26
Showerthought: I swapped from generic to proper shielded cable for a GPS antenna run and the noise floor dropped like a rock.
Had a persistent intermittent fault on a Garmin GTN 750 install in a Cessna 182. The GPS signal kept dropping. I first used a standard unshielded Tefzel wire for the antenna run, thinking it was fine for the short distance. After re-running it with a proper RG-400 coaxial cable, the signal stabilized completely. The shielding made all the difference in blocking interference from the aircraft's other systems. Has anyone else had a similar fix with antenna wiring?
1 comments
Log in to join the discussion
Log In1 Comment
nora_dixon1h ago
Always use coax for GPS, learned that the hard way.
2