Earlier quoted context omitted.
Certainly true for K6KPH on amateur radio frequencies. I wonder if the same is true for commercial circuits on KPH and KFS? Your comment on licensing got me wondering... I wonder what license the operators for KPH and KFS have these days? I guess there is some kind of general commercial radio operator's license now. Long ago, I started studying for a commercial radiotelegraph operator's license, just for the novelty.…
You need the General Radiotelephone Operator License ( https://www.fcc.gov/wireless/bureau-divisions/mobility-divis... ). Yes, they are still issued. 20 WPM plain language code test, 16 wpm code group test, plus written exams.
The code exam would be for a commercial telegrah licence though, isn’t it? Did the license become combined somehow?