PREAMPLIFICATORI
23cm
http://www.qsl.net/ik1hgi/atv/preampl.htm
http://www.ik2rji.it/1024%20Autocostruzione.pdf
http://home.iprimus.com.au/toddemslie/bf981-preamps.html
http://www.mikrofale.net/pdf/23cm%20VLNA.pdf
1,5 GHz (GPS)
http://www.cqham.ru/forum/forum.php
2,4GHz (13cm)
http://www.mikrofale.net/pdf/13cm%20LNA.pdf