external antenna question

Does anyone know anything about or have used Mako Panorama antenna used with Peplink 5g?

Haven’t used that specific model but working with 3rd party external antennas always worked for us (3 different instances I can think of)
if you not having specific issues with this I suggest you give it a try and see.

Just make sure to check the Frequencies it supports and make sure it ends in SMA connectors for Cellular/GPS and RPSMA connectors for WIFI and you should be fine.