Browse Free Tools, References, and Utilities
I am a solo attorney, and this site is the web space I maintain for my hobbies and personal technical projects rather than legal content. These apps, tools, datasets, and utilities aren'tt legal advice, and using them does not create an attorney-client relationship. I built them to alleviate problems I have run into myself, and I thought I would put them online to share with others who may find them useful.
Each tool is built as a static HTML page. In practical terms, that means it can run in a normal web browser without requiring a separate app, e-mail address, account, login, or database server. It also keeps my hosting needs modest, which helps me keep these resources freely available.
The factual data used by these tools comes from a range of public and third-party sources. Although I try to present the information accurately and usefully, source data may be incomplete, outdated, or subject to change, so please verify anything important against the original source. The selection, organization, interface design, explanatory text, and overall presentation are my own work. Links are welcome, but please do not scrape, clone, mirror, or republish these pages.
Amateur/Ham Radio
Calculators, reference tools, and searchable directories for antennas, repeaters, transceivers, and vintage radio components.
- Amateur Radio Math Toolkit: Antenna, RF, and Other Calculators
- Vacuum Tube Comparison and Substitution Reference Tool33,906 vacuum tubes
- WT3O's Free Interactive Amateur/GMRS Repeater Directory16,669 repeaters (15,715 amateur and 954 GRMS)
- Ham Radio Transceiver Comparison and Reference Tool950 amateur radio transceivers (desktop, mobile, and portable)
- Ham Radio HT Comparison and Reference Tool708 amateur radio transceivers (HTs)
Turntable Workbench Tools and Utilities
Browser-based utilities designed to help with setup, alignment, measurement, and troubleshooting without installing anything locally.
Lawn Care
A lightweight reference page for region-specific lawn care planning by zip code and turfgrass type.
Audiophile, Turntables, and Vinyl
A broader set of comparison tools, calculators, and lookup pages for turntables, cartridges, styli, phono stages, and related setup decisions.
- Turntable Comparison and Reference Tool1,608 turntable models
- Tonearm Resonance Calculator and Reference ToolChoose from manual calculation or 3,291 cartridges and 117 turntables/tonearms
- Phono Cartridge Comparison and Reference Tool3,350 cartridges
- Phono Pre-Amp Stage and Cartridge Overload Calculator and Reference ToolChoose from manual calculation or 3,350 cartridges and 1,120 pre-amps
- Phono Pre-Amp Stage Comparison and Reference Tool1,120 pre-amp models
- RCA Cable Capacitance Reference Tool
- Phono Cartridge Vertical Tracking Angle (VTA) Shim Calculator
- Phono Stylus/Needle Cross-Reference Tool7,354 cartridges and 6,006 styli/needles
- Vacuum Tube Comparison and Substitution Reference Tool33,906 vacuum tubes
Computers, Networking, and Technology
Small projects that are related to computers, networking, and digital files.
3D Printing
Small practical print projects that support cartridge setup, spacing, and playback accessories.
Nutrition
A small project that examines the effectiveness of multivitamins