Modification of a Goobay 67269 LNB for use in 10 GHz communication satellite reception

This article shows how to modify an inexpensive, commercial off-the-shelf low-noise block downconverter intended to be used for satellite TV to accept an external LO-reference signal. A LNB that has been modified in this manner is suitable for stable and reliable reception of K-band radiocommunications satellites such as QO-100 (Qatar Es'hail 2).