http://home.lyse.net/sondre/prosjekter.htm
http://www.publicwarehouse.co.uk/schema ... elated.php
http://www.ajpotts.fsnet.co.uk/Circuits.html
http://www.qsl.net/ta2mbd/elektronik/af.htm
http://www.qsl.net/pg1n/main.htm
http://home.wanadoo.nl/avschaik/schema/hfschema.html
http://www.mouwehand.scarlet.nl/pg1n/zb_hfant.htm
http://www.uoguelph.ca/~antoon/circ/circuits.htm
http://www.zen22142.zen.co.uk/Circuits/rf/rf.html
http://www.satcure-focus.com/cb/page9.htm
http://www.pi4vli.net/Zelfbouw/zelfbouw.htm
http://josklever.dyndns.org/ljtedde/rad ... /index.htm
http://www.pa0fri.geerligs.com/