Here4 conflicting with U-blox RTK

Hello, I have a here4 hooked up to Can2 and SparkFun GPS-RTK-SMA Breakout-ZED-F9P hooked up to gps2 on my cube purple. When I have both GPS propperly configured (gps1_type=9,gps2_type=2) the here4 works but the rtk does not. If I set gps1_type=1 then i loose connection to the here4 and its compass but gain access to my sparkfun RTK data every time.

something that makes this more confusing is that once in a blue moon it just decides to work. I have just reset my cube purple 10 times and on 1 of those 10 times both gps units were active

Has anyone experienced an issue like this before? any ideas to try?

BBotTwo_1_29-2.param (15.1 KB)

I think your issue likely stems from configuring two serial ports for GPS. You should set the unused one of SERIAL3 or SERIAL4 to protocol -1.

That was the issue.

Thank you!