Nope, you can't "talk thru it" and tell. The easiest way to tell if it works on 10 meters is to see if #1 Does the band switch click one more time after 15 meters? #2 open the lid and see if the 10 meter input circuit is present on the input board. Often times the 10 meter input circuit is missing and the band switch does not advance beyond 15 meters. If you don't know what the input board is, post a photo of the inside and someone will look see if the input circuit is missing for 10 meters. If it proves it is not set up for 10 meters it won't work on 11 meters either. If you are NOT a ham and a CBer only, looking for a 3 tube 3-500 CB amp, there may be a three 3-500 LK-550 I know of that is CB only. You can sell that one and look into this LK-550 set up for 11 only.