1. Turn the transceiver OFF.
2. Press and hold in the [F] and [MODE] buttons while turning the transceiver ON.The green LED Indicator will blink with intervals of 0.5 sec(0.5 sec ON, 0.5 sec OFF).
3. Press the [MODE] button, and then the Green LED Indicator will blink with intervals of 1 sec (1 sec ON, 1 sec OFF).
4.Press and hold in the [MODE] button, and the radio will re-start automatically. Activation of the 5 MHz (60 m) band is successfully completed.
* The FT-991A/FT-991 is an HF and VHF/UHF transceiver. In the VHF/UHF bands, the transceiver is configured at the factory with the ARS (Automatic Repeater Shift) Frequency Range and the Repeater shifts as shown below in “ARS Configuration B2”. By activating the 5 MHz (60 m) operation above, the ARS Frequency Range and the Repeater Shifts will be changed to “ARS Configuration C2”.
1。关掉电台电源。
2。在开机前同时按下F和MODE按钮 电台开机。绿色LED指示灯的闪烁间隔为0。5秒
3。按下MODE按钮，然后是绿色LED指示器将会闪烁1秒（这一步不知道怎么操作，按MODE键没反应，也没有转到绿色LED灯闪烁）
4 长按下MODE按钮，电台就会自动重启。激活5 MHz（60 m）频带成功完成。
另外：机器原本带的 5.332 5.348 5.35850 5.373 5.405 （USB/CW）这些频率怎么修改，5M应该用在LSB吧，但是修改不了，存在的位置也是设定好的，不知道怎么删除它们或修改它们。
