Why 23 khz?
In the last week or so I've noticed multiple stations "listening" to 23 khz. At first I just thought it was a typo but after seeing other users there perhaps its more than that. And always 23 khz. I've kicked a few of the instances and they have come right back. Altho this example is from China, the others haven't been. No user info of course....
RX0"(no identity)" (220.127.116.11, Shenzhen,China) 23.00 kHz iq z0 0:04:30 1:25:46
Just curious if others have noticed this? I can't imagine for what purpose they would attempt to extract anything out of the solar inverter noise I have on 23 khz!