Geometric altitude is irrelevant. It's only coincidental if they read close to the same. At higher altitudes you'll start seeing significant differences between indicated and geometric altitudes.
Christopher Pryce gave you the correction from pressure to indicated altitude, so it sounds like your encoder is in need of adjustment. In answer to your original question, yes, they are adjustable. That's part of your transponder check that is supposed to be done every 2 years. -Jeff Scott > Sent: Sunday, December 22, 2019 at 8:56 PM > From: "Flesner via KRnet" <krnet@list.krnet.org> > To: krnet@list.krnet.org > Cc: Flesner <fles...@frontier.com> > Subject: Re: KR> transponder / encoder? > > On 12/22/2019 8:42 PM, Jeff Scott via KRnet wrote: > > ATC corrects the pressure altitude to indicated altitude using the local > > barometric pressure; > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > That's the part of the plan I was missing. He (the controller) said I > was showing 3000 +/-. Was he (the system) not correcting or is my > system off that much? I was set to local barometer and altimeter read > 3500 feet. My altimeter always reads within 150+/- feet of the GPS > altitude and always reads very near exact field elevation. > > Larry Flesner > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
