No manual tuning is needed. Just push the [TUNE] switch on an Icom HF marine transceiver; the AT-130 adjusts the antenna and the transceiver to the minimum SWR in any frequency on an HF marine band. The AT-130 allows you to transmit with strong RF output power, and is perfect for maritime mobile operations.

ICOM AT130 Specifications

• Usable Temperature Range: -30°C ~ +60°C
• Rated Voltage: 13.6 V DC +/-15% (negative ground) (supplied from an Icom HF marine transceiver)
• Current Drain (at 13.6 V DC): 2 A
• Frequency Coverage: 1.6~30 MHz (with the antenna length 7 m (23 ft) or longer)
• Input Impedance: 50 ohms (unbalanced)
• Max. Input Power: 150 W (PEP)
• Input Power During Tuning: 10 W
• Auto Tuning Time: 1.5 sec. (returning for a memorized frequency), typically 2~3 sec. (when operating band has been changed)
• Auto Tuning Accuracy: VSWR 2.0:1
• Insertion Loss: 0.5 dB (with a 50 ohms load, after tuning)
• Dimensions: 230(W) x 340(H) x 80(D) mm; 9.1(W) x 13.4(H) x 3.1(D) in (projections not included)
• Weight: 2.7 kg; 6.0 lb