Anina 3DB Gain GMRS Antenna NMO Mount, Dual-Band UHF VHF 136-174MHz 400-470MHz, 3.5” Antenna NMO Connection for Midland Car Truck Ham Radio Amateur Mobile Radio Two Way Radio Marine Boat VHF Radio

I purchased this antenna specifically for my APRS handheld. It's on a mirror mount on my truck. It was only $18 and it seems to work fine. It's the short one. The tall one is a CB antenna that came with the truck. https://www.amazon.com/dp/B0BKG8QHHX