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1. [Towertalk] NEC 4 Windows limitations? (score: 1): Author: jljarvis@abs.adelphia.net (jljarvis); Date: Mon, 25 Mar 2002 13:33:35 -0500; Folks, I'm attempting to model stacked Log Periodics, and have run into what looks like a limitation in NEC 4 Windows. Each LPDA has 8 elements. Each element has a source, with the phase reversing by; /archives//html/Towertalk/2002-03/msg00629.html (7,010 bytes)
2. [Towertalk] NEC 4 Windows limitations? (score: 1): Author: W4EF@dellroy.com (Mike); Date: Mon, 25 Mar 2002 11:25:39 -0800; Hi Jim, The LPDA models I have seen, use a single source connected to a balanced transmission line running the length of the LPDA. The element connection to the transmission line are alternated to cr; /archives//html/Towertalk/2002-03/msg00632.html (8,121 bytes)
3. [Towertalk] NEC 4 Windows limitations? (score: 1): Author: k2av@contesting.com (Guy Olinger, K2AV); Date: Mon, 25 Mar 2002 21:03:22 -0500; Construct the boom's feedline with the inversions, etc and use a single source. Only way you actually will model the REAL performance closely. Multiple sources allows you to specify levels and phasin; /archives//html/Towertalk/2002-03/msg00646.html (8,088 bytes)

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