Chinese UV-K5 (Starter info)

• Device: K6 UVK5(8)AM/FM/DTMF walkie Talkie 200Three Frequency Receiving walkie Talkie NOAA Weather Forecast, with Flash Replication Frequency Tpye-C LCD Display for Hiking Camping Trip Two-way radio ($30.99)
• Antenna: Authentic Genuine Nagoya NA-771 15.6-Inch Whip VHF/UHF (144/430Mhz) Antenna SMA-Female for BTECH and BaoFeng Radios ($20.98)
• Programming Cable: Authentic Genuine Nagoya NA-771 15.6-Inch Whip VHF/UHF (144/430Mhz) Antenna SMA-Female for BTECH and BaoFeng Radios ($9.99)

CHIRP is a free, open-source tool for programming your radio. It supports a large number of manufacturers and models, as well as provides a way to interface with multiple data sources and formats.

Docs:

• CHIRP WIKI

Custom CFW:

• Features
• uv-k5-firmware-custom wiki
• Quansheng UV-K5 - IJV v3 Firmware Manual