Įvairios schemos, teorija, žinynai ir programos:

• www.elektronika.lt
• http://wiredworld.tripod.com/tronics.html#proj
• www.quasarelectronics.com/
• www.electronics-lab.com/projects/index.html
• www.zpcir.ict.pwr.wroc.pl/~jarekp/proj/indexe.html
• www.spelektroniikka.fi/rfirkytkis.htm#fmrx
• www3.telus.net/chemelec/Projects/Projects.htm
• www.uoguelph.ca/~antoon/circ/circuits.htm
• www.commlinx.com.au/schematics.htm