In article , "Jim Hampton"
writes:

"KØHB" wrote in message
link.net...

"Jim Hampton" wrote

Just out of curiosity, do you have an idea of how
much power the Navy uses on the VLF stuff?

I don't know current QRO, but in the 70's the COMSUBLANT transmitter at
Cutler was 1,700,000W on 15.9KHz and the COMSUBPAC transmitter at Jim
Creek was 2,200,000W on 17.1KHz. The ELF site at Clam Lake is
reportedly engineered for just under 1,000,000,000W at somewhere just
above powerline QRG, 75Hz if I remember correctly. The antenna is just
under 29 miles long.

73, de Hans, K0HB


Hello, Hans

And *we* are paying for it
Those are *big* qro rigs LOL

Sort of.

2,200,000W looks like a lot -and it is a lot, in the world of radio
transmitters. 2.2 million watts!

But compare it to other technologies....

2.2 million watts is only 2200 kW. At 746 W per HP, that works out to just
under 2,950 HP. You could get more than that out of a single 1950s era diesel
electric railroad locomotive, or a WW2 bomber - or about a dozen SUVs.

Compared to the power of even a "small" USN ship or submarine...

The 1 gigawatt ELF system is a bit bigger, of course. Count the cars on the
Genessee Expressway where it crosses Jefferson Road at rush hour and see how
quickly you get to the million-horsepower mark...

73 de Jim, N2EY