Files by Issue date
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File Name Issue Description Author(s) 0125 qex Noe January-February A Flexible Telemetry Reporter for Remote Amateur Radio Stations and Repeaters Mark C. Noe, KE1IU and Palmer G. Noe, KC1LXO 0325 qex Lechasseur March-April Yaesu FT-891 Control Box Mario Lechasseur, VE2KEC -
File Name Issue Description Author(s) Call Sign 4nec2-QEXfiles-Matchng-Network-WorkSheets.zip March/April Add Matching Networks, Attenuator Pads and Transformers to Your 4nec2 Model Richard Place WB2JLR QEX-2403-Geers-QEXfiles.zip March/April Methodically Predicting Accurae Crystal Filter Performance Steve Geers KA8BUW QEX-2403-Johnson-QEXfiles.zip March/April Laboratory RF Power Meter Gary Johnson NA6O QEX-2405-Audet-QEXfiles.zip May/June Optimizing the Design of Large Ratio UNUN Transformers from Tests and Simulations Jacques Audet VE2AZX QEX-2405-Ahlgren-QEXfiles.zip May/June The Stepped Line Transformer David J. Ahlgren K1BUK QEX-2405-LeCren QEXfiles.zip May/June HF SSTV Transmitter Anthony Le Cren F4GOH/KF4GOH QEXfiles-2409-Stensby-QEXfiles September/October A Diode-Model-Based RF Power Sensor John Stensby N5DF QEX-2409-Pollock QEXfiles September/October A Stable and Accurate 0 to 40 MHz Generator Kenneth Pollock WB3JOB QEX-2409-Crumrine QEXfiles September/October A Single Stage 1500 Watt 65 Volt LDMOS Amplifier for the 6 Meter Band Ralph Crumrine N0KC QEX02409-Koehler QEXfiles September/October Class-ESSB Transmission, SDR and the Dreaded Arctangent Problem James A.R. Koehler VE5FP QEX1124-Titchener QEXfiles November/December Decodeing Morse CW with a Variable-Length Self-Synchronizing Code Titchener ZL4CDE -
Content
Issue
Title
Author(s)
Call Sign
January/February
Custom Front Panels with a Twist
Hansen
KU7Q
January/February
DSP CW Filter
Geers
KA8BUW
Additional Information May/June The Lentz Receiver: Tayloe Evolved Lentz AG7FF Additional Information July/August 30 THz Experiment Over 100 m Distance Lecybyl/Lecybyl M7HBL/M0LRH Errata July/August Transformer Balun Circuit Characteristics Revealed Victor W4AMV Errata July/August Self-Paced Essays # 18: Vector Network Analyzer Nichols KL7AJ Errata September/October 30 THz Experiment Over 100 m Distance Lecybyl/Lecybyl N7HBL/M0LRH Additional Information September/October Accurate Capacitance on the Cheap Marti KI7NNP Additional Information November/December EZNEC Pro+ v.7.0 and AutoEZ, Part 1 De Canck ON5AU -
File Name Issue Description Author(s) Call Sign Additional Information January/February Unraveling the Links in Link Coupled Circuits Alan Victor W4AMV Additional Information May/June An Arduino Based Dial Box for Extending the Control Panel of Modern Transceivers Mark Noe KE1IU Additional Information May/June Build Your Own 'Gun" (Disk Yagi) Antenna Jean-Claude Henaux and Franck Daout Additional Information May/June ATWIFI Clock/Weather/Solar Display Richard H. Grote K6PBF Additional Information May/June Sweep Generator Measurement System - Take 5 Dr. Sam Green W0PCE Interface Description September/October SSB Receiver Controlled by a Smartphone Benjamin Neveu -
File Name Issue Description Author(s) Call Sign Westmoreland January/February Do-It-Yourself NMEA Based GPS Timer Display Westmoreland AJ6BC Westmoreland - code link January/February Do-It Yourself nmea Based GPS Timer Display - link for code Westmoreland AJ6BC LeCren January/February HF SWR Meter for the Viisually Impired LeCren F4GOH/KF4GOH DeNeef March/April RF Exposure Safety for a 70 cm Ban Collinear Dipole Array DeNeef AE7PD Appendix July/August Designing Antenna Systems for Low Common Mode Current in Coaxial Feed Pawlowski SP3L Brock-Fisher July/August Fixture and Method for Measuring Q of Inductors Using a VNA or Spectrum Analyzer Brock-Fisher K1KP Koellen July/August Telegram Your Commands Koellen AI6XG Additional Information September/October Miniature SMA RF Step Attenuator Alldread VA7TA Additional Information September/October CTR2 - An HMI for All of Your Radios Hansen KU7Q Supplemental Information November/December Controlling a 16x2 LCD with the Texas Instruments MSP430G2553 Kretzschmar AE7AX Additional Information November/December NanoVNA SMD Tweezers Alldread VA7TA Panel Text
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Content
Issue
Title
Author
January/February
Multi-Band VHF+ Local Oscillator and Remote
Antenna SwitchMike Lewis, K7MDL
January/February
A Simple Inexpensive Accurate Vector Impedance
MeterJames A. Koehler, VE5FP
January/February
Technical Notes
Whitney
March/April
3 kW 65 V Light Weight PWM Power Supply
Ralph Crumrine, N0KC
March/April
HM-133 Microphone DTMF Adapter Project
Joseph M. Haas, KEØFF
March/April
Collection of Broadband HF Antennas Designs-Part-1
Jacek Pawlowski, SP3L
Additional Resources May/June A Simple 122-GHz Transverter Andrew J. Anderson, VK3CV/WQ1S Additional Resources July/August The FT4 and FT8 Communication Protocols Franke, Somerville, and Taylor Additional Resources September/October The H40TT "Suitcase" Vertical Antennas for 160 m to 17 m Bands
Grant Saviers, KZ1W, and Robert Fanfant, N7QT Additional Resources November/December Remote Operating with a Raspberry Pi, Fldigi/Flrig, WSJT-X, and NoMachine Harry Bloomberg, W3YJ -
Content Issue Title Author Source Code January/February Reflow Pi Kohler Additional Information January/February Baseband Quadrature Multiband Modulator Van Slyke Additional Information January/February The Ultimate Keyer Collins Software January/February Wide Range Field Strength Meter and The Ultimate Keyer Alldread/Collins Software March/April Reflow Soldering for the Radio Amateur - Revisited Koehler Software March/April Baseband Quadrature Multi-Band Modulator Van Slyke Software May/June An Unusual Multi-Band WSPR Transmitter Steber Software May/June Measure Crystal Parameters Using a Vector Impedance Meter Koehler SCAD Files July/August Get Started with 3D Printing Pingree T-Network Calculator July/August Tech Notes Whitney/Stensby Schematics July/August Themis Westmoreland Source Link July/August Themis Westmoreland Diagrams and More November/December An Engineering Tool for Simulating Receiver
PerformanceAppel Additional Information November/December Building an LDMOS Amplifier with an Arduino Interface Foerster Additional Information November/December RF Workbench Ripingill -
Content Issue Title Author Additional Information March/April Technical Note: Increase Your Resistor Inventory with this Resistor Search Program
Dan Bobczynski KG4HNS Source Code May/June DSP-Based Vector Network Analyzer for 10 Hz to 40 kHz Bob Larkin, W7PUA Source Code July/August An Arduino-based DDS for the Heathkit SB-104 Transceiver Tom Sowden, W6KAN Additional Information July/August Effects Due to Ground For Small Transmitting Loop Antennas Peter DeNeef, AE7PD Additional Information July/August Small Gap-resonated HF Loop Antenna Fed by a Secondary Loop Kai Siwiak, KE4PT and Richard Quick, W4RQ Source Code September/October Simple and Accurate Variable Frequency RF Signal Generator
Elwood Downey, WBØOEW
Source Code November/December Direct Calculation of Antenna Tuner Losses
David Birnbaum, K2LY
Additional Information November/December Ground Resistance Test Set
Jim Satterwhite, K4HJU
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File Name Issue Description Author(s) Additional Resources May/June PCB layout, bill of materials, microcontroller hex code and circuit diagram for the DG5MK IV antenna analyzer.
