Deskripsi
ICOM AH-4 HF + 50MHz Automatic Antenna Tuner
FEATURES
Wide Tuning Range
The AH-4 provides reliable matching from 3.5 MHz to 54 MHz when using at least a 7 m (23 ft) antenna; or 7 MHz to 54 MHz when using the AH-2b antenna element.
Automatic Digital Control Tuning
The built-in 8-bit microprocessor chooses the lowest SWR using more than 1,040,000 different LC (coil/capacitor) combinations.
45 Freqeuency Memories for Fast Tuning
The LC combinations of 45 previously-used frequencies are automatically memorized. Once a frequency is memorized, the AH-4 tunes on that frequency in less than 1 second. Note that the AH-4 does not memorize a frequency which is normally tuned within 2.5 seconds. Memories are retained only when the power is on.
Weather Proof Design
The AH-4’s tightly sealed plastic case allows convenient mounting virtually anywhere. The AH-4 can be mounted outdoors under your antenna.
0.3W Radiated Power
Radiated power during tuning is less than 0.3 W, minimizing interference to other stations.
SPECIFICATIONS
GENERAL
| Frequency Range | 3.5–54 MHz (with an antenna longer than 7 m; 23 ft) 7–54 MHz (with the AH-2b) |
| Maximum Input Power | 120W |
| Input Impedance | 50 Ω |
| Tuning Power Required | 5 to 15 watts |
| Rated Voltage | 13.8V DC ±15% (current less than 1 A) |
| Usable Temperature Range | –10°C to +60°C (+14°F to +140°F) |
| VSWR | 2.0 : 1 or less (except antennas a one half wave or multiple of a one half wave in length) |
| Weight (approximately) | 1.2 kg (2.65 lb) |
| Dimensions (projections not included) | 172 (W) × 69.5 (H) × 230 (D) mm |
| Supplied Accessories | -U-bolts ………………………………………………………2 -U-bolt brackets ……………………………………………2 -Flat washers (M6 large)……………………………………8 -Flat washers (M6 small)……………………………………4 -Spring washers (M6) ………………………………………8 -Nuts (M6) ……………………………………………………8 -Hex head bolts (M6 × 50) …………………………………4 -Self-tapping screws (A0 6 × 30) …………………………4 -PL-259 connectors …………………………………………2 -Weatherproof cap …………………………………………1 -Rubber vulcanizing tape …………………………………1 -Control cable* (5 m; 16.4 ft) …………………………………1 -Coaxial cable* (5D-2V: 5 m; 16.4 ft)…………………………1*Not shown in the illustration to the left |
All specifications are subject to change without notice or obligation.
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