The Quansheng UVK58 is a radio hackers dream, because it's based on the Beken 4819 rf chip which covers between 18 MHz - 1200 MHz. We have already see how well the receiver performs thanks to other youtubers, now lets see what happens if you try transmitting with it!
Firmware tested:
https://github.com/spm81/Quansheng_UV-K5/blob/main/Firmware/UNIVERSAL%20FIRMWARE%20(%20All%20Radios%20-%20UV-K5%2C%20UV-K5(8)%2C%20UV-K6%2C%20UV-5R%20Plus%2C%20etc...)/Open%20Spectrum%20Firmware%20by%20facgi/uv-k5-firmware-fagci-mod-v1.1.2-SSB-lite-test.bin
This video shows tests conducted in a controlled environment, I am a licensed amateur radio operator. I am not responsible for the irresponsible use of this firmware.