Michael Knitter, DG5MK Octave Code May/June Octave for Complex Characteristic Impedance Maynard A. Wright, W6PAP Additional Information July/August Experiments with a Broadband, High-Dynamic Range, Low Noise HF Receiver Preamplifier Scott Roleson, KC7CJ Code and More July/August A High Performance 1 MHz to 2.5 GHz
USB Power MeterEuclides Lourenço Chuma, PY2EAJ Documentation September/October Programming the DDS AD9850 Signal Generator
Module with the Texas Instruments MSP430
Launch PadJames L. Kretzschmar, AE7AX Modeling Files November/December RF Exposure Safety Compliance for Three Multi-band Inverted L Antennas Peter DeNeef, AE7PD Documentation November/December Measuring Characteristic Impedance of Coax Cable in the Shack J. Flood, K4DLX -
File Name Issue Description Author(s) Call Sign 1x16_Hershberger.zip January/February External Processing for Controlled Envelope Single Sideband David Hershberger W9GR C++ compression and decompression code January/February Introducing AACTOR: A New Digital Mode Joseph Roby Jr K0JJR 1x16_Adams.zip January/February Python code files for “Crystal Parameter Measurements Simplified” Chuck Adams K7QO 1x16_Cowling_Hands_On_SDR.zip January/February Various files for the Hands On SDR Column Scotty Cowling WA2FDI Extra Files and Information March/April Autonomous Satellite Tracker Elwood Downey WB0OEW Figures and More March/April Compact Top-Band Vertical Yagis Al Christman K3LC Text and Figures March/April Elevation and Pseudo-Brewster Angle Formation of Ground-Mounted Vertical Antennas Robert Zavrel W7SX Data and Additional Information March/April Calculation of FM and AM Noise Signals of Colpitts Oscillators in the Time Domain Dr Ulrich Rhode N1UL Examples and Information May/June SDR Simplified Ray Mack W5IFS Maidenhead-grid-spreadsheet May/June Geodetic and Maidenhead Locator System Conversion Bill Echols NI5F Resources July/August Various files for the Hands-On SDR column Scotty Cowling WA2DFI Files and Additional Information July/August A PLL Based Stand-Alone Signal Generator with I and Q Outputs Charles Templeman W2EHE Additional Image September/October Crystal Test Oscillators Fred Brown W6HPH Sample Data (Excel worksheet) November/December Determination of Soil Electrical Characteristics Using a Low Dipole Rudy Severns N6LF Complete Article November/December How to Tune an L-Network Matchbox Charles R. MacCluer W8MQW Complete Article November/December Gray Line Propagation, or Florida
to Cocos (Keeling) on 80 mEd Callaway N4II -
File Name Issue Description Author(s) Call Sign 11x15_Magliacane.zip 11/2015 This file includes color photos as well as the firmware for the PIC16F88 microcontroller for "A Frequency Standard for Today's WWVB." It also includes the PDF files for Figures 7, 12b, and 13, which had errors in the printed version of this artilce. The PDF file on the web has been corrected. John Magliacane KD2BD 11x15_Downey.zip 11/2015 This file includes the Arduino code for "Using an Arduino to Automatically Tune an MFJ-1788 Magnetic Loop Antenna and Elecraft KX3 Transceiver." Elwood Downey WB0OEW dsp-radio-resources 9/2015 Here is a link to the web site for resources and updates to the "SDR: Simplified" column. Ray Mack W5IFS 9x15_Henaux.zip 9/2015 Color rendition of Figure 16 of "3D Simulation of a Feed Horn for a Parabolic Antenna Using Circular Polarization." J. C. Henaux and others 9x15_Carcia.zip 9/2015 Color photos for "High Power Solid State Broadband Linear Amplifiers." Francis Carcia WA1GFZ 7x15_Marcus.zip 7/2015 Arduino code and circuit board files for "An Arduino Controlled GPS Corrected VFO." Gene Marcus W3PM / GM4YRE 7x15_Severns.zip 7/2015 "Radiation and Ground Loss Resistances in LF, MF and HF Verticals: Part 1" Appendices A, B, C, and D are presented here as Microsoft Word document files for download. Rudy Severns N6LF 5x15_Fernandes.zip 5/2015 HEX Code files and information about circuit boards for "The Tricorder -- A Self-Contained and Integrated 500 MHz RF Signal Generator, Power Meter and Network Analyzer. Rubens R. Fernandes VK5FE 5x15_Mack_SDR.zip 5/2015 C code listings for "SDR: Simplified" Ray Mack W5IFS 5x15_Stephensen-Fig-1.zip 5/2015 A colored map centered on Fresno, CA, showing 70 cm coverage of an orthogonal frequency division multiplexing modem built by John Stephensen. This goes with "TAPR Looks to Advance the Work of John Stephensen, KD6OZH," (SK). Scotty Cowling and Chris Testa WA2DFI and KD2BMH 3x15_Drell 5/2015 This file is the C++ sooftware code listing for the Arduino Uno processor used with "An Experimenter's Variable Voltage Transformer." Ted Drell W5HEU 1x15_Audet.zip 1/2015 Circuit schematic, Excel spreadsheet and other files associated with "A Low Frequency Adapter for your Vector Network Analyzer (VNA)." Jacques Audet VE2AZX 1x15_Mack_SDR 1/2015 Program listings for "SDR: Simplified." Ray Mack W5IFS 1x15_Toledo.zip 1/2015 Schematic and Circuit Board Design files for "A Selective Robust Weak-Signal UHF Front End." Sivan Toledo 4X6IZ -
