From QRZ.Com, the Icom handout, and Part 97 Of The FCC Rules -
Ham Radio Glossary - An overview of amateur radio terms.

J-Pole
An antenna design that is relatively easy to assemble yourself. For
more information, see http://www2.arrl.org/tis/info/JPole-V.html
(Courtesy of ARRL). Note: The basic J-pole design can be applied to any frequency, as long as measurements are proper for that frequency.
Furthermore, a 2-meter J-pole will also resonate on the 440 MHz (70 cm)
ham band, making for a reasonable dual-band antenna.
--- SBBSecho 3.14-Win32
* Origin: The Thunderbolt BBS - Little Rock, Arkansas (954:895/7)