Description
ICOM AT-140 Antenna Tuner
For 1.6–30 MHz (with 7 m; 23.0 feet) or longer antenna element)
FEATURES
Weather Resistant
The AT-140 is housed in a durable, completely weather resistant ASA case, with a rubber gasket. The antenna tuner can be conveniently near the antenna element.
Matches All Bands
The AT-140 matches all frequencies on the HF marine band. For example, the tuner matches a 7 m (23 feet) long-wire antenna across 1.6 – 30 MHz.
Full Automatic Tuning
Just push the [TUNE] key on the transceiver, and the AT-140 immediately tunes for a minimum SWR on any frequency in the HF marine band.
HF Operation On Any Size Ship
The AT-140 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-140 automatically stores the matching conditions for up to 45 frequencies. Returning a memorized frequency takes approximately 1 second.
Super Capacitor for Memory Backup
Even if the AT-140 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-140 emits low output power during tuning. This features reduces the possibility of causing interference to other stations.
Tuner Through Function
The Tuner Through function is built into the AT-140. This function helps improve receiver gain, depending on the antenna element length used, and the operating frequency.
SPECIFICATIONS
GENERAL
Frequency Coverage | 1.6 – 30MHz (with a wire antenna longer than 7 meters, and the ground terminal connected to the vessel’s ground point, or a counterpoise wire longer than 7 meters.). |
Power Supply Requirement | 13.6V DC ±15% (supplied from HF transceiver) |
Current Drain | 1.0A or less |
Operating Temperature Range | -30°C to +60°C (-22°F to +140°F) |
Weight (approximately) | 2.5kg; 5.5lb |
Antenna Connector | SO-239 (50Ω) |
Maximum Input Power | 150W (PEP) 100W (continuous) |
Automatic Tuning Time | Approximately 2 to 3 second (general condition) Maximum 15 seconds Approximately 1 second (re-tuning for a memorized frequency) |
Automatic Tuning Accuracy | SWR 2.0 : 1 or less (after tuning, except for multiples of ½ λ) |
Usable Pole Diameter | 32 to 60mm; 1.3 to 2.4 inches |
COMPATIBLE
HF Radios | -IC-F8101 -IC-78 |
SSB Radios | -IC-M802 -IC-M803 -IC-M701 –IC-M700PRO |
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