File Name Issue Description Author(s) Call Sign 11x14_Hershberger 11/2014 Various files, including audio examples, associated with "Controlled Envelope Single Sideband." David Hershberger W9GR 11x14_Wheeler.zip 11/2014 Color photos associated with "New Life for the Motorola MSR-2000 VHF Repeater." Tom Wheeler N0GSG 9x14_Alldread.zip 9/2014 HC05_Bluetooth.ct file associated with "Android Wireless Project Control Part 3." Thomas Alldread VA7TA 7x14_Alldread.zip 7/2014 Source code files associated with "Android Wireless Project Control Part 2." Thomas Alldread VA7TA 7x14_Richardson.zip 7/2014 Various program and Eagle schematic and circuit board files for "An RF Filter Evaluation Tool." Gary Richardson AA7VM 1x14_Ewing.zip 1/2014 Software files associated with "A Software-Based Remote Receiver Solution." Martin Ewing AA6E 1x14_Green.zip 1/2014 This file includes color photos, color graphs and text file for the program code in Figure 6 to accompany "An Extremely Wideband QRP SWR Meter." Dr. Sam Green W0PCE 1x14_Simmons.zip 1/2014 This file includes color photos, ExpressPCB circuit board files and the program code associated with "A Polar Plotting Direction Finder." Bob Simmons WB6EYV 1x14_Wright.zip 1/2014 This file includes the Octave program code listing, "Table_1.m and a ReadMe.txt file to explain how to use it. The files are for "More Octave for SWR." Maynard Wright W6PAP -
File Name Issue Description Author(s) Call Sign 11x13_Clark.zip 11/2013 This file includes the model files described in "Build Amateur Radio Systems Using Scicoslab/Modnum." Jeremy Clark VE3PKC 11x13_Kaune_PIC_Code.zip 11/2013 This file includes both the Assembly code and the HEX code for the PIC processor for "Using GPS to Fine Tune a Rubidium Frequency Standard." Bill Kaune W7IEQ 9x13_Egano_Images.zip 9/2013 Color images for "A Model for Sporadic E: Meteors+Wind Shear+Lorentz Force." Flavio Egano IK3XTV 9x13_McCullers_Images.zip 9/2013 Color images for "Line-of-Sight Signal Path Analysis Using Google Earth." Jim McCullers WA4CWI 9x13_McCullers_Examples.zip 9/2013 Example KML files for "Line-of-Sight Signal Path Analysis Using Google Earth." Jim McCullers WA4CWI 9x13_McCullers_Listings.zip 9/2013 KML program listings for "Line-of-Sight Signal Path Analysis Using Google Earth." Jim McCullers WA4CWI 7x13_Lee.zip 7/2013 Program code and other files for "Motion Based Electrical Power Control." James Lee N1DDK 7x13_simmons.zip 7/2013 PIC assembly code, CAD files and more for "A Two Meter APRS Beacon Transmitter"
Bob Simmons WB6EYV 7x13_Richardson.zip 7/2013 Python logic design files as well as schematic and the board layout files for "Yet Another Frequency Counter for the Experimenter" Gary Richardson AA7VM 7x13_kellock.zip 7/2013 Schematics of the control board and the PLL oscillator for "A Microwave Transverter Controller." Hamish Kellock OH2GAQ 5x13_Jonasson.zip 5/2013 Program code and other files for "Squeeze Every Last Drop Out of the AD8307 Log Amp." Loftur Jonasson TF3LJ / VE2LJX w8zr_power_supply.zip 5/2013 A complete schematic package and a spreadsheet with parts info for all the components on the PCB logic controller for "A Deluxe High Voltage Power Supply." James Garland W8ZR 3x13_Drell.zip 3/2015 This posting is the C++ Arduino Uno processor code for "An Experimenter's Variable Voltage Transformer." The file was incorrectly referenced as 3x13_Drell.zip in that article, so it is posted here for readers who look for it under this file name. Ted Drell W5HEU SDR Simplified 3-2013.zip 3/2013 Software and an Excel speadsheet for "SDR Simplified" Ray Mack W5IFS GerFunc.zip 3/2013 Firmware for the generator described in "A Simple yet Precise Function Generator for the Experimenter" Ruben Fernandes VK5FE ROOS.zip 3/2013 Full size copies of the schematics and other pertinent data for "A Precision DDS for Frequency Measuring Tests" John Roos K6IQL sell.zip 1/2013 Source codes, CAD files and parts list for "Use Arduino Technology to Create a Clock/10 Minute Timer." Clark Sell N9APK 1x13_Wright.zip 1/2013 GNU Octave Code for T- and Pi-Networks (Table 2. The text file "table-2.m" is an Octave script file. Maynard Wright W6PAP -
File Name Issue Description Author(s) Call Sign 11x12_Mack_SDR.zip 11/2012 The C program file for the Fast Fourier Transform (FFT) function described in "SDR Simplified." Ray Mack W5IFS 9x12_Green.zip 9/2012 Software files associated with "A Fully Automated DDS Sweep Generator Measurement System - Take 2." Sam Green W0PCE 9x12_Mack_SDR.zip 9/2012 Program files from "SDR: Simplified" to perform the filter calculations and display the filter response curves. Ray Mack W5IFS 9x12_Prosch.zip 9/2012 GNU Radio Companion Flow Graph and Simulation result (Figures 7 and 8) for "A Minimalist Approximation of the Hilbert Transform." Theodor Prosch DL8PT 7x12_Elmore.zip 7/2012 Color Photos for Figure 8 and other graphics for "A New Antenna Model." Glenn Elmore N6GN 7x12_Toledo.zip 7/2012 Files for "A High-Performance Sound-Card AX.25 Modem." Sivan Toledo 4X6IZ 7x12_Whiteside.zip 7/2012 ExpressPCB files and Meter Template file for "A Linear Scale Milliohm Meter." Steve Whiteside N2PON 7x12_Works.zip 7/2012 Color photos of Figure 8 in "Confirmation Measurements of Vector Potential Waves." George Works
Shelley Works
KJ6VW
KG4SRS
