V0.20
1、Added a single PTT mode, which can be toggled on/off via the menu.
2、Added a temporary scan list feature, which can be custom-mapped to long-pressing keys 0–9.
3、Add channel scanning with add and delete set functions

V0.21
1. Fix the crash bug in the scanning and addition function under the zone mode

V0.22
1、Updated the spectrum interface and fixed related bugs.
2、Optimized spectrum functionality: added 5 kHz stepping and backlight-off option.
3、Enabled independent configuration of PF1 and PTTC functions.
4、Added menus for DTMF code-delay, code-duration, and inter-code spacing.
5、Added the ability to customize zone names.
6、Improved stability to prevent APRS crashes.


V0.23
1、Fixed the issue where RSSI was invalid while in monitoring mode.
2、Optimized the 950 spectrum interface according to customer requirements.
3、Fixed the automatic switch to the APRS channel when transmitting an APRS beacon.

V0.24
1、Fix the issue where channel names are not displayed in small font
2、Add zone name display on the main interface
3、Change the number of areas to 10 and the number of channels per area to 99
4、Fix the CTCSS decoding bug
5、Spectrum interface - Change center frequency to small font and current frequency to large font
6、Add left/right key adjustment for center frequency in spectrum mode
7、Add left/right keys in radio mode for adjustment by minimum step frequency
8、Fix the issue where APRS is not sent correctly on first boot (not sent via the configured APRS-CH)
9、Add standby indicator light, green light blinks every 5 seconds after screen off
10、Fix the issue where work band does not automatically switch based on frequency in spectrum mode
11、Optimize RSSI table display in spectrum mode
12、In radio mode, increase AM step frequency by 9K
