Today I picked up an XSR to replace an X4R that had one of it's antennas ripped off taking the connector with it. After a couple of times having that happen I'm looking at those connectors as way more trouble than they're worth. Anyway the XSR is binding fine but not talking to the FC or the two other FCs I tried. Don't think testing if it'll talk through ppm will tell me anything so I haven't tried that. I plan on taking it back tomorrow but before I make myself look like a moron in person thought I'd check with the inter-web for that first.