On the back of my Yaesu FT-897, next to each of the antenna connectors, there are lightning-bolt-ish symbols. What do these mean, and is there something I ought to be doing because of that?
I have not found any description of a meaning for these symbols. My best guess so far is that they are warnings of possible high voltage (while transmitting), but they are not enclosed in a triangle as in the standard high-voltage warning symbol. I thought they might be archaic symbols for antennas, but there is an antenna symbol placed between the two connectors.