no position
Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=2632
Printed Date: 10 May 2024 at 1:13am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: no position
Posted By: Phil_anthropist
Subject: no position
Date Posted: 17 Feb 2024 at 5:54pm
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Do others get No Position messages a lot? I have always gotten them and although the 10.3.1.2 software seems to help, I still see them. In this picture, it's happening on the ground though they happen in the air also. I've never had one happen on an approach, but I suppose one day it will. Posts on this topic seem to be mostly around 2015, ex.: http://forums.avidyne.com/gps-failure-even-with-10-1_topic760_post8229.html?KW=gps+fault+no+position#8229 with discussions of ferrite beads etc. Since this 540 is from before then, I wonder if it might suffer from whatever was improved around that time. This tag says REV 02. Does anyone know what hardware rev is current? Regards, PA   |
Replies:
Posted By: rpostmo
Date Posted: 17 Feb 2024 at 8:21pm
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I installed my 540 in 2015. I've never seen that message. Bob
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Posted By: rolfe_tessem
Date Posted: 18 Feb 2024 at 10:23am
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Likewise, I have one of the earliest units in the field and have never seen this. It seems as though most issues like this boil down to the antenna or feedline. Rolfe
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Posted By: Phil_anthropist
Date Posted: 18 Feb 2024 at 2:13pm
Posted By: Phil_anthropist
Date Posted: 18 Feb 2024 at 2:46pm
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Thanks much for the reports! Hmm. I've tried different variations on the antenna and coax. Do either of you know what hardware revision you have, or the manufacture date? Mine I think is week 46 of 2014 from MFG code in the upper picture. Does anyone know how to interpret the logs? Ex. what is TrackingState? CarrierPhaseNoise? |
Posted By: eallevato
Date Posted: 19 Feb 2024 at 2:06am
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Questions: 1) What kind of plane? 2) What is your #2 COM? 3) When you get a “No Position” message in the air, did you happen to notice if it was after transmitting on 121.xx or 131.xx xx MHz on your #2 COM? 4) Do you have a 121.5 MHz ELT? 5) If you have a 121.5 ELT, how far apart is the ELT antenna from the COM antennae? Gene ------------- Gene |
Posted By: Phil_anthropist
Date Posted: 21 Feb 2024 at 8:16pm
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Hi Gene, 1 PA-24 single Comanche 2 Narco 12D+ digital 3 #2 com is never used for transmitting 4 yes, still have a 121.5 ELT 5 about 6 feet PA
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