The antenna seems good enough, but the TS9 connector doesn't match the Pantech UML290 external antenna connectors. The outer ring of the port is about 0.114 inches and the ID of the TS9 connector is only about 0.100. "I suppose that would be fine for a device with an external antenna connector, but I chose it for its claimed compatibility with the Pantech UML290 modem and its connector just doesn't match this device.
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