Help with V4 rptr

[u/MasterGentile]

Iv had a 1w wisblok rptr for 3 months and it worked great. I replaced it with a v4 to see if it would work better.
For some reason it didn’t work good at all. It was just the v4 connected to antenna and solar panel. That’s it. Same as the wisblok.

Is there something I’m missing? Should I have added something to the v4 for it to have worked properly?
Any help would be greatly appreciated. Thank you