How are the antennae connected to the motherboard?

Hi, realize this router is a bit older but hopefully someone can help. Just purchased a used one online and one antenna is broken. Figured while I’m at it I’ll order 3 or 4 higher dbi antennae (8 or 9 dbi) replace the broken one and 2 or 3 other ones. The motherboard repair guide has been helpful but I can’t tell from the pictures if the antennae are connected to the board with IPEX connectors (if so what size?) or are those just solder points that are hot glued down (which seems very odd to me…)

Thanks in advance!

Jeff