Updates and Errata
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50 Years of Amateur Radio Innovation
Click the Read More link below to see an index in PDF format.
Read More -
200 Meters & Down: The Story of Amateur Radio
Click the Read More link below for a PDF version of the 200 Meters and Down index.
Read More -
--Software note: 19th edition software will not run on 64 bit systems, as Microsoft has dropped support for 16 bit software with their 64 bit Operating Systems. Most of the 21st edition software will run on 64 bit systems, though there is some legacy DOS/Basic software that has not been rewritten for 64 bit systems on the companion disk. A helpful PDF document is available here.
--A replacement file for Table 19 in Chapter 18 is now available in PDF Format. Click here to download.
--Notes and errata for the 22nd edition of the Antenna Book can be found here.
--Both the 20th and 21st editions specify the voltage rating for Belden 9258 (RG-8X) cable as 600 Vrms. This is incorrect. It should be 300 Vrms
--Software manuals in Adobe PDF format:
- YW
- TLW
- HFTA
- Notes on Software
Read this document for problems running the software on Windows Vista
New Instructions on Using HFTA and MicroDEM for Locations Outside the USA
The US government has released digital terrain data that covers about 80% of the world (between 60° N and 54° S latitudes). The survey data was generated during a NASA Space Shuttle mission in February 2000, and is called SRTM (Shuttle Radar Topography Mission) data.
Inside the continental USA, parts of Alaska, Hawaii, Puerto Rico and certain US Territories in the Pacific, SRTM data is available with a resolution of 1 arc-seconds (approximately 30 meters, equivalent to seamless NED data). Outside these areas, the US government has restricted the resolution to 3 arc-seconds (roughly 90 meters). Despite these restrictions in resolution, the SRTM digital data is easier to use to generate terrain profiles for HFTA than are any manual mapping methods.
The HFTA.PDF operator’s manual steers the SRTM user to the website for the CGIAR Consortium for Spatial Information and gives detailed information on how to select and download the desired terrain data.
-- Dean Straw, N6BV, has provided updated statistical elevation-angle files for use with the HFTA application contained on the Antenna Book CD. During the original CD installation process you were asked to specify the region where you live so that appropriate statistical elevation-angle files could be installed along with HFTA. You may wish to replace the files currently in this directory with these to achieve greater accuracy. The statistical elevation angles are computed for the full 11-year solar cycle from transmitting sites indicated by the filename.
--Problems reading the Antenna Book CD: If you are running Windows XP and experiencing difficulty reading and installing the Antenna Book CD, MicroSoft has a patch available that may solve the problem. Click here.
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Click here to download a Zip file containing the setup application for the Antenna Compendium Volume 7 supplemental software.
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AView Software for QST, QEX NCJ, Ham Radio
AView is a viewer program for Windows (Windows 98 and XP only). AView is designed for use with several ARRL CD-ROM publications (QEX Collection CD-ROM, NCJ Collection CD-ROM, Ham Radio Magazine CD-ROM and QST View 1995-1999). It makes it possible to search material within these CDs on a limited basis.
NOTE: The software provided here is an update; the prior version of AView must already be installed on your computer for the update to work properly.
1) Download the AV110.zip file (click here) and extract the files into an empty directory.
2) Run the AV110.EXE file from Windows Explorer or using Start|Run.
3) When the initial dialog window appears, click the Setup button.
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First Edition, First and Second Printings – Errata
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 200 ? and 100? should be 200 ? and 100 ? respectively.
Chapter 11
Figs 11-1, 2, 3, 6, 10, Replace 3.8 MHz with 3.75 MHz.
Figs 11-5, 7, 9. While 50 ? 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 50 ? 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 ?, you may determine the optimum value of ?opt, 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”.
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Experimental Methods in RF Design
Author Wes Hayward, W7ZOI, is maintaining a collection of errata for this book on his Web site at http://w7zoi.net/em0_3.html. Also, click "Read More" below to see a PDF for Chapter 1 as it should have appeared in the Revised Edition. Because of a printing error, Chapter 1 contained a number of omissions.