5x12_Mack_SDR.zip 5/2012 The filter design files for the TI TMS320C5535 eZdsp development kit from "SDR: Simplified." Ray Mack W5IFS 5x12_Wright.zip 5/2012 Octave script files, Tables 1 and 2, from "More Octave for L-Networks." Maynard Wright W6PAP 3x12_Hightower.zip 3/2012 Windows USB driver files and Cypress CY8C3866 processor files for "Simple SDR Receiver." Michael Hightower KF6SJ 3x12_Mack_SDR.zip 3/2012 DSP software files for the "SDR: Simplified" column. Ray Mack W5IFS 3x12_Simmons 3/2012 ExpressPCB files and Asembly Language program code files for "A Simple Internet VoIP Board." Bob Simmons WB6EYV 3x12_Traylor.zip 3/2012 Source code files for "An Open Source Keyer with Programmable Control Outputs." Roger Traylor ND7PA 1x12_Audet.zip 1/2012 MathCAD, Adobe PDF and Microsoft Excel files for "Q Factor Measurements on L-C Circuits" Jacques Audet VE2AZX 1x12_Maetta.zip 1/2012 PIC program source files and Eagle circuit board files for "Pic'n on the Thunderbolt" John Maetta N6VMO 1x12_Brown.zip 1/2012 Corrected Figure 3 for "End Man-Made Noise with the Noise Canceller." Fred Brown W6HPH -
File Name Issue Description Author(s) Call Sign 11x11_Apel_Table_3.zip 11/2011 Corrected Table 3 for "A New Horizontal Polarized High Gain Omni-Directional Antenna." Tom Apel K5TRA 11x11_Mack_DSP.zip 11/2011 These are the files for the Texas Instruments TMDX5535EZDSP evaluation board from the SDR: Simplified column. Ray Mack W5IFS 9x11_Wright.zip 9/2011 Octave files from Tables 2, 3, 4 and 5 to run various plots from "Ovtave for Curve Fitting." Maynard Wright W6PAP 7x11_Appel.zip 7/2011 Lowpass Filter Designer software for "Filter Synthesis Using Equal Ripple Optimization." Gary Appel WA0TFB 7x11_Hontoria.zip 7/2011 Exrpess PCB file and color photos for "A 10 MHz to 6 GHz Power Meter." James Hontoria W1JGH 7x11_Johnson.zip 7/2011 Controller source code for "Programmable PLL (Si570) Local Oscillator for HF Receivers, Transmitters and Transceivers." Craig Johnson AA0ZZ 5x11_McDermott.zip 5/2011 The files described in "A Flexible 2-Port Network Calculator Tool." This ZIP file includes an executable file for the tool, a help file, the tool source code and the three example design files described in the article. Tom McDermott N5EG 5x11_Siwiak.zip 5/2011 Supplemental information, including MathCAD files for "An Optimum Height for an Elevated HFAntenna." Kazimierez "Kai" Siwiak KE4PT 5x11_Stephensen.zip 5/2011 The microprocessor source code file for "A Stable Low-Noise VFO for VHF-UHF Transceivers and Transverters." John Stephensen KD6OZH 3x11_Roos.zip 3/2011 "Converting a Vintage 5 MHz Frequency Standard to 10 MHz with a Low Spurious Frequency Doubler" John C. Roos K6IQL 3x11_Wright.zip 3/2011 A Readme.txt file and the Octave program code listed in Table 1 of "Octave for L-Networks." Maynard Wright W6PAP 1x11_Ahlstrom.zip 1/2011 The Eagle circuit board files and the FPGA program files for "An All Digital Transceiver for HF" James Ahlstrom N2ADR 1x11_Paskvan.zip 1/2011 Color photo of a completed feed horn and larger graphs for Figures 2, 3 and 4 for "An All Purpose High Gain Antenna for 2400 MHz." See the Jan 2011 listing of This Month in QEX for a PDF of this complete article, including the last page, which was omitted in the printed version of the article. Roger Paskvan WA0IJU 1x11_AADE_Filter_Design.zip 1/2011 Instructions for installing the Almost All Digital Electronics Filter Design Program, along with the prgram installation file. This program was referenced in "Seventh-Order Unequal-Ripple SVC Low-Pass Filters with Improved Second Harmonic Attenuation." Dave Gordon-Smith G3UUR -
File Name Issue Description Author(s) Call Sign
Nash.zip 11/2010 Collection of files for "An Event per Unit Time Measurement System for Rubidium Frequency Standards." Bob Nash KF6CDO 9x10_Bowman.zip 9/2010 Microsoft Excel spreadsheet created as an alternative to the HP 35s programmable calculator program Michael Bowman KG2MG 7x10_Zimmerman.zip 7/2010 EZNEC model files for "A 20 Meter Sleeve Dipole Without the Sleeve." Robert Zimmerman VE3RKZ 11x09_Steder_Hardcastle.zip 7/2010
11/2009
Crystal ladder filter design program for “Crystal Ladder Filters for All. This file is an updated program file, described in the Jul/Aug 2010 Horst Steder Jack Hardcastle DJ6EV G3JIR 5x10_Bern.zip 5/2010 Program, documentation and other files associated with “A PS/2 Keyer: Using a Keyer Paddle to Emulate a PS/2 Keyboard and Mouse.” David Bern W2LNX 5x10_Fernandes.zip 5/2010 This is the hex program code for the PIC16F876A microcontroller used in”A Frequency Counter for the Experimenter.” Rubens Ramos Fernandes ex-PY2QE 3X10_Harrison_McGwier.zip 3/2010 EZNEC-4 model files for "Design, Construction and Evaluation of the Eight Circle Vertical Array for Low Band Receiving." Joel Harrison
Bob McGwier
W5ZN
N4HY
3x10_Kopski.zip 3/2010 Bob Kopski K3NHI 3x10_Post.zip 3/2010 A Microsoft Excel spreadsheet to calculate oscillator design parameters for "On Maximizing the Tuning Range of SA/NE 602 IC Colpitts Oscillators." John Post KA5GSQ 1/2010
LTSpice simulation files for the Tech Notes article on “Outphasing Modulation of High Efficiency Amplifiers.” This is a follow up article to Mike Hamel’s Sep/Oct 09 article, “Phase Controlled Differential Drive for EER Amplifiers.”
