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• 1963: Opaque Projector
• 1960's: Idiot Box
• 1965: Microphone
• 1965: Intercom
• 1966: Crystal Radio
• 1960's: Transistor Experimentation
• 1967-1968: ElectroChemistry
• 1960's/1970's: Resistor Power
• 1968: Shop Class Woodworking
• 1969: Metal Shop hammer, etc.
• spring of 1969: Novice Class Amateur Radio License
• 1969: Ham Shack Bench
• summer of 1969: built first transmitter
• July 29, 1969: first ham radio contact
• August 14, 1969: Advanced Class Amateur Radio License
• 1970: Timeout Box
• 1970's: Transistor/Diode Analyzer
• 1971: Moonshine
• 1971: It's Academic pushbutton/lightbulb system
• 1971: Extra Class Amateur Radio and First Class Radiotelephone Licenses
• 1971: ARC-5 Transmitter
• 1971: Galaxy transceiver accessories
• early 1970's: CMOS electronic keyer
• 1971-1972: FORTRAN/High School
• early 1970's: VHF/UHF gear
• 1972-1973: BASIC at JHU
• 1973: Sonaphone
• 1973: Analog Computer
• 1973: Assembly Language on the PDP-11
• December 19, 1973: Pip-Squeak/Pip-Squawk two meter transceiver
• 1974: ham mobile operation in Chevy Nova
• 1970's: Pong and Spacewar video games
• February 1974: 2-channel voter
• summer of 1974: JHU 4004 System
• 1974: TTL Car Alarm
• 1974: Added scanner to GLB synthesizer
• 1974: Sugarloaf Mountain
• October 1974: Medical device
• 1974-1976: Beat the Reaper game
• February 1975: CMOS Car Alarm
• March 1975: Reprogrammable IDer
• 1975: C and Unix
• 1975: Replicating Digital Synthesizer
• spring of 1975: M6800 and COSMAC
• August 1975: AccuMemory Keyer
• September 1975: Logic Probe
• 1970's: HT-200 and HT-220 conversions
• 1970's: DTMF pads
• 1975: Bay Bridge Walk
• May 1975: Orbit Memory
• summer of 1975: 4004 Repeater Controller
• end of 1975: TV Typewriter II
• 1975/1976: Oscar satellite operation
• February 1976: 73 Magazine publishes my Star Trek Communicator design
• April 1976: 73 Magazine publishes my article on Reprogrammable IDer
• 1976: Frequency Counter/Digital Voltmeter
• November 2, 1976: The MAXI micro is operational
• December 1976: BASIC operational on MAXI micro
• January 1977: Resident assembler and Text Editor operational on MAXI micro
• February 1977: interfaced Friden Justowriter to MAXI micro
• April 19, 1977: get N3IC Amateur Radio callsign
• July 1977: Memory-based operating system including Text Formatter completed for MAXI micro
• September 1977: MET-1 magnetic tape reader
• October 1977: Spacewar game
• November 1977: Constructed 2708 Programmer
• November 1977: 8080 Repeater Controller
• March 1978: first 6800-based CPU board for MAXI micro
• April 1978: Dura Mach 10 Interface
• May 1978: DoppleScAnt
• June 1978: CQ Magazine publishes GLB scanner article
• June 1978: Preakness Balloon race
• September 14, 1978: 07/67 Histogram
• October 1978: Telemetry
• late 1970's: Graduate Work
• February, March, April, May 1979: 73 Magazine publishes my article on 8080 Repeater Controller
• October 1979: CW King
• November 1979: 8085 Repeater Controller
• 1980: Wrote Chapter 27 in Handbook of Software Engineering
• February 1980: 8748/8749/8755/27xx EPROM Programmer board
• April 1980: Byte publishes 2708 Programmer article
• 1980's: Jacob's Ladder
• June 1980 to January 1981: Color Computer
• July 1980: MAXI micro Term
• November 1980: 8085 w/DTMF Repeater Controller
• December 1980: 6802-based CPU board for MAXI micro
• February 1981: Centronics 503 dot matrix printer lower case conversion
• 1981: Message Converter
• October 1981: Upsets in Microprocessor Controllers
• October 1981: join Telesaver and begin design of Telcro I switch
• March 30, 1982: UVC-1 Universal Voice Coupler receives FCC Part 68 approval
• March 1982: begin design of Telcro II switch
• April 1982: 12-path Telcro I switch operational
• August 30, 1982: first Telcro II switch installed (24-path)
• September 22, 1982: first 36-path Telcro II switch installed
• December 6, 1982: first 72-path Telcro II switch installed
• May 1983: Quik Call 2000 autodialer completed
• mid 1983: Began using Radio Shack TRS-80 Model III computer in place of MAXI micro in the office
• 1983: Basement floor tile/paneling
• 1983: Wooden Road Sign
• mid 1983: begin design of Telcro III switch
• October 8, 1983: first 144-path Telcro II switch installed at one time