New design software is available for owners of all printings of EMRFD. After saving this ZIP file to your hard drive, (1) Create a directory on your computer where you want the programs to reside. (2) Copy all 28 files from the ZIP file into the new directory. (3) Open Windows Explorer so you can see the folder where you have stored the program. Drag that folder to your Desktop.
Double click the newly created folder that now resides on the Desktop. Then double click the design program you wish to run. You can also double click on the manual, which is a PDF
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Introduction to Radio Frequency Design
Click here to download a compressed Zip file that contains all the companion software for Introduction to Radio Frequency Design.
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ARRL Morse Code Oscillator, How It Works
by Mark Spencer, WA8SME
This supplement is intended for use with the ARRL Morse Code Oscillator kit, sold separately.
Read More -
The MPLab software referenced in the book runs under Windows. It may be possible to run MPLab in a MacOS environment configured for Windows emulation.
Also, for the MPLab software to work properly, you must copy the chapter directory from the CD over to your computer hard drive. Then in MPLab, use the "open project icon" (open project...the green file folder), navigate to where you put the chapter folder, and open the project file for that chapter.
Prototyping Board Parts List
The prototyping hardware (programmer, boards and parts) addressed in this book is available from ARRL as a complete kit (sold separately).
Quanity Part DigiKey Parallax CanaKit Microchip 1 PIC Programmer UK1301 DV164120 1 Prototype Board and Wire Kit 438-1046-nd BB-102W 1 LCD Display 27977 PX-27977 1 LCD Extension Cable 805-00011 PX-805-00011 2 PIC16F676 PIC16F676-I/P-ND IC-PIC16F676 1 MCP41010 Digital Pot 10K MCP41010-I/P-ND IC-MCP41010 4 470 Ω 1/4 Watt Resistor 470QBK-ND R5-25-470R 1 .01uF Capacitor P4582-ND CP-103-50V 2 1N914 Diode 1N194-TPCT-ND DS-1N914 1 5V Regulator 7805 LM78L05ACZFS-ND IC-LM78L05 1 9V Battery Clip BH9V-PC-ND DX-BH9V-PC 4 Button Switch SW403-ND SW-1102B 2 Red LED 67-1105-ND LED-5MRED 2 Yellow LED 67-1116-ND LED-5MYEL 2 Green LED 67-1098-ND LED-5MGRN 2 2N3904 Transistor 2N3904FS-ND TR-2N3904 1 Slide Switch EG1903-ND SW-SPDT 2 20K Potentiometer P16-20KB-SP1 1 Speaker 102-1142-ND DX-102-1142 1 7-Segment LED 7SEG-CCR-56 1 14-Pin DIP Socket AE9989-ND SKT-14 1 8-Pin DIP Socket AE9986-ND SKT-8 2 3-Pin Male Connector WM2001-ND DX-WM2001 2 3-Pin Female Connector WM4301-ND DX-WM4301 10 Connector Pins WM1114-ND DX-WM1114 1 Keyer Circuit Board C120-ARRL PC Board templates and parts layout diagrams for the CW keyer featured in the book are available as a single Zip file. You can download it by clicking
here. A diagram of the circuit board pinouts is available here.
On page 6-7 immediately above the discussion of the ANSEL register is a figure depicting the ANSEL register. There is an error in the depiction of the register, specifically in the mapping of the register bits to the appropriate pins.
The ANS1 bit is incorrectly associated with pin RA2 and the ANS2 bit is incorrectly associated with pin RA3. As the text indicates, pin RA3 has a separate dual purpose and does not have an analog resource assigned to
it. There is no mapping to the ANSEL register for RA3. Instead, the ANS1 bit is associated with pin RA1. The ANS2 bit maps to the RA2 pin. The other bits are correctly associated with the appropriate microprocessor pins.December 7, 2011 -- We have discovered with the manufacturer of the PIC Kit a tolerance issue with the source (supplier) of Q2, a P-channel FET used to switch on the Vpp source. The problem was identified by author Mark Spencer, WA8SME, after hearing from a few customers who were experiencing difficulty programming PICS. Mark has discovered a short solution for the error 27 message that will get you back on track. It will take a few extra steps in the program development and sending them to the PIC, but the procedure will allow the CanaKit programmer to load the programs you develop in MPLab into the PIC.The work-around is described in a PDF document that you can download here.
