mimichris

In fact, apart from the lower consumption and the Beidou system in addition, it is not much new compared to the 66sr, moreover on GPSArchiv, the 67 has major problems of youth, Garmin has never managed to come out a GPS without any bug, which is a shame, Garmin has been manufacturing GPS for decades and must know how to make a GPS without any problem. The new version 4.70 of the firmware does not bring anything more and does not correct any error visible by the owners of 67. Those which bought some on GPSArchiv have a 66sr and can make comparisons, for the moment they prefer their 66sr.

GPSMAP 66sr Firmware Update 5.70 released 10FEB23: Changes made from version 5.50 to 5.70: Fixed possible issue when attempting to navigate courses. Fixed possible issue with searching for waypoints near a city. Fixed missing/expired CPE status using Wi-Fi. Fixed potential issues with acquiring a GPS fix using Multi-GNSS. Fixed possible shutdown when saving activities from the map page.

It is certainly not the Broadcom chip which is on the 66sr, I had read on a website that it was the Sony chip mentioned above but I did not have the confirmation, Garmin does not give the source of its components, it seems that Garmin chooses and sorts the best satellites on these multi-band GPS because I should have more satellites including the Galileo, on my MI9 smartphone, I have at least 25 to 30 satellites taken into account, including a certain number of L5s. There will soon be two more Galileo satellites that were sent into space on December 2nd. Still, the trace recorded with a 66sr is not much better than the ones I recorded on my old non-multiband 66s. I sometimes have significant deviations from the path or the road on which I am, without any trees and with a completely clear sky.

Glonass is only in single frequency L1. Maybe one day..... I notice that few GPS satellites are L5, I don't know if all the GPS satellites are equipped to have the L5, but it is little compared to Galileo whose all the satellites are L5, it must be them which give the best precision from 66sr. There is no SBAS on the Garmin 65s and 66sr multi-band, but the Sony chips used according to (according to information from the web) this website (https://www.sony.com/en / SonyInfo / News / Press / 202008 / 20-069E /) used behaves after it is an internal firmware setting and 66sr. With older firmware versions 3.80 and lower, Galileo satellites still flashed even after several hours of operation, but that did not prevent them from being factored into the accuracy of the 66sr (see RINEX file).

After this test, did you try to turn off the 66sr and then turn it on again to see if the lost satellites returned normally?

L'entête du 66sr version 3.80 quand Galileo clignotait sans arrêt : 3.04 OBSERVATION DATA M (MIXED) RINEX VERSION / TYPE RINEXWRITER GARMIN 20210801 070212 UTC PGM / RUN BY / DATE Download navigation file using this link: COMMENT ftp://cddis.gsfc.nasa.gov/gnss/data/daily/2021/213/21p/ COMMENT BRDC00IGS_R_20212130000_01D_MN.rnx.gz COMMENT GARMIN MARKER MARKER NAME MARKER NUMBER MARKER TYPE OBSERVER / AGENCY GPSMAP 66sr 3.80 REC # / TYPE / VERS ANT # / TYPE 4625390.0000 271702.4688 4368679.0000 APPROX POSITION XYZ 0.0000 0.0000 0.0000 ANTENNA: DELTA H/E/N G 8 C1C L1C D1C S1C C5X L5X D5X S5X SYS / # / OBS TYPES R 4 C1C L1C D1C S1C SYS / # / OBS TYPES E 8 C1Z L1Z D1Z S1Z C5X L5X D5X S5X SYS / # / OBS TYPES C 4 C1X L1X D1X S1X SYS / # / OBS TYPES J 8 C1C L1C D1C S1C C5X L5X D5X S5X SYS / # / OBS TYPES I 4 C5A L5A D5A S5A SYS / # / OBS TYPES 2021 8 1 7 2 12.000000 TIME OF FIRST OBS G SYS / PHASE SHIFT R SYS / PHASE SHIFT E SYS / PHASE SHIFT C SYS / PHASE SHIFT J SYS / PHASE SHIFT I SYS / PHASE SHIFT 0 GLONASS SLOT / FRQ # C1C 0.000 C1P 0.000 C2C 0.000 C2P 0.000 GLONASS COD/PHS/BIS END OF HEADER

