Hi guys. I am looking for someone who is knowledgeable about the HRO-500s. I have one that I acquired from a radio station, and I would like to repair it and make it run smoothly. I would also like to find a manual. Any takers? 73, Adam McLaughlin KD6POC QRG: 7037 KHz kd6poc at jps.net http://www.jps.net/jmclaugh MTC-ARRL-FISTS #3366