Amplificatori
Amplificatori lineari per HF
http://www.elecfree.com/electronic/500w-hf-linear-amplifier/
http://wb0nni.dakotamade.com/rfamp2a.html
http://i5uxj-2.cln.it/amp/schemi/schemi.html
http://www.dxzone.com/catalog/Technical_Reference/Amplifiers/HF_Amplifiers/
http://www.ing.unitn.it/~fontana/liexnear.pdf
http://www.xs4all.nl/~pa0fri/Lineairs/Lineairs.htm#I
http://www.astrosurf.com/luxorion/qsl-amplifier-solidstate.htm