Mike Hamel
David Cripes
WO1U
NM0S
1/2010
Octave script files for “Octave for Bessel Functions.”
Maynard Wright
W6PAP
1/2010
ResistorCAD program file originally described in “Letter” from Juan Monico, VA7IE, in the Sep/Oct 09 issue.
This file was updated 12/7/09 to include a ReadMe.txt file from the author that was missing from the original download file. Thanks to Dave Green, VE3TLY, for bringing this to our attention in a “Letter” in the Jan/Feb 10 issue.
Terry Harris
Vadar Systems
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File Name Issue Description Author(s) Call Sign 11x09_Mack_SDR_Gerber.zip Nov-09 Gerber Circuit Board files for the “SDR: Simplified” column. Ray Mack W5IFS 11x09_Mack_SDR_PDF.zip Nov-09 PDF files of Circuit Board layout for the “SDR: Simplified” column. Ray Mack W5IFS 11x09_Steder-Hardcastle.zip Nov-09 Crystal ladder filter design program for “Crystal Ladder Filters for All." This is an updated file, as described in Jul/Aug 2010 Letters. Horst Steder Jack Hardcastle DJ6EV G3JIR 9x09_Chapman.zip Sep-09 .Program files for “Build a Low Cost Iambic Keyer Richard Chapman KC4IFB 9x09_Miller_PCB.zip Sep-09 Circuit board and front panel CAD files for “Atomic Frequency Reference for your Shack.” Bob Miller KE6F 9x09_Miller_Front.zip 9x09_rescad.zip Sep-09 ResistorCAD program file described in “Letter” from Juan Monico, VA7IE Terry Harris Vadar Systems This file was updated 12/7/09 to include a ReadMe.txt file from the author that was missing from the original download file. 9x09_Steinbaugh.zip Sep-09 Circuit board and parts placement files for Part 4, “A Cybernetic Sinusoidal Synthesizer.” Gary Steinbaugh AF8L 9x09_Zimmerman.zip Sep-09 EZNEC model file for “An Easily Erected 20 Meter Antenna for Emergency Use” Robert Zimmerman VE3RKZ 7x09_Mack_SDR.zip Jul-09 Program files for the “SDR: Simplified” column. Ray Mack W5IFS 3x09_Monroe.zip Mar-09 Various program files for “Some Assembly Required — How to Write a Simple Microcontroller Program.” Roger Monroe K7NTW 3x09_Spencer_Tech_Notes_PCB.zip Mar-09 Tech Notes Column files. The PPT file is a Microsoft PowerPoint file that animates a couple of the propagation reception graphs. Mark Spencer WA8SME 3x09_Spencer_Tech_Notes_asm.zip The PCB file contains top and bottom circuit board files and parts placement overlay. 3x09_Spencer_Tech_Notes_PPT.zip The asm file is the assembly language file for the PIC on the revised SID receiver interface. 3x09_Hubler_Schultz.zip Mar-09 Letters Column. This file is a program to calculate parameters for Frederick Hubler’s Nov/Dec 2008 article, Broadband Impedance Matching. Steven Schultz WB8WGY 5x07_Koehler.zip Mar-09 Letters Column. This file is an updated program file for Jim Koehler’s May/Jun 2007 article, An Automatic Noise Figure Meter James Koehler VE5FP 1x09_SDR_Simplified.zip Jan-09 The software files associated with the “SDR: Simplified” column. (11 KB) Ray Mack W5IFS -
File Name Issue Description Author(s) Call Sign 11/2008
Software files and some color photos associated with “Fully Automated DDS Sweep Generator Measurement System. This file includes software updates provided by the author on 1 Dec 08.
Dr. Sam Green
W0PCE
11/2008
Spice circuit simulation files for “Broadband Impedance Matching, along with a self-executing file with a version of UC Berkeley Spice ver 3f5.
Frederick Hubler
11/2008
EZNEC model file for the five-element 2-m Yagi antenna described in “Offset Matching of Yagi-Uda Beams.”
Robert Zimmerman
VE3RKZ
9/2008
LTSpice circuit simulation files for the circuits of Figures 6 and 7 of “A Great Teacher: The Crystal Set.”
Phil Anderson
W0XI
9/2008
Software files associated with “SID: Study Cycle 24, Don’t Just Use It.”
Mark Spencer
WA8SME
9/2008
PIC program files and Windows Configuration Software files for “The Rechargeable Battery Cycler.”
Bertrand Zauhar
VE2ZAZ
7/2008
EZNEC files for the antennas modeled in the Antenna Options column. This column discusses one wavelength loops.
L. B. Cebik (SK)
This is the final Antenna Options column that we had received from L. B. before his death.
W4RNL
5/2008
EZNEC files for the antennas modeled in the Antenna Options column. This column discusses various types of reflectors.
L. B. Cebik (SK)
It is with the deepest sorrow that we report that L. B. became a Silent Key in April 2008.
W4RNL
5/2008
Software files associated with “An All Digital SSB Exciter for HF.”
James Ahlstrom
N2ADR
5/2008
Firmware and program files associated with “A Software Controlled Radio Preselector.”
Juan Jose de Onate
M0WWA
3/2008
Excel and Quatro Pro format spreadsheets for calculations described in the Antenna Options column. This column discusses impedance matching for beam antennas.
L. B. Cebik
W4RNL
1/2008
EZNEC files for antennas modeled in the Antenna Options column. This column looks at some larger choices for horizontally polarized omnidirectional antennas.
L. B. Cebik
W4RNL
1/2008
Program files and HEX code files for”A Low-Cost, Flexible USB Interface.”
Professor Dr Thomas C. Baier
DG8SAQ
1/2008
Circuit board patterns and parts placement diagrams for “A 2256 MHz PLL Local Oscillator.” Assembly language PIC program file and HEX code files are also included.
Jim Kocsis
WA9PYH
1/2008
Circuit board patterns and parts placement diagrams for “A Squelch Amplifier.”
John Laughlin
KE5KSC
1/2008
Files associated with “The Z100 CW Tuning Aid.”
Jack Smith
K8ZOA
1/2008
Octave script file for “More Octave for Transmission Lines.”
Maynard Wright
W6PAP
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File Name Issue Description Author(s) Call Sign 11/2007
This file is an Adobe PDF file of the index for 2007, Issues 240-245.
