[Radio Wrangler]

Cables are two way things. People only tend to think of the direction they want signals to run, but sproggies generated in the tracker can go backwards into the analyser and corrupt its LO signals, giving the analyser sproggies.

Soma analysers have LO outputs specifically for external trackers, others have LO outputs for external mixers. They are often provided with a little terminating resistor load in the appropriate connector, kept nearby with a little chain.

David