3.04 OBSERVATION DATA M (MIXED) RINEX VERSION / TYPE RINEXWRITER GARMIN 20211125 125336 UTC PGM / RUN BY / DATE Download navigation file using this link: COMMENT ftp://cddis.gsfc.nasa.gov/gnss/data/daily/2021/329/21p/ COMMENT BRDC00IGS_R_20213290000_01D_MN.rnx.gz COMMENT GARMIN MARKER MARKER NAME MARKER NUMBER MARKER TYPE OBSERVER / AGENCY GPSMAP 66sr 4.90 REC # / TYPE / VERS ANT # / TYPE 4625390.0000 271704.1562 4368683.0000 APPROX POSITION XYZ 0.0000 0.0000 0.0000 ANTENNA: DELTA H/E/N G 8 C1C L1C D1C S1C C5X L5X D5X S5X SYS / # / OBS TYPES R 4 C1C L1C D1C S1C SYS / # / OBS TYPES E 8 C1Z L1Z D1Z S1Z C5X L5X D5X S5X SYS / # / OBS TYPES C 4 C1X L1X D1X S1X SYS / # / OBS TYPES J 8 C1C L1C D1C S1C C5X L5X D5X S5X SYS / # / OBS TYPES I 4 C5A L5A D5A S5A SYS / # / OBS TYPES 2021 11 25 12 53 36.000000 TIME OF FIRST OBS G SYS / PHASE SHIFT R SYS / PHASE SHIFT E SYS / PHASE SHIFT C SYS / PHASE SHIFT J SYS / PHASE SHIFT I SYS / PHASE SHIFT 0 GLONASS SLOT / FRQ # C1C 0.000 C1P 0.000 C2C 0.000 C2P 0.000 GLONASS COD/PHS/BIS END OF HEADER

After having found RINEX files of my 66sr dating from August 2021, a month after its purchase, so firmware version 3.30, the Galileo satellites were flashing all the time and I was convinced that they were not taken into account in the precision du 66sr, well I made a mistake thanks to the RINEX files which prove that the Galileo satellites despite the blinking were indeed active. See image below: ALL Satellites and L5 satellites.

Hello, I can't seem to use Net_Diff to output a graph with the RINEX created by my 66sr, how do you do it, I'm not sharp enough on the subject, thanks. Regarding the cutting of satellites other than the GPS after 14 hours of operation, is it due to the energy saving of the GPS which would stop the satellites not essential to operation? EDIT : I managed to create this table with RTKplot.exe. Thank you.

Hello, The new firmware version 4.90 of the Gpsmap66sr corrects the Galileo satellites flashing problem, now, as soon as I turn it on, after a few seconds, all the satellites are present without flashing. Now does that solve all the problems I don't know.

Be careful if you patch your GPS Gpsmap 66sr and 65s you risk having problems with the Galileo satellites which are never active, I experienced it, I had patched my 66sr to be able to read the V6 and the satellites Galileo were never fixed, I even contacted Garmin after-sales service. I decided to put the firmware back 3.80 unpatched and now it works but I will see it on several hikes and several days if it is confirmed. Today : In fact I was a bit quick after putting the unpatched firmware back, today the Galileo satellites are blinking and has nothing to do with the patch.

I sold the 65s and bought a 66sr, I have the exact same problem with the Galileo satellites which blink even after 2 hours of hiking in an open field, if I use it without the multiband it is exactly the same with the satellites Galileo are always flashing, sometimes a single satellite becomes fixed but is of no use since a minimum of three satellites is needed to obtain a position. I will send it back to Garmin under warranty but I doubt because they make the exchange and send a refurbished so an old one. The position suffers I had a 66s and the tracks are not better with the 66sr than the 66s, so the multiband is useless in this case without Galileo.

Hello, I received my 65s yesterday and it's the same the satellites flashing constantly, as if the satellites were not active. I have a friend who has the 66sr it's the same, the satellites are also flashing, the problem is the same, normal or not, Garmin will not be able to tell us.