mAT-TUNER mAT-4117 Bias-Tee Voltage Injector 1.8-54 MHz

The mAT-TUNER mAT-4117 is an essential accessory for amateur radio installations requiring remote power via the coaxial cable. This high-quality Bias-Tee allows injecting a direct current (DC) voltage into the coaxial line to power remote equipment such as automatic antenna tuners, preamplifiers, or antenna switches, while allowing the RF signal to pass with minimal loss.

Thanks to its robust design using a two-stage filter, it offers exceptional RF isolation greater than 65 dB, ensuring that no RF feedback disturbs your power supply or your station. It is compatible not only with mAT-TUNER tuners (like the mAT-40) but also with any equipment from other brands (Icom, Yaesu, Kenwood, LDG) designed to be powered via coaxial cable.

Technical Specifications

Installation and Precautions

Installation is simple: connect your transmitter to the 'RF' port and the coaxial cable going to the antenna (or remote tuner) to the 'RF+DC' port. Then connect your power source to the DC jack.

Warning: The 'RF+DC' port carries current. Never connect this port to a DC short-circuited antenna (like some Yagi antennas or dipoles with short-circuited baluns) or to an unprotected measuring device (SWR meter), as this may damage the injection circuit.

FAQ