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AH-4 Icom Automatic ATU
* Frequency 3.5 to 54MHz (long wire)
* Max input power: 120W PEP
* Input impedance 50 Ohms
* Input power for tuning 10W (5 - 15W)
* Auto tuning time 2-3 secs
* Auto tuning accuracy: VSWR 2.0:1 or less
* Supply: 13.8V DC * Size 172 x 71 x 230mm
* Weight 1.2kg
The AH-4 is designed for use with all Icom HF transceivers. It stores up to 45 memory channels with minimum SWR settings to provide quick re-tuning. Weather resistant construction, easily fitted in a variety of locations. No adjustments are necessary, just connect the control and antenna cables. Tunes a wide frequency coverage from 3.5 to 50MHz with a 7m or longer wire antenna, or the optional shorter AH-2b whip antenna element.
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