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
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