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ARRL Handbook Reference

2019 Edition

  • Overview and Directions

    This web page is for information that extends or supports the ARRL Handbook.  The section for each edition contains links to software referenced in the book, supplemental information and links, and errata and corrections. 


    To purchase the book, click here or browse to the ARRL Store where you can also find numerous other technical publications supporting Amateur Radio.


    Supplemental information is available as a downloadable package beginning with this edition.  You will find an access code on a sheet inside the front cover with complete instructions.  Once installed, use Adobe Reader to access the PDF files. 

    Some readers report that the version Adobe Reader Touch, provided with Microsoft Apps, does not support all of the PDF features.  If this is a problem, download the free Adobe Reader DC from the Adobe website at which does support the necessary elements, such as bookmarks.  Note that the website for downloads will also download a Google Chrome extension and two McAfee security applications unless you opt out by unchecking the necessary boxes.


    Information in support of previous editions can be found at
    ARRL Handbook - 2010-2018 Editions.


    Printed-circuit boards for many current and previous Handbook projects are available from FAR Circuits.

  • Software Utilities

    Tonne Software


    Jim Tonne, W4ENE has generously made available a collection of software from his Tonne Software website including the professional-quality filter design software, ELSIE, and the meter face design aid, MeterBasic.  You can download this collection as a 28.5 Mbyte ZIP file by clicking HERE.  This package includes the following programs:


    ELSIE - filter design
    MeterBasic - meter face layout designer
    SVC Filter - creates designs based on Standard Value Components of the 5% tolerance series
    OptLowpass - optimized amateur-band transmitter output filters
    Helical - helical resonator bandpass filters in the VHF and UHF range
    Pi-EL - impedance matching network designer
    Diplexer network designer - for custom diplexer designs
    JJ Smith - a Smith chart design aid
    QuadNet - designs active allpass networks for single-sideband signal generation
    Class E - amplifier design software using Class E topology
    Tower - computes feed point impedance at the base of a vertical antenna over ideal ground

    PIZZA - generates printable azimuth-equidistant or rectangular maps showing the great-circle path and the sunrise-sunset terminator between your location and selectable prefixes, cities or lat/lon coordinates.


    All programs are self-installing Windows 32-bit software.  See the Tonne Software website for questions and instructions for running the software.  Newer versions may be available independently on the Tonne Software website.




    This section is for software utilities and other programsreferenced in the Handbook or which support the Handbook material and are not included in the main download package.  Check the web page for earlier editions for other software.

    Software by Phil Karn, KA9Q


    The package of software routines by Phil Karn, KA9Q, are available from his GIT repository at The packages are organized in several compressed tar files and there are packages specifically to support the funcube dongle SDR. He has also created a WWV emulator which is available at  The software and associated documentation will be updated by KA9Q as time and other interests permit.


    Chapter 21 - Antennas


    Bill Wortman, N6MW has contributed GAMMAMW4 to correct an error in the previous version of GAMMA in which the software failed to find solutions to the calculations when the combination of the desired feed line impedance exceeds the product of the raw antenna resistance and the gamma step-up value.  The new code fixes that problem.


    Click on the program name to download the new program as a zip file, GAMMAMW4.  It is a simple text-based application that runs in a command prompt (C:\) window and does not require a full Windows installation procedure.  Unzip (extract) the program and double-click it to launch it.


    To use the program, you will need to know:
    - frequency of operation in MHz
    - feed point impedance of the antenna's driven element in R + jX form
    - feed line characteristic impedance
    - the driven element diameter (D)*
    - the gamma rod diameter (d)*
    - spacing between the outer surfaces of the driven element and the gamma rod (S)*

    Enter these values and the program will provide complete outputs including supporting parameters.  * - all dimensions must be in the same units, typically inches or cm.


    The ARRL extends its thanks to N6WM for his contribution, as well as to Greg Ordy W8WWV for making some tests of the code.

  • Supplemental Information, Files, and Links

    Chapter 2 - Electrical Fundamentals


    This downloadable Radio Mathematics document includes a discussion of decibels and coordinates, along with a list of online tutorials on a variety of subjects that may be encountered when working with radio circuits and equipment.


    Chapter 5 - RF Techniques


    The supplemental article "The Galactic Background in the Upper HF Band" by Dave Typinski AJ4CO was omitted from the download package.  It can be downloaded here.


    Section 5.6.2 - Pi Networks

    Ed W6ONT asked about the relationship between RS-RL in Figure 5.58 and R1-R2 in the calculations on page 5.25.

    R1 and R2 are generic values for impedances - either could be the source or the load.  As stated on page 5.26 in the middle column, R1 must be greater than R2 ("R1 > R2").  Figure 5.58 requires that RS < RL, so RL corresponds to R1 and RS corresponds to R2.


