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<p>I programmed my UV-5RA using a Macintosh (running Mavericks, OS X (10.9.5), an FDTI cable from Amazon, and Chirp 0.4.1 but I cannot transmit. I can reach the local repeater, but if I transmit for more than a fraction of a second the radio's screen goes black, and I have to turn it off and on again to do anything. The battery is fully charged, and I have tried with three different antennas -- same result. Help !<br /></p>
<p> thanks   <br /></p>
<p>    John KG6VK<br /></p>
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