Automatic Tuning Antenna
The Icom AH-740 is an HF automatic tuning antenna designed primarily for use with Icom HF transceivers. It features a compact and lightweight design with fast tuning speeds, covering a frequency range of 2.5 to 30 MHz when using the supplied whip, and 2.2 to 30 MHz with the optional NVIS kit. The antenna requires a 13.8 V DC power supply and has a maximum input power of 125 W (PEP).
| Frequency coverage (with whip) | 2.5-30 MHz |
|---|---|
| Frequency coverage (with NVIS kit) | 2.2-30 MHz |
| Power supply requirement | 13.8 V DC |
| Current drain | Maximum 0.6 A |
| Operating temperature range | -40°C to +70°C |
| Maximum Input power | 125 W (PEP) |
| Automatic tuning time (new frequency) | Approximately 2 to 3 seconds |
| Automatic tuning accuracy | SWR 1.5:1 |
| Dimensions | 238(H) x 145(W) x 160(D) mm |
| Weight | approximately 3.5 kg |
The frequency coverage is 2.5-30 MHz when using the supplied whip.
With the optional NVIS kit, the antenna covers the 2.2 to 30 MHz range.
The maximum input power is 125 W (PEP).
The automatic tuning time is approximately 2 to 3 seconds for a new frequency.