| How Freq Counters Work (ENG/JAP) | http://www.intio.or.jp/jf10zl/counter.htm |
| Jason Milldrum - NT7S | http://thecabal.home.mindspring.com/nt7s/MP20 |
Mike Hall - WB8ICN |
http://www.qsl.net/wb8icn/MP20%20Project%20Page.htm |
| Andy Meng - N8MX | http://www.qsl.net/n8mx |
| Ed's PLL Page AA3SJ | http://www.qsl.net/aa3sj/Pages/MP20-PLL.html |
| Diz's Page! Original MP Inventor | http://diz.faithweb.com/multipig/ |
| The Multipig Launcher | http://www.gaia-br.com.br/engprodbaixo.htm |
| Andrew's Page - AC7CF | http://www.qsl..net/ac7cf/mp20.html |