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Chapter 6,
Page 6-2, “Wire length, 468/F,” would be better labeled “Wire length (feet) = 468/f, f in MHz”
Page 6-4, Table 1 should be labeled as Table 6-1.
Chapter 8.
Figure 8-6. The dashed line should read “Perfect Ground.”
Chapter 9.
Page 9-3, right column end of first paragraph. There should be a reference to Fig 9-5.
Page 9-4, left column. The two references to Fig 9-5 should be to Fig 9-6
Chapter 10,
Fig 10-3. The indicated 180° phase reversal is generally obtained by twisting the transmission line to one dipole by half a turn.
P 10-4, top of first column the 200λ and 100λ should be 200Ω and 100Ω respectively.
Chapter 11,
Figs 11-1, 2, 3, 6, 10, 13. Replace 3.8 MHz with 3.75 MHz.
Figs 11-5, 7, 9. While 50Ω balanced line would be great for this application, it is not available. Instead the figures should show a 1:1 balun at the feed point and 50Ω coaxial cable going to the radio.
Fig 11-13. The frequency axis should be the same as Fig 11-14.
Chapter 12,
Table 12-1, the four subheads, Amateur, Aeronautical, Maritime and Broadcast should be spaced above the four frequency columns.
Chapter 19,
Figs 19- 1, 3, 6, 7, 8, 9, 11, 12: “Freq = 10 MHz” should be “Freq = 145 MHz”
Chapter 21,
“Designing an LPDA” p 21-4, bottom of center column should read:
For any value of τ, you may determine the optimum value of σopt, as follows:
Chapter 22,
p. 22-3, line 6, “...the so-called diamond shape, is considered by some to be less vulnerable to ice build up...”
p. 22-4, end of 3rd paragraph, add frequency “... becomes more evident as you move to higher frequency bands ...”
p. 23-6, bottom of left column, add frequency” ... the SWR is quite high on the higher frequency bands ...”
Chapter 23,
Fig 23-11, the correct value of C1 is 100 pF. The note should say that if C2 is around 75 pF, C1 is not needed.
Chapter 24,
Review Question 24-1, the gap should be closed.
Chapter 26
p 26-6, last line in first subsection: “and Eq 2 reduces to:” should be “and Eq 3 reduces to:”
Appendix A,
p A-2, The last sentence in the first section (EZNEC) should say: “The demo is restricted in size to 20 segments, enough to get a feel for modeling simple antennas, such as a dipole.”
Figure A-1. The right hand end of the antenna should be labeled “End 2 Coordinates: X, Y, Z = 23.9, 0, 49.2 Feet”.
Index,
Add entry:
Balun 6-3
Change entry; Balun 9-6 to Balun 9-4
