AH-705
HF/50 MHz AUTOMATIC ANTENNA TUNER

Compact Antenna Tuner for the IC-705,
Tunable 50 Ω Antenna and Long Wire AntennaC overs the 1.8 MHz to 50 MHz bands
30 m, 98.4 ft or longer antenna: 1.8 – 54 MHz,
7 m, 23 ft or longer antenna: 3.5 – 54 MHz* Depending on operating conditions or environment, the tuner may
not be able to tune the antenna.

IP54 dust-protection and water

resistance construction** The connectors should be covered with adhesive tape or a jackcover to prevent water seeping into the connection.

SO-239 antenna connector for
50 Ω antenna such as dipole or Yagi

Full automatic tuning, just push the“Terminal connector”, binding post adapter

 atching relays used for saving
Lpower consumption

supplied for a long wire antenna*[TUNER] button on the IC-705* PL-259 plug is supplied for Europe version.

2-way power sources using alkaline

batteries or external 13.8 V DC*

190 × 105 × 40 mm; 7.5 × 4.1 × 1.6 in,

450 g; 15.8 oz* compact design* Battery cells are not included.

* 13.8 V DC should be taken directly from an external power supply,
not through the IC-705.

AH-705

Wire antenna installation example

50 Ω antenna example

AH-705

HF/50 MHz AUTOMATIC ANTENNA TUNERSUPPLIED ACCESSORIESSPECIFICATIONS
Tunable frequency range

1.8 – 54 MHz (with a 30 m, 98.4 ft or longer antenna)
3.5 – 54 MHz (with a 7 m, 23 ft or longer antenna)

Maximum input power

10 W

Input impedance

50 ΩPower requirement
for tuning
Tuning time
(approximate)

5 W, 10 W
Average: 2 – 3 seconds
Maximum: 15 seconds

Power supply
requirement

Battery: 3.0 V DC (LR6 (AA) alkaline × 2 cells)
DC Input: 13.8 V DC (±15%)

Current drain

Less than 300 mA (at tuning)
Less than 1 mA (stand-by)

Electric polarity

Negative ground

Operating temperature
range–10°C to +60°C, 14°F to +140°F• Coaxial cable (2 m, 6.6 ft, BNC connectors, between AH-705 and IC-705)• Control cable (2 m, 6.6 ft, between AH-705 and IC-705)• Terminal connector, PL-259 to binding post adapter for a long wire antenna*• Mounting bracket (with a screw and washer) • DC plug
* PL-259 plug is supplied for Europe version, instead of Terminal connector.

Less than 1: 2.0 VSWR

Tuning accuracy(except λ/2 of antenna length and its multiples)

Number of tuned
45 memoriesmemories
Dimensions (W × H × D)
190 × 105 × 40 mm; 7.5 × 4.1 × 1.6 in(projections not included)
Weight (approximate)

OPTIONAL ACCESSORIES
OPC-2474
CONTROL CABLE (5 m, 16.4 ft)
between AH-705 and IC-705

450 g, 15.8 oz (battery cells are not included)

OPC-2475
COAXIAL CABLE (5 m, 16.4 ft)
between AH-705 and IC-705(BNC connectors)

All stated specifications are subject to change without notice or obligation.

Applicable IP Rating
Ingress Protection StandardIP rating

IP54 (Dust-protection and water resistant)

PANEL VIEW

The AH-705 fits into the LC-192 multi-function backpack

TOP(antenna side)

SO-239 connector(To 50 Ω antenna
or long wire antenna)

Ground terminal

BOTTOM(radio side)

BNC connector(To IC-705)

Control
DC power(To IC-705) (13.8 V DC)

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Printed in Japan