- EQUIPMENT - HOMEBREW & Kits
- Science Workshop - Build your own Spectrum analyzer! Basic kit available with additional modules
- Fox Delta Kits - APRS Tracker, Echolink & Digital Interfaces, LCD Freq Counter, more
- Far Circuits - Custom and pre-made PCB's for homebrew, club projects, and articles from QST, 73 ART, more
- Elecraft - Build your own fully functional HF tranceiver
- Ramsey Electronics - Tons of radio, hobby, and educational kits
- Electro-kits - Lots of schematics and links to all kinds of kits
- Hendricks QRP Kits - QRP Rig kits, accessories, and parts
- Ham EQ - ND2M
- AC6V Kits - List of Ham Radio and Electronic Kit sources
- HobbyTron.com Hobby Store - Radio and electronics kits
- ON6MU's Radio Amateur Site - Hamradio, software, homebrewing, satellites, more!
- HamRef Kit Links - Lots o' links to kits and supplies
- EQUIPMENT - PARTS & Tools
- Evaluecomp - Electronic Components
- Moyer Electronics
- MOUSER - One of the biggest sources to electronic components
- Parts Express
- Parts & Kits - Caps, Filters, Inductors, Magnet wire, more
- RF Parts - An excellent resource for the homebrewer
- Electronic Goldmine - Lots o' stuff
- MPJA Online - Parts, kits, gadgets, tools, connectors, more
- Ocean State Electronics - Parts, kits, components, tools, a must look-see
- REFERENCE & CALCULATION
- CALCULATIONS
- 1001 Electronic Calculators and Converters
- Java-based resonant circuit, transmission line function, antenna, and signal calculators, more
- Calculations, formulas, links
- Calculations, formulas, more
- 4NEC2 - FREE Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns
- EZNEC - The famous antenna analysis software from W7EL. Free "cripple-ware" version available on the ARRL Antenna Handbook CD
- MININEC - A FREE antenna design and analysis program
- A massive collection of online calculators and reference links. Don't miss this one
- REFERENCE
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