AH-705
The AH-705 is an automatic antenna tuner designed to work in conjunction with the IC-705, a popular Icom brand portable amateur radio station. Here are some key features and details about the AH-705:
Size and Portability: The AH-705 is designed to be compact and portable, making it ideal for amateur radio operations in the field. Its size fits that of the IC-705, making it easy to carry both devices together in a backpack.
Low Power Consumption: The AH-705 has low power consumption. At rest, it draws approximately 1 mA, which is beneficial when used with AA alkaline batteries or an external 12V power source.
Antenna Compatibility: This tuner is versatile and can accommodate a variety of coax-fed antennas, such as end-fed cables with baluns or resonance edge dipoles. You can tune antennas over a wide range of frequencies, from 1.8 MHz to 54 MHz.
Memory: Once the optimal settings are found, the AH-705 stores the tuning steps in its internal memory, speeding up the adjustment process when using the same antennas in the future.
Includes Cables and Support: The delivery of the AH-705 includes a control cable and a coaxial cable, both with lengths of approximately 2 meters. A bracket is also provided that can be screwed onto the tuner for quick mounting.
PL Connector (PL-259): The European version of the AH-705 comes with a PL connector (PL-259), which is commonly used in amateur radio antenna connections in Europe.
Transmit Power: The tuner is capable of handling a maximum transmit power of 10 W and requires approximately 5 W for the tuning process.
Antenna Requirements: For best results, it is recommended to use antennas of certain lengths depending on the frequency band. For example, for the 160 meter band an antenna of at least 30 meters in length is needed, while for bands from 80 meters and upwards an antenna of at least 8 meters in length is suggested.
The AH-705 is an automatic antenna tuner designed specifically to work with the IC-705 and is a convenient option for radio amateurs who want to operate portable with a variety of coaxial fed antennas.
LC-192 Backpack Compatibility: The AH-705 integrates seamlessly into the LC-192 backpack, which is designed for the IC-705 and provides a dedicated compartment on top for the transceiver and tuner. This makes it easy to carry all the necessary amateur radio equipment in an organized and compact manner.
Power Options: The AH-705 can be powered in two different ways: via built-in alkaline batteries (2 units of 'AA' or 'LR6' size) or via an external 12V power supply. This versatility in the power supply makes it suitable for various operating situations in the field.
Current Consumption: In terms of energy efficiency, the AH-705 has a very low current consumption. When idle, it draws approximately 1 mA, which helps conserve power from batteries or power supplies during pauses between transmissions. During the tuning process, the consumption increases to approximately 300 mA, which is still quite efficient.
Kit content
- 1 AH-705 Coupler
- 1 PL male
1 Control cable
1 Support
1 Cable with BNC male
