Upgrade of RTK reference station antenna

We have upgraded the antenna of RTK reference station for further experiments.

The new antenna is Javad GrANT-G5T, and it can catch radiowaves of L1-band, L2-band, L5-band, and L6-band signals.

Now, we attach the output to the two-way RF splitter (Mini-Circuits ZAPD-2DC-S+). We use two equipments of u-blox ZED-F9P receiver and Allystar HD9310 receiver.