Well there’s your problem. Not all POE is the same. There are two categories, Active POE and Passive POE. Active POE (the standards 802.3af, 802.3at, and 802.3bt) doesn’t output power until a suitable sink (electrical term meaning something that uses power) is detected, and runs at 48 - 56V. Passive POE is always on, and normally runs at 24V. The Loco M2 only has Passive POE, and the USW-16-POE only has Active POE. The G4 Bullet also has Active POE. So the switch can detect the camera and outputs power to it, but it doesn’t detect the antenna - and good thing because if the switch output 48V it would fry the antenna.
You can buy an “Instant AF Adapter” which has Active POE on its input, and Passive 24V POE on its output. The model is INS-3AF-I-G.