Welcome DJI Spark Pilot!
Jump in and join our free Spark community today!
Sign up

Enough sats locked?

twickers14

Well-Known Member
Join
Sep 6, 2018
Messages
801
Age
75
Am getting impatient to fly, it’s been a week or so and UAV is saying Not Safe, only 9.4/11.2 locked up there in the next 3 hours. What is the safe minimum I can go with? I know I can set the minimum target on the site but advice would be very welcome
 

Spark 317

Well-Known Member
Premium Pilot
Join
Jul 10, 2017
Messages
3,777
Loc
Indiana, USA
The Spark needs at least 10 satilites to get a Home Point lock. More is better.
And you should receive more satilites as you rise up higher in the sky and capture more signals, but ONLY after a Home Point has been established.

The are three phases of the Spark warm up, Atti-mode, GPS, and GPS Ready to go (Home Point).

If the Spark is satisfied with a Home Point, so am I.

I'd set the UAV Forecast app to 10 satilites and see if that works for you. You can set other parameters too to your liking such as wind speeds at 200 feet verses the ground.

Happy flying. :)
 
  • Like
Reactions: Highflyer and Andro

twickers14

Well-Known Member
Join
Sep 6, 2018
Messages
801
Age
75
The Spark needs at least 10 satilites to get a Home Point lock. More is better.
And you should receive more satilites as you rise up higher in the sky and capture more signals, but ONLY after a Home Point has been established.

The are three phases of the Spark warm up, Atti-mode, GPS, and GPS Ready to go (Home Point).

If the Spark is satisfied with a Home Point, so am I.

I'd set the UAV Forecast app to 10 satilites and see if that works for you. You can set other parameters too to your liking such as wind speeds at 200 feet verses the ground.

Happy flying. :)
As always sage advice-good thought on wind speed at height. Many thanks.
 

twickers14

Well-Known Member
Join
Sep 6, 2018
Messages
801
Age
75
Got up at last and perfect. Bit windy but such fun. Flights 162/3 so really happy. Suddenly realised a Mavic flying up with me. Could see the pilot but had to pack up and go so didn’t get to chat. First time I’ve had this happen. 20 sats when up at 200ft. Excellent.
 

nilanjan118

Well-Known Member
Join
Oct 31, 2018
Messages
941
Loc
Japan
I never blindly trust the "satellites locked" shown in UAV forecast. I have found on a number of occasions that even when it shows a forecast of less than 10 satellites, the Spark is actually able to catch a few more. So no harm in just turning on the Spark and seeing how many satellites are locked on the Go4 app instead of relying on some other app's forecast.
 

twickers14

Well-Known Member
Join
Sep 6, 2018
Messages
801
Age
75
I never blindly trust the "satellites locked" shown in UAV forecast. I have found on a number of occasions that even when it shows a forecast of less than 10 satellites, the Spark is actually able to catch a few more. So no harm in just turning on the Spark and seeing how many satellites are locked on the Go4 app instead of relying on some other app's forecast.
Thanks nilanjan118 makes a lot of sense. When I flew (see above) there were “officially” 11 sats but on the flight, up to 16. I just kept an eye on the flight data as I flew.
 
  • Like
Reactions: nilanjan118

nilanjan118

Well-Known Member
Join
Oct 31, 2018
Messages
941
Loc
Japan
Thanks nilanjan118 makes a lot of sense. When I flew (see above) there were “officially” 11 sats but on the flight, up to 16. I just kept an eye on the flight data as I flew.
You are welcome. And like you said and also what Spark317 explained before, the no. of satellites locked usually gets better as we gain altitude. Sometimes it does take a while to get enough satellites or Ready to Go GPS before takeoff but till date I have never had to remain on the ground due to insufficient number of satellites. It is also worth mentioning that once I complete flying with one battery and switch to the next battery, I see that the Spark is able to find the GPS satellites even faster.
 

twickers14

Well-Known Member
Join
Sep 6, 2018
Messages
801
Age
75
You are welcome. And like you said and also what Spark317 explained before, the no. of satellites locked usually gets better as we gain altitude. Sometimes it does take a while to get enough satellites or Ready to Go GPS before takeoff but till date I have never had to remain on the ground due to insufficient number of satellites. It is also worth mentioning that once I complete flying with one battery and switch to the next battery, I see that the Spark is able to find the GPS satellites even faster.
Thanks again for this extra info. Always very helpful. Will put it to a test next time UAV says not enough satellites
 

SaigonDude

Well-Known Member
Join
May 3, 2019
Messages
49
Age
51
Thanks again for this extra info. Always very helpful. Will put it to a test next time UAV says not enough satellites
UAV is a wonderful app, but there are many variables. I fly often when UAV says no-go. But with a Spark, flying in a new location...I ALWAYS recalibrate the compass. I wait for 8 satellites, but in CLEAR conditions, I sometimes will MANUALLY lift off in ATTI mode, go up ~10m and hover. That normally will kick me into GPS, and HP will be recorded.

IME, the #1 loss of AC is impatiently taking off before the Spark is ready.
 
  • Like
Reactions: Vilco

SaigonDude

Well-Known Member
Join
May 3, 2019
Messages
49
Age
51
IMHO, every operator should remember ACs are far from being perfect navigational instruments.

Find a wide open and large area, with no obstacles, on a CLEAR day. Take a spin in ATTI mode. It will improve your confidence, and flying skills.m

It will also lesson operators’ tendency to panic when it just happens. I have an old, original P2 that I’ll fly now and then. I still feel gutshot when it decides to do its own thing.
 

twickers14

Well-Known Member
Join
Sep 6, 2018
Messages
801
Age
75
I don’t get to fly in new locations very much. The Downs here in Bristol UK is a “wide open space” and I have never tried ATTI only. I’m a OTG disciple. When I took Spark to the States in May I was not prompted to Recalibrate and flew safely and accurately much to my surprise!! So I shall carry on wizzing here and there on the Downs but shall be constantly wary of any blips in sat nos. Thank you all for your considered advice. We are very lucky to have this facility.
 

New Threads

Members online

Forum statistics

Threads
11,856
Messages
98,971
Members
15,668
Latest member
MickDoesStuff