I had a problem last month because they saw the detached antenna of my HT on the x-ray and were concerned about the "spikey thing". Once they dug through the bag and found it they were ok with it. I've travelled many times with radios, gps, cameras both in and out of the country with no problem.
BTW, I found out this year there are new rules concerning Lithium batteries in your luggage so check the TSA web site for the latest. Some handhelds and cellphones and cameras use them.