The transmitter is what dies if the antenna is either missing or badly mismatched.
On Mon, Jul 9, 2012 at 11:06 AM, Mark Langford <m...@n56ml.com> wrote: > Mike wrote: > > >>My occasional jumpy readings are due to a dirty transponder antenna just > as I thought. It's right in the line of exhaust and picks up a film of > grease over a period of hours - just like the bottom of my fuselage under > the wing. << > > Another aspect of a dirty transponder antenna is that the capacitance of > the > housing changes when it's coated with oil. A very sharp electrical > engineer > I know, who's also an A&P and does pitot/transponder calibrations for local > pilots, says it can damage the transponder transmitter or receiver (I > forget > which) if it gets significant enough due to reflected power impulses. He's > the guy that told me that mine croaked because the power lead had become > disconnected and the 200W pulse had no place to go. It was an expensive > lesson... > > Mark Langford > ML at N56ML.com > see experimental N56ML at www.N56ML.com > > > > > _______________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > -- David, kb0zke Rev. 2:10c