Lori Weinberg
KB1EIB
11/2007
EZNEC files for antennas modeled in the Antenna Options column. This column explores some horizontally polarized omnidirectional antennas.
L. B. Cebik
W4RNL
11/2007
Circuit board pattern and HEX program code for “SAN2PC: A Spectrum Analyzer to PC Interface.”
Roland Cordesses
F2DC
11/2007
Various program files and audio files associated with “Program Your Own Voice Keyer/Recorder.”
Steve Gradijan
WB5KIA
9/2007
EZNEC files for the antennas modeled in the Antenna Options column. This column looks at circularly polarized satellite antennas.
L. B. Cebik
W4RNL
9/2007
PIC controller hex program file for “A DDS Based QRSS (and CW) Beacon.”
Matteo Campanella
IZ2EEQ
9/2007
Various Microsoft Excel Spreadsheets and EZNEC data files associated with “Using Gain-Probability Data to Compare Antenna Performances.”
Fred Glenn
K9SO
9/2007
Various program and text files associated with “Turbo Delphi Explorer: Develop Amateur Radio Projects for Windows with a Free Compiler.”
Steve Gradijan
WB5KIA
9/2007
Text file with Table 1, Visual Basic Code Samples from “An Unusual Vector Network Analyzer.”
Dr George R. Steber
WB9LVI
9/2007
Octave script files for the program listings in Tables 1, 2, 4 and 5 from “Octave for Circle Diagrams.”
Maynard A. Wright
W6PAP
7/2007
EZNEC files for the antennas modeled in the Antenna Options column. This column looks at reversible wire beam antennas.
L. B. Cebik
W4RNL
7/2007
MathCAD files used by the author to create graphs for “Voltage-Magnitude Impedance Measurement.”
F. N. Eddy
7/2007
Microsoft Excel spreadsheet example file for three element cubical quad antenna design described in “Microsoft Excel for Antenna Modeling.”
Brian B. Turner
K2SJM
5/2007
EZNEC files for antennas modeled in the Antenna Options column. This column looks at NVIS antennas for special needs.
L. B. Cebik
W4RNL
5/2007
ATMega32 microprocessor source code and HEX object code files for the Automatic Noise-Figure Meter
NOTE: In the Mar/Apr 2009 issue, in the Letters column, the author informed readers that he had discovered an error in the code, and he provided a new file. That new file is the one linked here for download.Jim Koehler
VE5FP
3/2007
Color graphs and original captions for Figures 12, 13, 16, 17 and 18 from “A Low Budget Vector Network Analyzer for AF to UHF.”
Professor Dr Thomas C. Baier
DG8SAQ
3/2007
An assembly guide and an operators guide, along with a printable file to make the project box label for “IsoCat.: USB Transceiver Control and Sound Card Interface.”
William Buoy
N5BIA
1/2007
EZNEC files for antennas modeled in the Antenna Options column. This column looks at various narrowband NVIS antennas.
L. B. Cebik
W4RNL
1/2007
EZNEC file for “All About the Discone Antenna.”
Steve Stearns
K6OIK
1/2007
Octave script file for “Octave for Transmission Lines.”
Maynard Wright
W6PAP
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File Name Issue Description Author(s) Call Sign
7x06Steber.zip 7/2006 Firmware for transistor curve tracer George Steber WB9LVI File Name Issue Description Author(s) Call Sign 11/2006
EZNEC files for antennas modeled in the Antenna Options column. This column explores some options for wire beam antennas. (11 kB)
L. B. Cebik
W4RNL
11/2006
Various program source code files associated with “Command and Control: Talk to Your Radio and Your Radio May Talk Back.” (1.44 MB)
Steve Gradijan
WB5KIA
9/2006
EZNEC files for antennas modeled in the Antenna Options column. This column looks at various horizontal dipole arrays. (5 kB)
L. B. Cebik
W4RNL
9/2006
MathCAD files associated with “Q Calculations of L-C Circuits and Transmission Lines: A Unified Approach.” The Microsoft Excel file “Calc_SeriesRLC.xls” is also included. (1.18 MB)
Jacques Audet
VE2AZX
7/2006
EZNEC files for antennas modeled in the Antenna Options column. This column looks at various vertical dipole arrays. (5 kB)
L. B. Cebik
W4RNL
7/2006
Software files for “I-V Curve Tracing with a PC” and companion July 2006 QST article. (114 kB)
Dr. George Steber
WB9LVI
7/2006
Octave executable model file for “Octave for System Modeling.” Also included are Tables 2 and 3 from the article, with code snippets for other model variations discussed in the text. (2.95 kB)
Maynard Wright
W6PAP
5/2006
EZNEC files for antennas modeled in the Antenna Options column. This column looks at the bandwidth of several Yagi and quad antenna designs. (3.77 kB)
L. B. Cebik
W4RNL
5/2006
Talking Logbook with Rig Control software. This is the software installation file. (1.8 MB)
Steve Gradijan
WB5KIA
5/2006
EZNEC antenna model file for Uniform Current Loop Radiators. (0.5 kB)
Robert K. Zimmerman, Jr.
NP4B
3/2006
EZNEC files for antennas modeled in the Antenna Options column. (1 kB)
L. B. Cebik
W4RNL
3/2006
Controller software source code for "An L-Q Meter." (23 kB)
Jim Koehler
VA7DIJ
3/2006
WINDLOD.EXE and DOC file for "An Analysis of Stress in Guy-Wire Systems (55.5 kB)
William Rynone, PhD, PE
WB2EIQ
1/2006
EZNEC files for antennas modeled in the Antenna Options column. (1.46 kB)
L. B. Cebik
W4RNL
1/2006
Circuit files for PSpice analysis (1.38 MB)
Randy Evans
KJ6PO
1/2006
Two images of the Harmanized R4C receiver (1.58 MB)
Phil Harman, Steve Ireland
VK6APH, VK6VZ
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File Name Issue Description Author(s) Call Sign 11/2005
HP to JEDEC parts cross reference (46 kB)
Frank Carcia
WA1GFZ
9/2005
Software for QRP DDS
David Harrison
W6IBC
9/2005
Software package for “A USB controlled VFO” (506 kB)
Gary Geissinger
WAØSPM
9/2005
Files and program for PC Sound card impedance bridge
Dr George Steber
WB9LVI
5/2005
Figures for “Using The SA605/615 IF Processor IC.”
