山进ATS-909X2收音机搭载的固件版本是073。山进ATS-909X2也有最新固件版本升级更新到078,相比于接收调幅信号,在使用909X2接收单边带信号时,确实需要将音量调大一点儿。有时听下边带信号时,要比听上边带时音量调得更大一点儿,这可能与固件版本有关。
The firmware version of the Sangean ATS-909X2 radio is 073. The Sangean ATS-909X2 has also been updated to the latest firmware version 078. Compared with receiving AM signals, when using the 909X2 to receive SSB signals, it is indeed necessary to turn up the volume a little. Sometimes when listening to the lower sideband signal, the volume needs to be turned up a little more than when listening to the upper sideband. This may be related to the firmware version.