[Elecraft] K3S ELF 10KHz

[Harry Yingst]

Years ago I had an Selective voltmeter and an signal generator

I was surprised that the selective voltmeter could hear the signal generator across the room at what one would consider audio ranges.





      From: Doug Smith <doug at w7kf.com>
 To: Mel Farrer <farrerfolks at yahoo.com> 
Cc: Elecraft Reflector <elecraft at mailman.qth.net>
 Sent: Thursday, March 23, 2017 7:15 PM
 Subject: Re: [Elecraft] K3S ELF 10KHz
   
Yup.  Earlier in the thread Mike / KK5F pointed that out.  He was on the RX end of the circuit.

We monitored stations from Perth, somewhere in the UK, east coast of USA, west coast of USA, etc. etc.  Must have been six or eight stations on the air.  We also monitored WWVB but I think that was the highest frequency (60 kHz) we cared about.

It was all RTTY as I recall.  We didn’t bother trying to decode the stuff — it was encrypted and we didn’t care about the content.  We only cared about signal strength.  Fun times; long time ago..

-Doug, W7KF


> On Mar 23, 2017, at 4:55 PM, Mel Farrer <farrerfolks at yahoo.com> wrote:
> 
> Doug,
> 
> Didn't the Navy use those frequencies to communicate with the submarines?  I remember something about 30 KHz and an Atlantic Island and something Washington with a setup???
> 
> Long in the tooth ham!
> 
> Mel K6KBE

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