八重洲FTM500DR 经常自己跳频率，A频段和B频段都有这个情况，频率模式下比如当前在438.500MHz下，会自己随机跳频率。信道模式下比如当前在信道1，会随机跳到信道5，信道6，信道3。随机性很强，出现概率不一定，有遇到过此问题的ham吗？（附件好像不支持挂视频？）

补充下有时候还会自己修改步进频率，设置里步进频率为5KHz，有时候跳频之后步进会自动变成12.5KHz

@"BG9EQM"#p88093 不知道，有时候还会跳音量，好好的音量忽然跳到满格，开车开的好好的电台嗷嗷叫吓一跳

@"BG5BVC"#p88121 我找了商家，商家说也是连接线问题，说我连接线太长了，前两天从5米换成了4米，这几天目前没问题，还有待测试，这玩意儿有点搞心态

Help: Yaesu 500D frequently changes frequencies on its own.

BA4RAC

The Yaesu FTM500DR frequently changes frequencies on its own, exhibiting this behavior in both the A and B bands. For example, when operating at 438.500MHz, it will randomly switch to other frequencies. Similarly, in channel mode, it might jump from channel 1 to channels 5, 6, or 3. This random behavior is quite pronounced. Have any of you experienced hams encountered this issue?

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BG5BVC

BA4RAC 我的是在信道模式和频率模式间反复跳跃。后面还寄回去返修，结果什么问题也没查出来，说可能是机头的连接线接触不好，换了一根，问题解决了。

BA4RAC

Additionally, sometimes it automatically adjusts the step frequency. When the step frequency is set to 5 kHz in the settings, it may automatically change to 12.5 kHz after frequency hopping.

BG9EQM

The encoder isn't working properly?

BA4RAC

BG9EQM I don't know, sometimes it also fluctuates in volume; a perfectly good volume suddenly jumps to maximum, making the radio sound very loud and startling.

BA4RAC

BG5BVC I contacted the vendor, and they said it was a problem with the cable. They claimed that the cable was too long, so I replaced it with a 4-meter cable two days ago, and it hasn't caused any issues since then. However, further testing is still needed. This device seems to be causing some confusion.

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