> seen them? >> 73 Jim Allen W6OGC >> >> Sent from my iPad >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to va...@portcredit.net >> > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