• October 1983: Telesaver expands to 31 New Plant Court
• 1984: Handbook of Software Engineering published
• 1984: ham mobile operation in Toyota Tercel
• June 1984: Telesaver creates Vistacom
• July 1984: Equal Access test in West Virginia
• August 1984: cut over to System III switch software
• August 1984: cut over to Equal Access Telcro II interface
• September 1984: Telcro III switch operational
• 1985: Vistacom commences search for technology transfer deals
• March 1985: Telesaver long distance resale business sold
• 1986: Began using Radio Shack TRS-80 Model IV computer in place of MAXI micro in home office
• April Fool's Day 1986: patent issued on a Distributed Processing Telephone Switching System
• April 1986: resign from Vistacom
• 1986: incorporate IC Engineering
• 1986-: part-time Lecturer, Electrical and Computer Engineering, The Johns Hopkins University
• 1986: Modem Security Enforcer (MSE-1)
• 1986: Evaluation of Clarion Computer design
• 1986: Firmware for epilator
• 1986: Evaluation of autodialer design
• 1986-1988: retrofit Telcro II switches into Building Concentrators for leasing company
• 1987: Firmware development for government communications switching system
• 1988: design of Remote Test Set (RTS-1) for MetroTel
• October 1989: HP Laserjet IIP
• 1989: initial release of Automated Remote Origination Network Test System (ARONTS)
• 1989: Banknote counter interface
• December 1989: Assembled a 16 MHz 80386SX2 computer with MsDos 3.3
• 1985-1995: Bookshelves
• February 1991: Joined America Online
• 1992: Neutralizer
• 1993: Electronic key debit telephone
• 1993: Water Heater
• 1994: Line Securer
• 1995: Telephony interface for digital network
• 1996: Pressure Tank
• June 1996: Switched to dialup access via Baltimore County Public Library and began webpages
• July 1996: Assembled an AMD 133 MHz 5x86 with Windows 95
• 1997-: Webmaster, IC Engineering and registered domain
• March 1997: Switched to cable internet access
• 1998-: Webmaster, Maryland Libertarian Party
• 1998: Remote Test Set (RTS-2)
• December 1998-: Newsletter Editor, Maryland Libertarian Party
• September 2000: Brother HL1240 laser
• June 2001: Assembled a 750 MHz AMD Duron machine
• March 2002: First Main Birdfeeder
• September 2002: Final Main Birdfeeder
• July 2003: Replaced motherboard on the 750 MHz AMD Duron machine
• 2003: patent application for Lost person notification system
• October 2003: LED Road Sign
• March 2004: Wooden Television Console
• 2004: Final Post Birdfeeder
• 2004: patent application for Three dimensional animated figures
• 2005: Bare Bones Web Database
• February 2005: Theremin
• 2005: University Microcontroller Trainer (UMT-1)
• 2005: Textbook: MICROCONTROLLER LAB, first edition
• 2006: Textbook: MICROCONTROLLER LAB, second edition
• November 2007: Samsung CLP-300 color laser
• April 2008: Brother HL5240 laser
• July 2008: Moved webpages to GoDaddy servers
• summer of 2008: Home doorknobs, etc.
• January 2009 (or was it 2008?): Moved from Windows 98 to Windows XP on 750 MHz AMD Duron machine
• February 2009: Moved from CRT displays to 22" Video 7 LCD monitor
• February 24, 2009: patent issued for Lost person notification system
• March 2009: Electric Tankless Water Heaters
• March 24, 2009: patent issued for Three dimensional animated figures
• July 2009: Basement Doorway Drain
• April 2010: Upgraded system to a 2.8GHz AMD Athlon II X4 630 processor with Windows 7 Professional
• September 2010: Electric Tankless Water Heater Repair
• September 2010: Automatic Well Pump Shutoff
• November 2010: Dishwasher
• February 2012: Wire Recorder audio recovery
• March 2012: Infiniti Car Radio speaker replacement and MP3 input jack
• November 2013: Lazy Boy recliner
• November 2013: Kitchen Sink
• August 2014: Smoked Plexiglas Television Console Shelf
• August 2015: Chimney Cover Repair
• Summer 2015: Digitizing Music
• October 2015: WiFi Thermostat
• December 2015: WiFi Alarms
• December 2015: Security Cameras
• August 2017: Washer/Dryer Wiring
• August 2017: Refrigerator Maintenance
• September 2019: Home Monitor
• September 2021: Marey Electric Tankless Water Heater
• November 2021: Furnace Repair
• January 2022: Restart Security Cameras Daily
• July-October 2023: Lightning Strike Repairs