Thanks, BradtheRad for responding to this apparently weird unusual topic and perhaps poorly worded.
The plain ferrite loopstick would be as you may imagine, about 10cm long, 1cm diam. The planned transmitting power around only 1 Watt. The expected range hopefully over 10 metres, ideally 50 metres, to be received by another loopstick. It is not about distant communication. And ferrite saturation at 1 W will have to be watched.
With these humble specifications, I wonder if a 1 Watt 100KHz carrier modulated with voice audio fed to the loopstick coil is needed,
or if direct 1 Watt voice audio -no carrier- fed to the loopstick coil would produce a not-too-different transmission range.
Weird question, agreed, but am not crazy... yet. 8-O
Like asking if 100KHz will have much more propagation range than a 1KHz signal, both at same 1 W transmission power, or would not be 'that' much.