Tom H wrote:
submarine control frequencies, 200 - 300 Hz

wrote in message
ps.com...

I am just curious. Thinking of building some antennas for specific
bands and was wondering wahat was most popular.




I'm also curious.

Whose left besides the Russians?

I understand the USN has, or is about to, shut down their operation-
which was quite a way below 200 Hz anyway.

Dave