An omni-directional "Poynting 4G-XPOL-A0001": https://www.amazon.co.uk/dp/B00C1DGFPS https://www.amazon.co.uk/dp/B00C1DGFPS They make lots of different types:

An omni-directional "Poynting 4G-XPOL-A0001": https://www.amazon.co.uk/dp/B00C1DGFPS https://www.amazon.co.uk/dp/B00C1DGFPS They make lots of different types: https://poynting.tech/antenna-category/antennas/ https://poynting.tech/antenna-category/antennas/