Icom automatic antenna tuner, Manufacturer’s Part Number AT, matches the SSB transceiver to a long wire or whip antenna with little insertion loss. for the AT/ATE/AT HF AUTOMATIC ANTENNA are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom. Find great deals for Icom AT Shop with confidence on eBay!.
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I normally turn my down to watts which is plenty.
No adjustments are necessary. Reviews Summary for Icom AT The versatile AT can be used with a variety of vessels, even smaller boats that cannot use a long antenna element. I’m limited as to the amount of RF i can put through it but watts is OK for me and as i said i have a balanced antenna i just connect the open wire feeder directly to the atu, one leg of the feeder to the hot side and the other to the ground, and a common mode choke at the feed ay130 between atu and transceiver.
I have successfully interfaced it to my Kenwood TSS, making only minor, easily reversible modifications. Use a choke balun to reduce shield radiation.
Just connect the control cable and antenna wire and go! It at103 to be a bit more rugged than my AH-4, which I toasted by trying to tune a 75 meter mobile whip on 40 meters. Quick tune-up Improved tuning performance…the tune-up time is less than 3 seconds in any frequency on an HF marine band. This allows you quick trouble-free frequency changes.
Sadly, it is not compatible with a balun One drawback to using the AT with the is that every time I would change bands or frequency ranges the tuner would automatically tune. The AT is housed in a durable, completely weather-resistant acrylic case with rubber gaskets.
ICOM AT – Techno Marine – Marine Safety & Electronics
No manual tuning is needed. It appears it needs to also “be told” with a switch. I repair marine electronic equipment for a living, so I have the advantage of being very familiar with this unit.
Should be a interesting experiment. In addition, the AT has 8 convenient memories to store tuning information. I recently got my brand new AT working. Automatic tuning No manual tuning is needed. No problem in tuning a long wire. As its a commercial unit and unlikely to be connected to a non-icom HF set, I can see why this has gone undetected.
Low power tune-up The AT emits very little output power just mW during the tuning process.
It seems to gloss at1300 the requirements if it is not connected to an Icom HF set. If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.
My main gripe is the manual. The AT manual is very skimpy.
AT installation is simple. Email Subscription You are not subscribed to this review. It only takes a couple of watts of RF to figure out what to do. It works great that way. I’ve ended up with a little black box that attaches to the top of the radio and has a ‘tune’ button.
It is a capable tuner if you observe the following measures: The manual says words to the effect of “Voltage input to trigger the start of the tuning cycle. What it really means is “ground this input if you want it to start tuning”. I purchased the unit while I was on holiday so I’d be forced to read through the manual for a few days before trying to hook it up. This reduces the possibility of causing interference to other stations using the frequency. Use a antenna of at least 35 feet.
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New to Ham Radio? Normally 8 Volts, when less than 1 volt is recieved a tune cycle will commence”. Now when I press the icpm button that is normally used for the voice synthesizer option – not installed the tuner begins it process.
My system consists of a 75′ random wire, 3 – 6 ‘ copper ground rods, connected to the tuner with copper strap, and 5 ground radials of various lengths more to come. Retuning for a memorized frequency takes about 1. The pain that St130 experienced was the “start” input. Getting the AT to autotune when it sees a new carrier seems impossible.
My Subscriptions Subscriptions Help. Improved tuning performance…the tune-up time is less than 3 seconds in any frequency on an HF marine band. Getting it ah130 play with non – Icom radios is possible, but probably not in a fully automatic sense.
It has accompanied me to at least two different ships to be used with end-fed wire antennas.