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ARRL Radio Designer, was published by ARRL beginning in late 1994. It was discontinued in August 2000 and is no longer available.

ARRL Publications

ARRL's ARRL Radio Designer coverage is available as document files in Adobe Inc's Portable Document Format (PDF) form. Adobe's free PDF viewer/printer program, Acrobat™ is easy to obtain and install.

QST's Exploring RF Column

The Exploring RF column carried ARRL Radio Designer application notes and sample circuit files. All material presented is copyright ©1995-1996 by ARRL.

• January 1995: Using ARRL Radio Designer's Optimizer to simulate adjustable antenna tuners. Column file, rf_1-95.pdf (93,253 bytes); companion circuit file, exrf9501.txt.

• March 1995: Modeling a direct-conversion receiver's audio response and gain with ARRL Radio Designer. Column file, rf_3-95.pdf (170,674 bytes); companion circuit file, exrf9503.txt.

• May 1995: Transistor modeling (Part 1), including the use of ARD TWO elements characterized by S-parameter data in databank, .FLP and .S2P files. Column file, rf_5-95.pdf (55,603 bytes); no companion circuit file.

• July 1995: Transistor modeling (Part 2), including how to use ARD's optimizer to adjust BIP and FET parameters for congruency with S-parameter data. Column file, rf_7-95.pdf (109,934 bytes); companion circuit file exrf9507.ckt; companion zipped circuit and report files exrf9507.zip.

• September 1995: Transistor modeling (Part 3), including the use of S-parameter files that include device noise data, and introducing ARRL Radio Designer 1.5. Column file, rf_9-95.pdf (75,023 bytes); companion zipped circuit and report files, exrf9509.zip.

• November 1995: Using ARD to explore resonance effects and examine circuitry in commercial radio equipment. Column file, rf_11-95.pdf (211,893 bytes); companion zipped circuit and report files, exrf9511.zip.

• Exploring RF 1995: All six Exploring RF columns for 1995 (rf1995.pdf, 709,127 bytes).

• January 1996: An ARRL Radio Designer Voltage Probe Mystery: The 3-dB Pad that Loses 9 dB. Column file, rf_1-96.pdf (107,821 bytes). Companion zipped circuit and report files, exrf9601.zip (982 bytes).

• March 1996: Gyrating with ARRL Radio Designer. Using ARD's op-amp element to simulate high-value inductors. Column file, rf_3-96.pdf (133,728 bytes). Companion zipped circuit and report files, exrf9603.zip (5,858 bytes).

• May 1996: Frequently Asked Questions About ARRL Radio Designer Reports and Report Editor. Column file, rf_5-96.pdf (57,143 bytes). Companion zipped circuit and report files, exrf9605.zip (3,072 bytes).

• July 1996: "ARRL Radio Designer Versus Oscillators," Part 1: Using ARD to model circuit stability and indicate the likelihood of oscillation. Column file, rf_7-96.pdf (99,624 bytes). Zipped circuit and report files, exrf9607.zip (4,145 bytes).

• September 1996: "ARRL Radio Designer Versus Oscillators," Part 2: Using ARD to determine oscillator component values that make oscillation likely, and how close to the edge of nonoscillation an oscillator circuit may be. Column file, rf_9-96.pdf (88,241 bytes).Zipped circuit and report files, exrf9609.zip (1,035 bytes).

Other ARRL Articles

• circles.pdf (559,215 bytes): "ARRL Radio Designer and the Circles Utility," by William E. Sabin, WØIYH, QEX, Sep/Oct and Nov/Dec 1998.

• sabin895.pdf (85,116 bytes): "Broadband HF Antenna Matching with ARRL Radio Designer," by William Sabin, WØIYH, QST, August 1995.

• rohde94.pdf (1,945,894 bytes): "Designing Low-Phase-Noise Oscillators," by Dr. Ulrich L. Rohde, KA2WEU, QEX, October 1994.