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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If all antenna and ground requirements are met, the tuner will find a match pretty fast. Usually closer to 2.

The versatile AT can be used with a variety of vessels, even smaller boats that cannot use a long antenna element. Normally 8 Volts, when less than 1 volt is recieved a tune cycle will commence”. It is a capable tuner if you observe the following measures: What it really means is “ground this input if you want it to start tuning”. Automatic tuning No manual tuning is needed. In addition, the AT has 8 convenient memories to store tuning information.

ICOM AT – Watt HF Auto Wire Antenna Tuner – AT

I’m having a devil of a time getting this tuner to talk with at1330 Barrett marine HF radio. I recently got my brand new AT working. Weather resistant The AT is housed in a durable, completely weather-resistant acrylic case with rubber gaskets.


This line needs to be connected to your radio in a way that causes it to go into the transmit mode, and produce about 10 – at30 watts of rf – NOT full TX power! Improved tuning performance…the tune-up time is less than 3 seconds in any frequency on an HF marine band. Reviews Summary for Icom AT I’ve ended up with a little black box that attaches to the top of the radio and has a ‘tune’ button.

By design, it wants to end feed a random wire. For a new frequency, it takes between 2 and 10 seconds. Low power tune-up The AT emits very little output power just at103 during the tuning process.

Just lately it stopped doing that. It works great that way. If you want the technical details, send me a email. Unacceptable in a marine HF system. I repair marine electronic equipment for a living, so I have the advantage of being very familiar with this unit.

Icom AT130

This reduces the possibility of causing interference to other stations using the frequency. For example, the AT will match a 7 m 23 feet long wire antenna across the marine band in the 1. Email Subscription You are not subscribed to this review. Should be a interesting experiment.

If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager. My main gripe is the manual. I purchased the unit while I was on holiday so I’d be forced to read through the manual for a few days wt130 trying to hook it up.


Icom AT Antenna Tuner

AT installation is simple. It appears it needs to also “be told” with a switch. Use a antenna of at least 35 feet. The AT emits very little ar130 power just mW during the tuning process. I have successfully interfaced it to my Kenwood TSS, making only minor, easily reversible modifications. Give it a better than average ground.

The pain that I experienced was the “start” input. The manual says words ag130 the effect of “Voltage input to trigger the start of the tuning cycle. New to Ham Radio? Still, a bit of a let down.

This allows it to be conveniently installed near the antenna element base. After some dramas rigging up an antenna mainly a height issuethe unit appears to work well. 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 point between atu and transceiver.