[TowerTalk] "J" poles array question

AUGUSTO YIPMANTIN lito@rpp.com.pe
Mon, 21 Sep 1998 11:50:16 -0500


** Proprietary **

To the group,

can any body tell me how to measure gain and irradiation pattern of an 4 "J" poles array placed in a single towe, spaced 0.8 wavelength each one of the other and connected like the followin diagram:

                     cable "a"
             J--------------+
                             |                cable "b"
                             +-----------------------+
                             |                         |
             J--------------+                        |
                                                       |
                                                      += feed poinf
             J--------------+                        |
                             |                         |
                             +-----------------------+
                             |
             J--------------+

cable "a" (RG-11) length : (5 * 300/f)(0.66)(0.25)
cable "b" (RG-11) length : (7 * 300/f)(0.66)(0.25)

suppose f=146 MHz. or 430 MHz.

Augusto, OA4CVT


--
FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm