The Jim Creek antenna facility is amazing - a series of over mile long wires (cables) for the radiator strung from mountain to mountain across a valley being fed with IIRC a megawatt of VLF RF.
73, Ron AC7AC -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Mike Morrow Sent: Thursday, March 23, 2017 3:04 PM To: [email protected] Subject: Re: [Elecraft] K3S ELF 10KHz I didn't understand the reference to audio either. When I on the crew of a US ballistic missile submarine more than 40 years ago, our main communications receivers were AN/BRR-3 units whose full frequency range was only 14 to 30 kHz. These received signals from coastal stations operating at megawatt output levels, but there was no one near such a station with his ear drums damaged by or even sensitive to the station's continuous output. :-) Anyone can listen to such signals as they exist today. I'm not sure what the point would be...everything down there is very deeply encrypted. Mike / KK5F ------------------------------ >> Wait a second, there's a big difference between a sound pressure wave >> and an electromagnetic wave at 10-kHz... ------------------------------- > Receivers THAT I AM AWARE OF begin coverage at 15 khz. Used to listen > to > 16 khz from GBR in England on an RAL when lived in Florida. > > After all, 10 khz -is- audio. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