    Chapter 10 - Analog and Digital Filtering


    Section 10.10.5, "Diplexer Filter" - the W4ENE program DIPLEXER makes short work of designing this type of filter. It is included in the downloadable supplemental material for the Handbook.  The software is available as part of the downloadable supplemental content with other software from Tonnesoft.


    Chapter 11 - Modulation

    The caption for Figure 11.46 is not completely clear about the spacings of the various tones and modulation products.  The third-order IMD products are separated from the tone modulation sidebands by the difference of the audio tone frequencies, 1 kHz in the example, and the fifth-order IMD products by twice that, or 2 kHz.  The separation of the IMD products themselves, however, is calculated here by Gerald, VA2GLU:


    The 3rd-order products occurring near the signals F1 and F2 are
        2F1 - F2 and 2F2 - F1
    Thus, the frequency separation of these signals is
        2F1 - F2 - (2F2 - F1) = 3F1 - 3F2 = 3(F1 - F2)
    i.e., 3 times the frequency separation of F1 and F2, which is 3 kHz in this example.
    Likewise, 5th-order products closest to the frequencies of F1 and F2 are separated by
        5(F1 - F2), which is 5 kHz in this example.


    Chapter 14 - Transceiver Design Topics


    The GNU Radio community has developed an extensive set of video tutorials and presentations on GNU Radio in various ways.  They are available on the GNU Radio YouTube channel.


    Chapter 21 - Antennas


    Following production of the 2019 edition, additional material on the article "Design of a Two-band Loaded Dipole Antenna" by David Birnbaum, K2LYV was published.  The entire article and Birnbaum's additional comments are available here.


    Chapter 22 - Component Data and References


    Guy K2AV contributes the following information about powdered-iron toroids from various sources to supplement the information in Table 22.16:


    8 Mix    (Yel/Red)      1-50 MHz, u=35 replaces mix #6
    18 Mix  (Grn/Red)    1-50 MHz, u=55, low core loss, similar to mix #8
    40 Mix  (Grn/Yel)       Power conversion similar to mix #26
    52 Mix  (Grn/Blu)      dc-1 MHz, u=75, high permeability


    Chapter 29 - Space Communications


    See the Chapter 5 entry above regarding the paper on Galactic Noise by AJ4CO.


  • Errata and Corrections - 2019 Edition (Updated 2 May 2019)

    Chapter 2 - Electrical Fundamentals


    Figure 2.44, page 2.31 - the schematic for the CMOS inverter at A is, itself, inverted.  The P-channel device should be the upper transistor. (This error was present in earlier editions, as well.)


    Section 2.3.6, page 2.7 - in the middle column, the references to Figure 2.5A and 2.5B should be to Figure 2.6A and 2.6B.


    Chapter 3 - Radio Fundamentals


    Section 3.6.3 on Admittance - the convention for susceptances should be changed such that capacitive susceptance is positive and inductive susceptance is negative.  The phase angle for admittance should also be the negative of the equivalent impedance.


    Chapter 4 - Circuits and Components


    Common-Base Amplifier Design - the procedure incorrectly assigns a value of 1.2 kΩ to RE in Step 4.  The correct procedure is:


    1)      Start by determining the circuit’s design constraints and assumptions: Vcc = 12 V (the power supply voltage), a transistor’s b of 150 and VBE = 0.7 V. State the circuit's design requirements: RE = 50 Ω, RL = 1 kΩ, ICQ = 5 mA, VCEQ = 6 V.

    2)      Base current, IB = ICQ/b = 33 mA

    3)      Current through R1 and R2 = 10 IB = 330 mA (10xIB rule of thumb as with the CE amplifier)

    4)      Voltage across R2 = VBE + IC RE = 0.7 + 5 mA (50 Ω) = 0.95 V and R2 = 0.95 V/330 mA = 2.87 kΩ (use the standard value 2.7 kΩ)

    5)      Voltage across R1 = VCC – 0.95 V = 11.05 V

    6)      R1 = 11.05 V / 330 uA = 33.5 kΩ (use 33 kΩ)

    7)      RC = (VCC – ICQ RE – VCEQ) / ICQ = (12 – 0.25 – 6) / 5 mA = 1.15 kΩ (use 1.2 kΩ)

    8)      AV = (1.2 kΩ // 1 kΩ) / (26 mV / IE) = 105


    Chapter 11 - Modulation

    The equation on page 11.3 should read


    Csin(2πfCt) + ((C*M)/2)sin((2π(fC + fM)t) + ((C*M)/2)sin((2π(fC - fM)t))



    Chapter 17 - RF Amplifiers


    Figure 17.15 - the caption was cut off at the end of the second sentence.  It should read, "...pi-L network at bottom right."