Elecraft

OT - The HeyPhone

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Edward A. Dauer

OT - The HeyPhone

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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Michael Bower

Re: 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 <[hidden email]> wrote:

> Interesting article on the ARRL web site this morning about communications
> assisting the Thailand cave rescue using 87 KHz SSB.
>
> Ted, KN1CBR
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> Message delivered to [hidden email]
>

k6mkf

Re: OT - The HeyPhone

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: [hidden email] <[hidden email]>
> On Behalf Of Michael Bower
> Sent: Friday, July 13, 2018 7:48 AM
> To: [hidden email]
> Cc: Elecraft <[hidden email]>
> 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 <[hidden email]> wrote:
>
> > Interesting article on the ARRL web site this morning about
> > communications assisting the Thailand cave rescue using 87 KHz SSB.
> >
> > Ted, KN1CBR
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this email
> > list: http://www.qsl.net/donate.html Message delivered to
> > [hidden email]
> >
> ______________________________________________________________
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Grant Youngman-2

Re: OT - The HeyPhone

In reply to this post by Michael Bower

It’s a brief article on the ARRL home page. You don’t have to sign in to read it.

Grant NQ5T
K3 #2091, KX3 #8342

> On Jul 13, 2018, at 10:48 AM, Michael Bower <[hidden email]> wrote:
>
> 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
>
>

Charlie T, K3ICH

Re: OT - The HeyPhone

In reply to this post by k6mkf

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: [hidden email] <[hidden email]> On
Behalf Of Mike Flowers
Sent: Friday, July 13, 2018 10:50 AM
To: 'Elecraft Reflector' <[hidden email]>
Subject: Re: [Elecraft] OT - The HeyPhone

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: [hidden email]
> <[hidden email]>
> On Behalf Of Michael Bower
> Sent: Friday, July 13, 2018 7:48 AM
> To: [hidden email]
> Cc: Elecraft <[hidden email]>
> 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 <[hidden email]> wrote:
>
> > Interesting article on the ARRL web site this morning about
> > communications assisting the Thailand cave rescue using 87 KHz SSB.
> >
> > Ted, KN1CBR
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this
> > email
> > list: http://www.qsl.net/donate.html Message delivered to
> > [hidden email]
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Raymond Sills

Re: OT - The HeyPhone

Hi Charlie:

Correct. That's why links should be enclosed in the < and > characters, which prevent the link from being split.

It's an interesting article 87 KHz SSB... plugged into the ground.

73 de Ray
K2ULR
KX3 #211

-----Original Message-----
From: Charlie T <[hidden email]>
To: elecraft <[hidden email]>
Sent: Fri, Jul 13, 2018 11:14 am
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: [hidden email] <[hidden email]> On
Behalf Of Mike Flowers
Sent: Friday, July 13, 2018 10:50 AM
To: 'Elecraft Reflector' <[hidden email]>
Subject: Re: [Elecraft] OT - The HeyPhone

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

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 <[hidden email]> wrote:
>
> > Interesting article on the ARRL web site this morning about
> > communications assisting the Thailand cave rescue using 87 KHz SSB.
> >
> > Ted, KN1CBR
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this
> > email
> > list: http://www.qsl.net/donate.html Message delivered to
> > [hidden email]
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html

Message
> delivered to [hidden email]

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Elecraft mailing list

Re: OT - The HeyPhone

In reply to this post by Charlie T, K3ICH

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: [hidden email]
[mailto:[hidden email]] On Behalf Of Charlie T
Sent: 13 July 2018 08:13
To: [hidden email]
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: [hidden email] <[hidden email]> On
Behalf Of Mike Flowers
Sent: Friday, July 13, 2018 10:50 AM
To: 'Elecraft Reflector' <[hidden email]>
Subject: Re: [Elecraft] OT - The HeyPhone

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

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 <[hidden email]> wrote:
>
> > Interesting article on the ARRL web site this morning about
> > communications assisting the Thailand cave rescue using 87 KHz SSB.
> >
> > Ted, KN1CBR
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this
> > email
> > list: http://www.qsl.net/donate.html Message delivered to
> > [hidden email]
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html

Message
> delivered to [hidden email]

______________________________________________________________
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rich hurd WC3T

