if you have a LCD, you can do a simple test

Code:
        HSERIN [ByteA, ByteB, ByteC, ByteD]
        LCDOUT $FE,1, HEX2 ByteA, HEX2 ByteB, HEX2 ByteC, HEX2 ByteD
What's happen using that?

Any model or link to your radio?