Antenna seems good enough but TS9 connector does not fit Pantech UML290 external antenna connectors. The outer ring of the port is about 0.114 inches, and the TS9 port ID is only about 0.100 inches. I assume this would be normal for the device that the external antenna connector fits, but I chose it for its claimed compatibility with the Pantech UML290 modem and its connector just isn't suitable for this device.
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