OpenGD77

Also keep in mind that the GD-77 in VHF although it seems to have an excellent sensitivity actually has a bad filtering, and therefore as soon as you connect it to an external antenna the radio becomes deaf. I have carried out comparative tests between ID-51, D878 and GD-77 and you can see how the GD-77 is unusable under an external antenna (at least in a large metropolitan city where I live)
GD-77 Test https://youtu.be/aAHpk1NJgvI
Anytone D878 Test https://youtu.be/7Mbhm67cJCg
Icom ID-51 Test https://youtu.be/IOG0PXn1zDE

Same thing for me on 2M. There seems to be a lot of local QRM, hence the hotspot works better on 70cm, even though in theory the range should be less.

about 25km
Gd77 + Diamond x30
4w TX
VHF band

Received with other opengd77 + 5/8 mobile antenna and 5w.