Dan Doberstein
—
3/2005
PIC software for inexpensive TNC (505 kB)
Bob Ball
WB8WGA
1/2005
1-GHz Waveguide Preamplifier Etching pattern and Harmonica model
Zack Lau
W1VT
1/2005
Excel spreadsheet to design PLLs (128 kB
Randall Evans
KJ6PO
1/2005 "Why antennas radiate" appendix.
"Why antennas radiate" pdf.
Corrections to "Why antennas radiate."
Stuart Downs WY6EE -
File Name Issue Description Author(s) Call Sign Remote Impedance Measurement.zip 7/2004 Improved remote antenna-impedance measurement spreadsheet Ron Barker G4JNH, VK3INH, ex VK2INH VNA.zip 7/2004 Host and target source, schematic for 100 MHz vector network analyzer with USB interface. Tom McDermott
Karl IrelandN5EG 0405GARDNER.ZIP 5/2004 Graphics files of Figs 2-8 Glen Gardner AA8C 0405SIEG.ZIP 5/2004 Code for programming microprocessor Chris Sieg WA3LDI 0405Lichtel.zip 5/2004 USB Firmware Users Guide - Assembly version Dick Lichtel KD4JP 0403MILES.ZIP 3/2004 UHF Microwave synthesizer John Miles KE5FX 0403BUXTON.ZIP 3/2004 GWBasic programs for multiband dipoles Al Buxton W8NX 0403EVANS.ZIP 3/2004 Tapped capacitor matching Randy Evans KJ6PO 0403RF.ZIP 3/2004 1296 MHz signal source Zack Lau W1VT 0311KOPSKI.ZIP 1/2004 Parts placement diagram Bob Kopski K3NHI -
File Name Issue Description Author(s) Call Sign 1103SCARLETT.ZIP 11/2003 Filter tables and bias calcs Jim Scarlett KD7O 0307CICC.ZIP 7/2003 PLD info, graphics, etching patterns Larry Cicchinelli K3PTO 3x09EVANS.ZIP 9/2003 Spreadsheets for ladder filter design Randy Evans KJ6PO 7X03TRASK.ZIP 7/2003 Antenna models Chris Trask K7ZWY 0303LOGS.ZIP 5/2003 Logging files for Palm organizers Paul Wade W1GHZ 0303YOUN.ZIP 3/2003 Worksheet to analyze SDR-1000 Gerald Youngblood AC5OG 0103MORN.ZIP 1/2003 Basic Stamp 2 source and figures Manfred Mornhinweg XQ2FOD -
File Name Issue Description Author(s) Call Sign 1102YOUNGBLOOD.ZIP 11/2002 Demo program source code. Gerald Youngblood AC5OG 0209ERBAUGH.ZIP 9/2002 Borlund Delphi component to control Pegasus. Mark Erbaugh N8ME 0902YOUNGBLOOD.ZIP 9/2002 Visual Basic source to use MS DirectX8 driver. Gerald Youngblood AC5OG 9X02 STEP.ZIP 9/2002 Color versions of article figures. John Stephensen KD6OZH DIGIXCVR.ZIP 7/2002 Excel worksheet for Digital Transceiver Design. James Scarlett KD7O OWA EZS.ZIP 7/2002 EZNEC descriptions for Optimized Wideband Antennas. L. B. Cebik W4RNL 0205EVANS.ZIP 5/2002 Excel worksheet for battery-charger design with TI/Unitrode UC3906 IC. Randy Evans KJ6PO 0302BEST.ZIP 3/2002 EZNEC descriptions for loop and fractal-loop antennas. Steven R. Best VE9SRB 0102HANDELSMAN.ZIP 1/2002 NEC antenna description files for asymmetrical double rectangle antennas. Dan Handelsman N2DT 1X02SAGE.ZIP 1/2002 Color versions of article graphics. Philip Sage KF8JW QUADS.ZIP 1/2002 EZNEC descriptions for "Quads Revisited" series updated for Part 5 R. P. Haviland W4MB -
File Name Issue Description Author(s) Call Sign Quads.zip 11/2000 3/2001 1/2002 EZNEC descriptions for "Quads Revisited" series R. P. Haviland W4MB RF1101.ZIP 11/2001 EZNEC description file for 10-m turnstile antenna Zack Lau W1VT ZANEK1101.ZIP 11/2001 Datasheet for MA4P1250-1072T Pavel Zanek OK1DNZ BARKER0901.ZIP 9/2001 Excel worksheet for remote antenna impedance measurement Ron Barker G4JNH MURPHY0901.ZIP 9/2001 GWBasic files supporting article about coil George Murphy VE3ERP TRAVANTY.ZIP 7/2001 Excel workbook to analyze antenna/tower wind loading Frank Travanty W9JCC ATR2000.ZIP 3/2001 PIC source files for an HF transceiver project John Stephensen KD6OZH OCDFEZ.ZIP 3/2001 EZNEC descriptions of off-center-fed dipole Zack Lau W1VT PTCWAVE.ZIP 3/2001 Audio samples of normal and PTC-encoded voice Doug Smith KF6DX PIC_DAS.ZIP 1/2001 Files and support for PC based data-acquisition system Steve Hageman Peter Bertini -
File Name Issue Description Author(s) Call Sign SCHEMAT.ZIP 12/2000 Schematic bitmap symbols from QST Hints and Kinks Bob Schetgen KU7G THERMIST.ZIP 11/2000 BASIC source for design of thermistor circuits Bill Sabin W0IYH 00RF09.ZIP 9/2000 70-cm band-pass filter and twin-lead dipole feed Zack Lau W1VT NBPF.ZIP 9/2000 Narrow band-pass filters for HF Bill Sabin W0IYH REGENFIG.ZIP 9/2000 Super-regenerative receivers graphics Charles Kitchin N1TEV UHFREM.ZIP 9/2000 87C750 source code for remote keyer, IDer Sam Ulbing N4UAU LPDAPT2.ZIP 7/2000 LPDA antenna description files L. B. Cebik W4RNL PETELOOP.ZIP 7/2000 TI-82 program to analyze PLL loop stability Rick Peterson WA6NUT LPDAPT1.ZIP 5/2000 LPDA antenna description files L. B. Cebik W4RNL 0003N9KS.ZIP 3/2000 QST Author construction template for "A Simple Antenna Flipper" in Hints and Kinks Ken Secora N9KS 0300KOC.ZIP 3/2000 PC patterns and parts list for WEFAX down-converter Jim Kocsis WA9PYH 0001DUNC.ZIP 1/2000 PC patterns and firmware for Scanner Controller Thomas Duncan KG4CUY 0001RF.ZIP 1/2000 ARRL Radio Designer V1.5 balun circuit description Zack Lau W1VT 0100HAGE.ZIP 1/2000 Software for 2-250 MHz Signal Source Steve Hageman LA0999.ZIP 1/2000 Firmware for Logic Analyzer Larry Cicchinelli K3PTO -
