Hi
I recommend DK7ZB yagi antennas. I built this one: 5-Element-50-Ohm-Yagi for 70 cm.
https://www.qsl.net/dk7zb/start1.htm
I used 6mm aluminium rod.
Node is mount on my roof 11 meters above ground and it’s powering by 6m cabl from USB charger. I added a Li-pol 4000mAh battery.
It works perfect.
And some tests (signal always above 65%):

