|
no position |
Post Reply 
|
| Author | |
Phil_anthropist 
Newbie 
Joined: 15 Mar 2014 Location: Massachusetts Status: Offline Points: 17 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: no positionPosted: 17 Feb 2024 at 5:54pm |
|
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   |
|
 |
|
|
rpostmo
Senior Member 
Joined: 20 Jul 2015 Location: North Dakota Status: Offline Points: 157 |
Post Options
Thanks(0)
Quote Reply
Posted: 17 Feb 2024 at 8:21pm |
|
I installed my 540 in 2015. I've never seen that message.
Bob
|
|
|
|
|
rolfe_tessem
Senior Member
Joined: 06 Jan 2012 Location: Massachusetts Status: Offline Points: 183 |
Post Options
Thanks(0)
Quote Reply
Posted: 18 Feb 2024 at 10:23am |
|
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
|
|
|
|
|
Phil_anthropist
Newbie
Joined: 15 Mar 2014 Location: Massachusetts Status: Offline Points: 17 |
Post Options
Thanks(0)
Quote Reply
Posted: 18 Feb 2024 at 2:13pm |
|
|
|
|
|
|
Phil_anthropist
Newbie
Joined: 15 Mar 2014 Location: Massachusetts Status: Offline Points: 17 |
Post Options
Thanks(0)
Quote Reply
Posted: 18 Feb 2024 at 2:46pm |
|
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? |
|
|
|
|
eallevato
Groupie 
Joined: 04 Apr 2018 Location: Northridge, CA Status: Offline Points: 69 |
Post Options
Thanks(0)
Quote Reply
Posted: 19 Feb 2024 at 2:06am |
|
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
|
|
|
|
|
Phil_anthropist
Newbie
Joined: 15 Mar 2014 Location: Massachusetts Status: Offline Points: 17 |
Post Options
Thanks(0)
Quote Reply
Posted: 21 Feb 2024 at 8:16pm |
|
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
|
|
|
|
|
Post Reply
|
|
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options