I purchased a Digirig-lite today at HAMFest. As soon as I plug my BTECH cable into the Digirig-lite, the red PTT light on the Digirig-lite comes on and does not turn off. When it is just plugged into the Android phone, the green light comes on, then when I plug in the BTECH cable, the PTT light activates. I have tried a couple of different cables and get the same result. There is no change when I plug in the radio, and I cannot trigger the PTT on the radio. What other actions should I take to resolve the problem?