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Experimental Methods in RF Design
The article "A Matched Filter for EME,"
from the Proceedings of the Central States VHF Society, 1995, by C. R.
MacCluer, was omitted from the CD-ROM. Click here to
download a PDF version of this article (2,688,464 bytes).
Table of
Contents: Item 2.2 should read Amplifier Design Basics.
(5Mar03)
p2.4, left col, 2.1
inches down from text top. The bxIb should be (beta)xIb where (beta) is the Greek letter
and the b in Ib is a subscript (26Mar03)
p2.4, left col, 3.2 inches down
from top of text: This should be ".....11.4 V across 100 k-Ohm, or
114 uA.
If transistor beta=100, the collector current is 11.4 mA." Error was in the m and u
related to milli and micro amp. (24Feb03)
p2.6, left col, almost at bottom: That current is 752 uA, not mA. Also, base current is 19 uA, not mA. (24Feb03)
p2.15, middle column, 1.8 inches down from top of text: change
figure ref. Should read "In Fig 2.40 we saw ...." (24Feb03)
p2.29, Fig. 2.88. The leaded capacitors have 0.1 inch leads, not 4 inch. Also, the chip cap is a
size 0805,
not 0905. (24Feb03)
p2.36, caption for Fig 2.97: inductors are "L1=0.71 uH = 13t" and "L2=1.05 uH" Both microhenry rather than
millihenry. (24Feb03)
p3.14, Table 3A. The inductors are all in uH (microhenry) rather than mH (millihenry.) (24Feb03)
p3.24. Figures 3.46 and 3.47: Exchange the two figures while
leaving the captions in place. That is, the Chebyshev filter is the one
with a flat passband response and severe "wings" on the group delay. (24Feb03)
p3.24. Fig. 3.48 should be the following:
Fig 3.48
(same caption) (24Feb03)
p3.27, left col, 2nd line
below equation 3.26. Text should refer to Equation 3.25.
(5Mar03)
p4.15, caption for photo:
The caption should make reference to Fig. 4.28 rather than 4.22. (24Feb03)
p4.17, Fig. 4.33. D1 is the MV209 varactor diode while D2 is the
1N4152. Both are labeled D1 in the figure. (24Feb03)
p4.27. Wrong
photo. Here's a version of the right photo:
(24Feb03)
p4.27, Fig 4.51. The 3N211 should be labeled as Q2. (24Feb03)
p6.14. Fig 6.37. The figure was missing the reference designators used
in the caption. The updated figure is shown below. (17Mar03)
Fig 6.37
p6.20. Fig. 6.49(C). The bottom most Vx should be Vy. (16Mar03)
p6.21. Fig. 6.53(D).
The line from the emitter marked "V-d" should be marked "V-c" . (16Mar03)
p6.62. Fig. 6.112 is
missing some parts. Here's the proper figure:
Fig 6.112. (24Feb03)
p6.86, Fig 6.151.
Change the caption. Final sentence should become "The
amplifier input resistors, now 6.8K, can be changed to set the output
power." (7Mar03)
p6.87, Fig. 6.152. There are
missing reference designators on the drawing. Also, change the caption
to read "Fig 6.152--SSB Generator. R615 and R624 should be
...." The updated figure is shown below: (15Mar03)
Fig 6.152.
p6.90, Section Title. This
should be section number 6.11 .. (7Mar03)
p6.91. Fig. 6.158. L1-L4
are 360 nH, 10 turns #26 on a T30-6. (4Mar03)
p8.1. The title of the chapter is Direct Conversion
Receivers rather than
Direct Converstion Receivers. (24Feb03)
p8.5. Fig. 8.7. Add a 560 pF capacitor in parallel with the 150 Ohm resistor in
the first audio amplifier. (20Mar03)
p8.6. left text column, 4.7 inches down from top of text.
Replace mV with uV. (20Mar03)
p8.8. Equation 8.3. The units should be watts/meter^2
(watts per meter
squared with a superscript) rather than watts per meter. (20Mar03)
Chapter 9 figures: Many of the schematics in this chapter are
missing the semiconductor types used. We will fill in the details later,
but the list is small. The usual NPN is (you guessed it) a 2N3904 while the 2N3906 is the PNP. The JFET of choice is
the J310, although
the metal can version, the U310, is the better choice for common gate amplifiers.
See Chapter 6 for comments on such amplifiers. The op-amps are
either the LM837N or the 5532. The LM837N is preferred for the early stages where noise is
critical. A 10 pF chip capacitor between op-amp output and the inverting input
will usually cure any tendency toward instability. (24Feb03,
update 2Mar03)
p9.29, Fig 9.49. The
caption is not correct. The caption should read "Phase errors of Fig 9.48 network pair."
(20Mar03)
p9.29, Fig. 9.50. The caption is not correct. The
caption should read "A pair of all-pass networks that
provide at least 21 dB suppression from 360 to 2050 Hz." (20Mar03)
p9.34, Fig 9.62. The caption is not correct. The
caption should read "A basic miniR2
schematic. This simplified version uses some different parts values and
requires matching of the diplexer components." (20Mar03)
p10.9. Fig. 10.12. The text in the middle of the graph is intended to be a footnote. (24Feb03)
p10.26. left column, 5.0 inches down from top of text. Replace
"1000/1024"
by "10,000/1024" (24Feb03)
Page last modified: 10:38 AM, 03 Oct 2007 ET
Page author: epubs@arrl.org
Copyright © 2007, American Radio Relay League, Inc. All Rights Reserved.
