Ailunce HA2 App V1.0.05.007-20260520
Add Spectrum analysis function 
It allows users to visually observe the signal distribution across radio frequency bands. Through real-time scanning, users can quickly identify available frequency bands, detect interference sources, and even monitor signal activity at specific frequencies. 
Numbers 1 and 4 adjust the lower limit of the spectrum, while numbers 2 and 5 adjust the upper limit.
Number 3 adjusts the receive bandwidth.
Number 7 adjusts the spectrum resolution.
Number 9 adjusts the step value.
* and # adjust the squelch threshold.
Use the up and down keys to adjust the frequency. 