File Name Issue Description Author(s) Call Sign 11/1999
Schematic and parts placement for 100-W PA
William Sabin
W0IYH
11/1999
ARD circuit file to model capacitor Q
Zack Lau
W1VT
11/1999
PIC source code to control an MC145158 PLL IC
John Stephensen
KD6OZH
9/1999
EPS files of Figures (see Readme.txt in file)
Paul Wade
W1GHZ
9/1999
Images of part-placement diagrams (dxf and jpg)
Rodney Green
VK7KRG
9/1999
Windows based dopplergram program for DSP56002EVM
Peter Martinez
G3PLX
7/1999
Antenna-description file and radiation-pattern image
Grant Bingeman
KM5KG
7/1999
Filter-construction information
William E. Sabin
W0IYH
7/1999
Sample 3D radiation-pattern plot with QuickBasic 4.5 source
Doug Smith
KF6DX
7/1999
Antenna-description files and pattern images
Robert Zavrel
W7SX
5/1999
Transmission-Line modeling data for Amateur Radio Designer
Zack Lau
W1VT (KH6CP)
7/1997, 1/1999
Source and object code for DDS VFO (7/97) plus source code for temperature compensation via PIC (1/99)
Curtis Pruess
WB2V
1/1999
Tune SSB Automatically
Robert Dick
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File Name Issue Description Author(s) Call Sign 11/1998
A Faster and Better ADC for the DDC-Based Receiver
Peter Traneus Anderson
KC1HR
9/1998
Front-End Design with ARRL Radio Designer: a 23-cm Preamp
John Brown
G3DVV
7/1998
A Continuous Coverage HF VFO
Francesco Morgantini
IK3OIL
7/1998
Multiple-Octave Bidirectional Wire Antennas
Robert Zavrel, Jr
W7SX
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File Name Issue Description Author(s) Call Sign TMATCH.zip 12/1997 Understanding the T-Tuner (C-L-C) Transmatch) William E. Sabin W0IYH VDHL.zip 12/1997 Modern Digital Design for the Radio Amateur John Wiseman KE3QG CLVRSTAT.zip 11/1997 A Software Package for Analyzing CLOVER Channel Statistics Ken Wickwire KB1JY 97QEX09.zip 9/1997 A Simple Synchronous-AM Detector for the DDC-Based Receiver Peter Traneus Anderson KC1HR VE2CV.zip 8/1997 Loops for 80-Meter DX John S. Belrose VE2CV -
File Name Issue Description Author(s) Call Sign 12/1996
Arbitrary Transmission Line Calculator program
Dave Kirby
G8WRB
12/1996
Source/object for ELMER 8051 development system monitor
Anthony Marchese
N2YM
11/1996
Templates to mount RF connectors
Zack Lau
W1VT (KH6CP)
9/1996
PC patterns for 3456-MHz transverter.
Zack Lau
W1VT (KH6CP)
9/1996
Source for DSP-based audio processor
John Forrer
KC7WW
8/1996
Mathcad example transmission-line calculations
William E. Sabin
W0IYH
8/1996
Source for packet CVSD voice on TI DSK
Dirench Dogruoz, Carlos Lopez, Harvind Samra, Brett Weldy
KB0PRP
5/1996
PC patterns for no-tune 144-MHz transverter
Zack Lau
W1VT (KH6CP)
4/1996
Source and object for DDS-based VFO (68HC11)
Don Kirk
WD8DSB
3/1996
BASIC program to generate K values for use with NEC2, (ASCII)
L. B. Cebik
W4RNL
2/1996
Parabolic dish aperture efficiency program (BASIC)
Bob Larkin
W7PUA
2/1996
Mathcad worksheets showing correlation concepts
Jon Bloom
KE3Z
1/1996
Mathcad worksheets for computing range of matching networks.
Zack Lau
W1VT (KH6CP)
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File Name Issue Description Author(s) Call Sign 12/1995
HDL_ANT (version 2.1) (for PCs)
Paul Wade
N1BWT
11/1995
Firmware source code for TM-741/742 module controller
Hugh Duff
VA3TO
11/1995
BASIC for calculating a 3-resonator BC-band-reject filter
Ed Wetherhold
W3NQN
10/1995
Firmware for PIC-based repeater CW IDer
Gary Sutcliff
W9XT
9/1995
Software for capture/display of weather satellite images
Guido Emiliani, Marciano Righini, Giampaolo Rossini
I4GU, I4MY, IW4CSG
7/1995
Yagi Terrain Analysis program
R. Dean Straw
N6BV
3/1995
9600-bit/s packet BER test software.
Jon Bloom
KE3Z
2/1995
Files for DSP system-response measurement
Jon Bloom
KE3Z
1/1995
BASIC source for crystal-filter design procedure
Jacob Makhinson
N6NWP
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File Name
Issue
Description
Author(s)
Call Sign
9/1994- 11/1994
Horn/Dish/Lens microwave antenna design program (for PCs)
Paul Wade
N1BWT
9/1994- 11/1994
HDL_ANT (version 2.0) use HDLANT21.ZIP instead
Paul Wade
N1BWT
11/1994
SPASM21 assembler for PSA sound-card DSP programming
John Forrer
KC7WW
11/1994
Shareware AMTOR/PACTOR using a DSP sound card
John Forrer
KC7WW
11/1994
HF DSP modem source and demo program
John Forrer
KC7WW
10/1994
PC game port A/D source code (C and QBASIC)
Gary Sutcliff
W9XT
9/1994
PCB patterns for 5760-MHz preamp
Zack Lau
W1VT (KH6CP)
8/1994
Tools for programming PSA sound card DSP
John Forrer
KC7WW
8/1994
DSP sound card programming demo
John Forrer
KC7WW
7/1994
PCB patterns for Mode-S downconverter
Zack Lau
W1VT (KH6CP)
4/1994
FORTRAN program to analyze audio phase-shift network
Kevin Schmidt
W9CF
4/1994
CVSD board drivers and test program (source)
Jon Bloom
KE3Z
4/1994
VHF power attenuator design program
Paul Wade
N1BWT
2/1994
Morse ID generator programming utility
Nick Ciarallo
VE2HOT
1/1994
Pascal source for PC frequency counter project
John Nemec
NS6Z
