File: G90_MainUnit_FW_V1.78b01
SHA-256: CDAB25C6EEAA9FFF9C9D5C39A2A965F163888DD7913C40FCE75CC913545E4C9A

1. Fine tuning of AGC algorithm to improve audio quality
2. Fix some issues of ALC algorithm
   2.1 Tx power more accurate
   2.2 Fix the issue that ATU inaccurate or fail to tune due to the instability of ALC algorithm
3. AM tx power equ to set power
4. Display ALC level range 0-100,tips:
   4.1 ALC level equ to 0: over driving, decrease input signal level
   4.2 ALC level equ to 100: under driving, increase input signal level
   4.3 When doing Digi,the audio baseband signals are almost constant amplitude,
       adjust the soundcard volume to make ALC level between 20-80 to get good linearity
5. Fix a built-in keyer bug(has chances losing dot/dash when performing squeeze operation)

File: G90_DispUnit_FW_V1.78b01
SHA-256: 79B20BD5F6E4705C4EEDB735A16777C1FF5F4D25B1BED088A8FBBAC052D1DC8E

1. Add CI-V command for ATU operation

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Chinese:
File: G90_MainUnit_FW_V1.78b01
SHA-256: CDAB25C6EEAA9FFF9C9D5C39A2A965F163888DD7913C40FCE75CC913545E4C9A

1. 调整了AGC算法,改善听感
2. 调整了ALC算法
   2.1 功率控制更准确,波动更小
   2.2 解决了ATU调谐时功率波/驻波大幅度变化时导致的调谐失败或调谐精度降低的问题
3. AM发射载波功率改为与设定功率一致
4. ALC电平指示改为0-100,下面是几点ALC相关的小贴士
   4.1 驱动电平越大ALC值越小,等于0时表示过驱动,应当减小驱动信号的电平
   4.2 驱动电平越小ALC值越大,等于100时表示欠驱动,应当增加驱动信号的电平
   4.3 做数据通信时因为数字信号的电平基本不会变,调整声卡输出的音量使ALC电平值在20-80之间即可避免欠驱动/过驱动
5. 修正了CW自动键的bug(此bug表现为双桨键捏键时有概率不响应,出现不需要的停顿现象)



File: G90_DispUnit_FW_V1.78b01
SHA-256: 79B20BD5F6E4705C4EEDB735A16777C1FF5F4D25B1BED088A8FBBAC052D1DC8E

1. 添加了ATU相关的CI-V指令,包括:
   打开/关闭ATU
   启动ATU