+drtmn Posted December 18, 2003 Share Posted December 18, 2003 I have a ST Map with v 4.06 and when I go to the sat. screen it only shows 8 sometimes 10 sats. that I am getting reception from. I wondered if anyone else has seen this or any thoughts? Should I d/l the newest firmware or should I get a hold of Magellan and send it in? Quote Link to comment
+Rosco Bookbinder Posted December 18, 2003 Share Posted December 18, 2003 Since you only need three sats for a 2D fix and four or more for a 3D I wouldn't worry about it. I track all the time with four maybe five up to 8 or so. I have the same unit. Quote Link to comment
robertlipe Posted December 18, 2003 Share Posted December 18, 2003 What you are seeing is normal and there will be people envious of having a lock on 8. While it's a 12 channel receiver the reality is that you'll rarely have 12 birds visible at any time. I think the only time I've ever seen full strength on all 12 at the same time, I was on a boat with no terrain in sight. Right now, at my desk, my Plat says there are 11 birds that are theoretically vislble from here and it sees 9 of them. The two it can't see are on the eastern horizon and there is a ridge to my east which distorts my horizon so that's pretty typical for me. If you'd like to read up on nerdy Magellan stuff, I've started a collection of it Quote Link to comment
+phantom4099 Posted December 18, 2003 Share Posted December 18, 2003 The last 2 channels are reserved for WAAS sats (even if you have WAAS off), so the most you can recieve from normal satelittes is 10 (but it can list 12 on the sat screen whenever there is 12 or more visable to the unit). Wyatt W. Quote Link to comment
Kerry. Posted December 18, 2003 Share Posted December 18, 2003 (edited) The last 2 channels are reserved for WAAS sats (even if you have WAAS off) "Even with WAAS off" Where did this idea come from? Cheers, Kerry. Edited December 18, 2003 by Kerry. Quote Link to comment
+phantom4099 Posted December 18, 2003 Share Posted December 18, 2003 (edited) It appears (but I am not 100% sure) that WAAS signals are still recieved with a magellan unit even when WAAS is turned off, but the corrections are not applied. It use to never recieve anything above 10 sats, and at one time displayed the SNR on the WAAS page even when turned off. I not sure which firmware it may have changed (I forget which version I tested this on, it could have been any since 2.09). Wyatt W. I will have to do more test with 5.12 since it behaves diffrently that the earlier versions. Edited December 18, 2003 by phantom4099 Quote Link to comment
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