Q: Does the Yaesu rubber duck antenna for the VXA 220 / 230 (part # 11-04343) have a screw in connection or a bayonet connection?
This rubber duck antenna part # 11-04343 has a screw in connection.
Q: I have a Vertex VXA-150. Will this work for my radio?
No, this will not work for the VXA 150.
Q: Will this work for my vxa-300?
Yes