Re: [Elecraft] OT - The HeyPhone

[Mike Furrey]

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  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:
> 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:
>
>   
>
> 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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Re: [Elecraft] OT - The HeyPhone

[David Cutter via Elecraft]

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: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Frantz
Sent: 13 July 2018 16:33
To: elecraft@mailman.qth.net
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 

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Re: [Elecraft] OT - The HeyPhone

[kevinr]

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:


  

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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Re: [Elecraft] OT - The HeyPhone

[Bill Frantz]

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:


  

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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Re: [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@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-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Charlie T
> Sent: 13 July 2018 08:13
> To: elecraft@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-boun...@mailman.qth.net 
> On
> Behalf Of Mike Flowers
> Sent: Friday, July 13, 2018 10:50 AM
> To: 'Elecraft Reflector' 
> 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-boun...@mailman.qth.net
> > 
> > On Behalf Of Michael Bower
> > Sent: Friday, July 13, 2018 7:48 AM
> > To: eda...@law.du.edu
> > Cc: Elecraft 
> > 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 
> 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:Elecraft@mailman.qth.net
> > >
> > > This list hosted by: http://www.qsl.net Please help support this
> > > email
> > > list: http://www.qsl.net/donate.html Message delivered to
> > > mbo...@bbunch.org
> > >
> > __
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> >
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> > list: http://www.qsl.net/donate.html
> Message
> > delivered to mike.flow...@gmail.com
>
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Re: [Elecraft] OT - The HeyPhone

[David Cutter via Elecraft]

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-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Charlie T
Sent: 13 July 2018 08:13
To: elecraft@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-boun...@mailman.qth.net  On
Behalf Of Mike Flowers
Sent: Friday, July 13, 2018 10:50 AM
To: 'Elecraft Reflector' 
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: elecraft-boun...@mailman.qth.net 
> 
> On Behalf Of Michael Bower
> Sent: Friday, July 13, 2018 7:48 AM
> To: eda...@law.du.edu
> Cc: Elecraft 
> 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  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:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net Please help support this 
> > email
> > list: http://www.qsl.net/donate.html Message delivered to 
> > mbo...@bbunch.org
> >
> __
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> list: http://www.qsl.net/donate.html
Message
> delivered to mike.flow...@gmail.com

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Re: [Elecraft] OT - The HeyPhone

[Raymond Sills]

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 
To: elecraft 
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: elecraft-boun...@mailman.qth.net  On
Behalf Of Mike Flowers
Sent: Friday, July 13, 2018 10:50 AM
To: 'Elecraft Reflector' 
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: elecraft-boun...@mailman.qth.net 
> 
> On Behalf Of Michael Bower
> Sent: Friday, July 13, 2018 7:48 AM
> To: eda...@law.du.edu
> Cc: Elecraft 
> 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  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:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net Please help support this 
> > email
> > list: http://www.qsl.net/donate.html Message delivered to 
> > mbo...@bbunch.org
> >
> __
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> list: http://www.qsl.net/donate.html
Message
> delivered to mike.flow...@gmail.com

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Re: [Elecraft] OT - The HeyPhone

[Charlie T]

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-boun...@mailman.qth.net  On
Behalf Of Mike Flowers
Sent: Friday, July 13, 2018 10:50 AM
To: 'Elecraft Reflector' 
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: elecraft-boun...@mailman.qth.net 
> 
> On Behalf Of Michael Bower
> Sent: Friday, July 13, 2018 7:48 AM
> To: eda...@law.du.edu
> Cc: Elecraft 
> 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  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:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net Please help support this 
> > email
> > list: http://www.qsl.net/donate.html Message delivered to 
> > mbo...@bbunch.org
> >
> __
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> list: http://www.qsl.net/donate.html
Message
> delivered to mike.flow...@gmail.com

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Re: [Elecraft] OT - The HeyPhone

[Grant Youngman]

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  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
> 
> 

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Re: [Elecraft] OT - The HeyPhone

[Mike Flowers]

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-boun...@mailman.qth.net 
> On Behalf Of Michael Bower
> Sent: Friday, July 13, 2018 7:48 AM
> To: eda...@law.du.edu
> Cc: Elecraft 
> 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  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:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net Please help support this email
> > list: http://www.qsl.net/donate.html Message delivered to
> > mbo...@bbunch.org
> >
> __
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Message
> delivered to mike.flow...@gmail.com

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Re: [Elecraft] OT - The HeyPhone

[Michael Bower]

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  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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[Elecraft] OT - The HeyPhone

[Dauer, Edward]

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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