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In the EX-1 Transmitter/Exciter project, Figure 4-9, capacitor C14 (22 uF at 25V) should be connected between the collector of transistor Q3 and ground, not to the emitter as shown.
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Click here to download a ZIP file containing the software for the "Satellite Tracker Interface" by Mark Spencer, WA8MSE, discussed on page 6-19.
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One the CD-ROM you must search by accessing the index via the binocular icon used by Adobe Acrobat. If you can't find the icon, you may need to select this icon to place it on your toolbar.
In Acrobat
Go to Tools
Customize
Toolbar
Under File toolbar select “search”
After you click on the binocular icon
Select
“In the index named Index.pdx” (3rd option from the top)
This will allow you to search the entire Handbook.
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Click here to download a Zip file containing modeling files that expand on the set originally provided with the book's CD-ROM.
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The ARRL Guide to Antenna Tuners
Page 9-5: The reference to Figure 1 in the text should be to Figure A.
Page 10-3, Figure 10-5: Delete the sentence: At (A), before assembly, at (B) assembled line section.
Page 13-5, Figure 13-5: The reference (red) should be to (solid). The dotted pattern is for the 1/4 l monopole.
Page 13-5, Inverted L section: a sentence says a 1/4 l monopole for 160 meters, for example, needs to be around 130 (not 260) feet long.
Page 14-5; Table 14-1: The correct model number for the Palstar tuner is AT1500CV, for the Ten-Tec tuner is 238A.
Pages 14-34, 14-35; Tables 14-18, 14-19: The correct headings are 80, 40, 20, 15 and 10 meters. The Johnson Matchbox tuners did not cover 160 meters.
The Table of Contents makes reference to an Appendix A, but this material (an article ) does not appear in the printed book. You can download it here.
An expanded Index is available here.
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The article "A Short Boom, Wideband, Three Element Yagi for 10 Meters" was printed without the second page. You can download the entire article in PDF format here.
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ON4UN Low Band DXing, 5th Edition
Figure 8-11 on page 8-8 describes the design of AI1H’s DX Special antenna. The lengths of the coaxial segments are given in meters, but the section shown in the book as being 4.34 meters long is incorrect – the length should be 4.5 FEET – converted to meters it would be 1.39 meters.
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Error Message When Running Version 15 - Version Compatibility
When launching TravelPlus for Repeaters Version 15.0 users may receive an error message:"This version of TravelPlus is not compatible with the version you have installed".
This problem is related to Version 14 (or earlier) not being properly uninstalled as required prior to installing Version 15. Uninstalling and reinstalling Version 15 does not entirely fix the problem because improper settings have already been written to a hidden folder and file.
The following steps to correct apply to Windows XP, Windows Vista and Windows 7 operating systems, with exceptions as noted.
1. Log into computer as Administrator.2. Disable User Account Control (UAC) (Windows Vista / Win7 only). If UAC is on, it must be turned OFF. User Account Control (UAC) works by prompting for permission when a task requires administrative rights, such as installing software or changing settings that affect other users.
To turn UAC off do the following.In Windows Vista (actual steps may vary depending on how interface is set up)
a. Open Control Panel.
b. Select User Accounts and Family Safety. Select Add or remove user accounts
c. If logged in as Administrator this account should already be highlighted.
d. Select Go to the main User Accounts page. (may be at the very bottom)
e. Under Make changes to your user account select Turn User Account Control on or off Change security settings or
f. At Turn on User Account Control (UAC) to make your computer more secure click checkbox to deselect . Then click OK
g. Reboot. This is a must - UAC will be turned off when the computer is restarted.
