Kopierat från AMSAT-UK
AMSAT-DL https://amsat-dl.org
GM1SXX http://gm1sxx.blogspot.com/2017/05/more-on-octagon-otlso-pll-lnb.html
G4JNT Tests on a DIGITAL TV LNB for 10GHz narrowband (pdf)
G4JNT Using an external LO Source with the Octagon PLL Low Noise Block (pdf)
G4DDK Twitter www.g4ddk.com/
SM0NCL Blogg för amatörradioprojekt