The Icom AH740 Compact Automatic Tuning HF Antenna (2.5-30MHz) is a professional-grade antenna built for demanding two-way radio environments. Highlights include wideband HF Tuning Range and rapid Relay-Driven Automatic Tuning.
Key Features
- Wideband HF Tuning Range: Covers 2.5–30 MHz with the included whip element and extends down to 2.2–30 MHz when paired with an NVIS kit.
- Rapid Relay-Driven Automatic Tuning: Fast relay switching matches 50 Ω input impedance in seconds for instant frequency changes.
- Rugged Heavy-Duty Spring Mount: Flexible spring connector protects the whip element and tuner base from branch impacts and road vibration.
- Standard SO-239 Antenna Interface: Integrates easily with standard coaxial feedlines and Icom HF transceiver control cables.
- Factory OEM Quality: Genuine Icom engineering ensures full compatibility and automatic control via supported Icom HF transceivers.
- Icom IC-F8101 HF Land Mobile Radio – Commercial/government 125W HF transceiver featuring automatic link establishment (ALE).
Specifications
| Model/SKU | AH740 |
| Product Type | Automatic Tuning HF Antenna |
| Frequency Coverage (Standard) | 2.5–30 MHz (with supplied whip) |
| Frequency Coverage (NVIS Kit) | 2.2–30 MHz (with optional NVIS kit) |
| Input Impedance | 50 Ω |
| Antenna Connector | SO-239 |
| Weight | Approx. 3.5 kg (7.7 lbs) |
| Base Dimensions | 238 mm (H) x 145 mm (W) x 160 mm (D) |
| Whip Length | 1540 mm |
| Spring Length | 131 mm |
| 7100 | 718 | 7300 | 7300MK2 |
| 7610 | F8101 | | |
Compatibility: engineered to work with 7100, 7300, 7300MK2, 7610, AH-740, AH740 and other compatible radio models.
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