To later re-enable UAC (if desired) select the above checkbox and restart.
In Windows 7
a. Open Control Panel
b. Select User Accounts.
c. Type in UAC, or go to the System and Security applet.
d. Click on Change User Account Control Settings
e. Turn off UAC by moving the slider to the Never notify position and click OK. If prompted for an administrator password or confirmation, type the password or provide confirmation.
f. Reboot. This is a must - UAC will be turned off when the computer is restarted.
To later re-enable UAC (if desired) move the slider to the preferred notification level and restart.
3. If installed, Version 14 and/or Version 15 should be uninstalled using Add / Remove Programs.
4. Some folders which need to be accessed may be "hidden" or "system" and therefore not immediately visible. If this is the case they may be temporarily shown in order to work with them.
a. From My Computer (or Computer) select from the menu
Tools > Folder Options > View tab
b. In the Files and Folders section, there is an item for Hidden Files and Folders in which there are two radio button choices under Select to Show hidden files, folders and drives,
Select Show hidden files, folders, and drives, i.e.
-- Don't show hidden files, folders, or drives
X Show hidden files, folders, and drives (SELECT THIS ONE)
Further down deselect the radio button for
-- Hide Protected Operating System Files (DESELECT THIS ONE)
and choose Yes at the Warning dialog.
c. Click Apply, then OK and close the window in use. All hidden and system folders and files should now be visible on the computer.
d. When finished with the following steps these settings may then be reverted if desired.
5. Locate the folder where TravelPlus for Repeaters Version 15 was INSTALLED. On most computers, this will be in Program Files at the default directory, i.e.
C:\Program Files\TravelPlus for Repeaters.
If present delete the folder "TravelPlus for Repeaters" in its entirety.
6. Locate the folder where the TravelPlus Version 15 DATA is stored. By default this is normally a hidden folder. It's location depends upon which Windows operating system is in use.
On Windows XP and prior versions of Windows, this folder will be at
C:\Documents and Settings\All Users\Application Data\TravelPlus Version 15.
If present delete the folder "TravelPlus Version 15" in its entirety.
On Windows Vista and Windows 7 this folder will be at
C:\ProgramData\TravelPlus Version 15.
If present delete the folder "TravelPlus Version 15" in its entirety.
7. Reboot computer.
8. Log into computer as Administrator
9. Install TravelPlus for Repeaters Version 15.0
10. Launch the TravelPlus for Repeaters application.
11. Click OK a the Initial Settings dialog (make no setting changes) .
12. If desired, any operating system settings previously modified may now be reverted.
Tech Note 2: Run Time Error 94 - Invalid Use of Null
This can occasionally occur when searching for call sign information in some specific Canada locations . This search functionality is in DataSource at the Call Sign Information tab. To correct this problem, an updated ULS.MDB file is provided with instructions for installation. Click here to download. The file is large ( ~100MB) so be patient.
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Introduction to Emergency Communication Course Transcript
For updates to the course content since publication, click here.
Click on the appropriate file name to download the audio and video files referenced in this course.
Topic File ID File Name Description 7a 1 I - nondirected net.wav Non directed net 7a 2 I – directed net – Nurses Trapped.mp3 Directed net - 7a 3 Clip0007.flv Net Mission 9 4 5-b-2 picture.flv Work environment noise 14 5 Message topic 14 audio file.mp3 Sending a message with voice -
Click here to download the EZNEC files for many of the antenna designs shown in this book.
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The 2011-2012 edition of the ARRL Repeater Directory omitted the 6-meter FM listings for Northern California. You can download a PDF copy of the list here.
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ARRL Exam Review Software Suite
In the General Class portion of the program, for question G5C07, in the equation for turns ratio, the value under the square root sign should be 150, not 125.
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Understanding Basic Electronics
On page 17-3, in the middle column last sentence…
"As the current begins to decrease (between 90° and 180°), the inductor voltage once again opposes this change by creating a voltage of negative polarity."
Rather than "between 90 and 80" it should read "between 90 and 270."