Re: OT - The HeyPhone

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 <
[hidden email]> 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: [hidden email]
> [mailto:[hidden email]] On Behalf Of Charlie T
> Sent: 13 July 2018 08:13
> To: [hidden email]
> 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: [hidden email] <[hidden email]>
> On
> Behalf Of Mike Flowers
> Sent: Friday, July 13, 2018 10:50 AM
> To: 'Elecraft Reflector' <[hidden email]>
> 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: [hidden email]
> > <[hidden email]>
> > On Behalf Of Michael Bower
> > Sent: Friday, July 13, 2018 7:48 AM
> > To: [hidden email]
> > Cc: Elecraft <[hidden email]>
> > 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 <[hidden email]>
> wrote:
> >
> > > Interesting article on the ARRL web site this morning about
> > > communications assisting the Thailand cave rescue using 87 KHz SSB.
> > >
> > > Ted, KN1CBR
> > >
> > >
> > > ______________________________________________________________
> > > Elecraft mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:[hidden email]
> > >
> > > This list hosted by: http://www.qsl.net Please help support this
> > > email
> > > list: http://www.qsl.net/donate.html Message delivered to
> > > [hidden email]
> > >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net Please help support this email
> > list: http://www.qsl.net/donate.html
> Message
> > delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
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> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message
> delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
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> Post: mailto:[hidden email]
>
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> delivered to [hidden email]
>
> ______________________________________________________________
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--
72,
Rich Hurd / WC3T / DMR: 3142737
Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid:
*FN20is*
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Bill Frantz

Re: OT - The HeyPhone

For those that might be interested in further information about
underground radio communications, the National Speleological
Society's Communication and Electronics section has placed back
issues of its publication online for free down load at:

<http://caves.org/section/commelect/drupal/speleonics>

Some of the European radios have had problems in the US because
they are sensitive to the harmonics of our 60 Hz power.

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | When an old person dies, a | Periwinkle
(408)356-8506 | library burns. - Joe McGawon | 16345
Englewood Ave
www.pwpconsult.com | Irish Ethnographer | Los Gatos,
CA 95032

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kevinr@coho.net

Re: OT - The HeyPhone

Thanks Bill,

     Most of my caving was done in the Black Hills. Pringle Cave was
great fun. Twenty foot soda straws, boxwork, popcorn, and a variety of
helictites. Some caving in Wisconsin too.

        73,

            Kevin. KD5ONS

On 07/13/2018 04:32 PM, Bill Frantz wrote:

> For those that might be interested in further information about
> underground radio communications, the National Speleological Society's
> Communication and Electronics section has placed back issues of its
> publication online for free down load at:
>
> <http://caves.org/section/commelect/drupal/speleonics>
>
> Some of the European radios have had problems in the US because they
> are sensitive to the harmonics of our 60 Hz power.
>
> 73 Bill AE6JV
>
> -----------------------------------------------------------------------
> Bill Frantz        | When an old person dies, a   | Periwinkle
> (408)356-8506      | library burns. - Joe McGawon | 16345 Englewood Ave
> www.pwpconsult.com | Irish Ethnographer           | Los Gatos, CA 95032
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Mike Furrey

Re: OT - The HeyPhone

As an avid caver (ham radio got me into caving 50 years ago ... another story) here are a couple of links to what hams have done underground. The big drawbacks are cost and hauling the gear. Currently a group is investigating using the family radios for digipeating. http://aprs.org/cave-link.html
... and in Arizona http://ke7hr.com/caveradio/80meterhfunderground.pdf

73, Mike WA5POK

On Friday, July 13, 2018 7:43 PM, kevinr <[hidden email]> wrote:

Thanks Bill,

     Most of my caving was done in the Black Hills. Pringle Cave was
great fun. Twenty foot soda straws, boxwork, popcorn, and a variety of
helictites. Some caving in Wisconsin too.

        73,

            Kevin. KD5ONS

On 07/13/2018 04:32 PM, Bill Frantz wrote:

______________________________________________________________
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Message delivered to [hidden email]

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Elecraft mailing list

Re: OT - The HeyPhone

In reply to this post by Bill Frantz

Is it radio? The Heyphone relied on magnetic coupling between a loop
underground and another on the surface. At the time the distance was in
the 100 to 200m range, ie too short to form an electromagnetic wave,
therefore not radio. It's an interesting subject.

David G3UNA

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Bill Frantz
Sent: 13 July 2018 16:33
To: [hidden email]
Subject: Re: [Elecraft] OT - The HeyPhone

For those that might be interested in further information about underground
radio communications, the National Speleological Society's Communication and
Electronics section has placed back issues of its publication online for
free down load at:

<http://caves.org/section/commelect/drupal/speleonics>

Some of the European radios have had problems in the US because they are
sensitive to the harmonics of our 60 Hz power.

73 Bill AE6JV

______________________________________________________________
Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
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