I'm going to have a rant about people who seem to think the "mobile" suffix means "in a car". I often now specify exactly how I am mobile but you should not assume car mobile without qualification.According to the UK licence,
"Mobile" means the Radio Equipment is located in the United Kingdom: i. in or on any vehicle or conveyance; ii. on the person of the Licensee where the Licensee is a pedestrian iii. on any Vessel on Inland Waters;"
There are at least six modes of transport fitting this definition which I use the radio from and none of them are a car.
So, don't call your product a mobile antenna when you really mean it's an antenna for motorcars.