[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:
>
>   <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:Elecraft at 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 kevinr at coho.net
>