[Elecraft] OT - The HeyPhone

[rich hurd WC3T]

I also saw the original at Hackaday here:
https://hackaday.com/2018/07/11/ham-designed-gear-used-in-thailand-cave-rescue/

On Fri, Jul 13, 2018 at 11:33 AM David Cutter via Elecraft <
elecraft at mailman.qth.net> wrote:

> I liaised with John around 25 years ago to set up what we thought would be
> a
> unique event: communicating from underground in Stump Cross Caverns North
> Yorkshire, to an HF station on ground, then to the world.  We had a couple
> dozen scouts and members of my club helping at the event for  JOTA.  We ran
> out of time before we solved all the little issues but it was an intersting
> experiment.  He was using an original Hey Phone and wasn't sure if it was
> legal - I thought it was arguably not a radio wave, ie could propagate into
> space.  At the time we were licensed for 73kHz but that was too close to
> big
> inerferers, Rugby I think, hence moving up a little.
> David G3UNA Ripon ADARS
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Charlie T
> Sent: 13 July 2018 08:13
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] OT - The HeyPhone
>
> When you click on the link, be sure to capture BOTH lines because if you
> simply click on top line, it will NOT add the second line and will come
> back
> with a "file-not-found" pop-up.
>
> 73, Charlie k3ICH
>
>
>
>
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net>
> On
> Behalf Of Mike Flowers
> Sent: Friday, July 13, 2018 10:50 AM
> To: 'Elecraft Reflector' <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] OT - The HeyPhone
>
>
> http://www.arrl.org/news/radio-technology-designed-by-radio-amateur-used-in-
> thailand-cave-rescue
> <http://www.arrl.org/news/radio-technology-designed-by-radio-amateur-used-in-thailand-cave-rescue>
>
>
> - 73 and good DX de Mike, K6MKF, Past President - NCDXC
>
> > -----Original Message-----
> > From: elecraft-bounces at mailman.qth.net
> > <elecraft-bounces at mailman.qth.net>
> > On Behalf Of Michael Bower
> > Sent: Friday, July 13, 2018 7:48 AM
> > To: edauer at law.du.edu
> > Cc: Elecraft <elecraft at mailman.qth.net>
> > Subject: Re: [Elecraft] OT - The HeyPhone
> >
> > If this article is for public consumption (not just ARRL members),
> > could
> you please
> > post a link?
> >
> > If not for public consumption, they missed a great opportunity.
> >
> > Michael N4NMR
> >
> >
> > On Fri, Jul 13, 2018 at 10:29 AM Dauer, Edward <edauer at law.du.edu>
> wrote:
> >
> > > Interesting article on the ARRL web site this morning about
> > > communications assisting the Thailand cave rescue using 87 KHz SSB.
> > >
> > > Ted, KN1CBR
> > >
> > >
> > > ______________________________________________________________
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> > >
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-- 
72,
Rich Hurd / WC3T / DMR: 3142737
Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
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