Item Details:
Icom AH-705 Compact Automatic Antenna Tuner
The Icom AH-705 is an antenna tuner specifically designed for the popular IC-705 portable transceiver. It allows full automatic tuning with just a press of the TUNER button on the radio - no extra controls needed. Ideal for field operations, SOTA, POTA, and QRP activities, it handles both coax-fed 50 Ω antennas (like dipoles or inverted vee) and random long-wire antennas with ease.
Thanks to its wide tuning range and reliable performance, the AH-705 quickly achieves a low SWR on most bands, making it perfect for portable setups where antenna conditions vary. It supports dual power sources for maximum flexibility in the field and features rugged IP54 dust and water resistance, so it can withstand outdoor use.
Features:
- Covers a wide frequency range from 1.8 to 54 MHz when using a 30 m or longer wire antenna
- Supports 3.5 to 54 MHz with a 7 m or longer wire antenna
- Handles a maximum input power of 10 watts
- Provides fully automatic tuning controlled directly by the radio with an average tuning time of 2–3 seconds
- Powered by two AA alkaline batteries or an external 13.8 V DC supply
- Features very low power consumption thanks to latching relays with less than 1 mA in standby mode
- Offers IP54 dust protection and splash resistance for reliable outdoor use
- Stores up to 45 tuning memories for quick band changes
Specifications:
| Tunable frequency range: |
1.8 – 54 MHz (with 30 m / 98.4 ft or longer wire antenna)
3.5 - 54 MHz (with 7 m / 23 ft or longer wire antenna) |
| Maximum input power: |
10 W |
| Input impedance: |
50 Ω |
| Tuning power required: |
5 W - 10 W |
| Tuning time (approx.): |
Average: 2 - 3 seconds
Maximum: 15 seconds |
| Power supply: |
Battery: 3.0 V DC (2 × AA alkaline cells)
External: 13.8 V DC (±15%) |
| Current drain: |
Less than 300 mA (during tuning)
Less than 1 mA (standby) |
| Tuning accuracy: |
VSWR less than 2:1 (except λ/2 of antenna length and multiples) |
| Number of memories: |
45 memories |
| Protection rating: |
IP54 (dust and splash resistance, when jack covers are attached) |
| Dimensions (W × H × D): |
7.5 × 4.1 × 1.6 in (190 × 105 × 40 mm)
(projections not included) |
| Weight: |
Approx. 15.8 oz (450 g) - without batteries |
| Operating temperature range: |
14°F to +140°F (-10°C to +60°C) |
