The Icom AT-141 Automatic Antenna Tuner, Weather resistant The AT-141 is housed in a durable, completely weather-resistant ASA case, with a rubber gasket. The antenna tuner can be conveniently installed near the antenna element. Matches all bands The AT-141 matches all frequencies on the HF marine band. For example, the tuner matches a 7 m long-wire antenna across 1.6–30 MHz. Full automatic tuning Just pushes the [TUNE] key on the transceiver, and the AT-141 immediately tunes for a minimum SWR on any frequency in the HF marine band. HF operation on any size ship The AT-141 allows HF operation where antenna element length is restricted due to space. Simple installation Installation is simple. Just connect the control and antenna cables. You never need to open the cover. 45 memories for shorter tuning time To decrease the tune-up time, the AT-141 automatically stores the matching conditions for up to 45 frequencies. Returning a memorized frequency takes approximately 1 second. Supercapacitor for memory backup Even if the AT-141 is not used for approximately 1 week, the built-in super capacitor backs up the contents of the 45 memories. Low power tune-up The AT-141 emits low output power during tuning. This feature reduces the possibility of causing interference to other stations. Tuner Through function The Tuner Through function is built into the AT-141. This function helps improve receiver gain, depending on the antenna element length used, and the operating frequency.

Specifications •Frequency coverage: 1.6–30 MHz (with 7 m or longer antenna element) •Power supply requirement: 13.6 V DC (supplied from the HF transceiver) •Current drain: Maximum 2 A •Operating temperature range: –30°C to +60°C •Weight (approximately): 2.5 kg •Antenna connector: SO-239 (50 Ω) •Maximum Input power: 150 W (PEP) 100 W (continuous) •Automatic tuning time: Approximately 2 to 3 seconds (general condition) Maximum 15 seconds Approximately 1 second (returning for a memorized frequency) •Automatic tuning accuracy: SWR 2.0:1 (after tuning, except for multiples of 1⁄2 λ) •Usable pole diameter: 32 to 60 mm All stated specifications are subject to change without notice or obligation.