This refers to the 2 element vertical array switching at Fig 11-45 in the 4th
edition of LBD (Lewallen feed)
Using the software supplied with the book along with the data in Fig 11-14
(Zarray = 17.7+j17.1) I'm failing to confirm the 50ohm matching L network (L2,
C2). It appears to tell me L2 should be in the shunt position with C2 in series
to L1. The broadside position matching network L3/C3, does check out ok using
similar data from the corresponding theoretical diagrams, as do other later
examples of 3 and 4 element arrays where the matching network is included in
So I'm wondering if this may be a mistake and have been unable to find any
posted errata. I want to build this for 40m and some reassurance that I haven't
missed something obvious would be good..!
Thanks and happy new year.
Stewart Rolfe, GW0ETF
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