Data usage with NTRIP

[steveR]

I have just been trying to do some "research" on NTRIP data requirement... Can find bugger all!

How much data/ hour does a Rover Receiver use when using NTRIP for correction? I am wondering what sort of PAYG card would be suitable for modest use of 7-10 days/month?

 

[PJ Walker @ RTK Farming]

The SIM cards we supply with the RTKF Net signal have 1GB a month for agricultural use. Ntrip data packets are very small and this amount would cover you for 5 times that at least.
So a very reasonable PAYG would work fine for you. Just need a reliable network for your area.

 

[Northern farmer]

My base sends about 3 kibit/s. Some that support more constellations may send a bit more.

I pay 10 Euros per year for the data transfer (the minimum payment to keep the PAYG card live).

 

[steveR]

The SIM cards we supply with the RTKF Net signal have 1GB a month for agricultural use. Ntrip data packets are very small and this amount would cover you for 5 times that at least.
So a very reasonable PAYG would work fine for you. Just need a reliable network for your area.

Perfect, thank you for that PJ. Found a data SIM with 500mb/month for £1.50/month. EE.

Reliable networks are more of a problem in my area, but can be managed.

 

[steveR]

My base sends about 3 kibit/s. Some that support more constellations may send a bit more.

I pay 10 Euros per year for the data transfer (the minimum payment to keep the PAYG card live).

Peanuts then...

 

[clbarclay]

Working 24/7, a four constellation base can put out just over 1 gig a month.

Not sure I know any farmers that have actually put over 700 hrs on a tractor in a month.

 

[steveR]

Working 24/7, a four constellation base can put out just over 1 gig a month.

Not sure I know any farmers that have actually put over 700 hrs on a tractor in a month.

I am sure there will be some claiming that....

 

[v12cat]

My base sends about 3 kibit/s. Some that support more constellations may send a bit more.

I pay 10 Euros per year for the data transfer (the minimum payment to keep the PAYG card live).

I'm right in thinking that my own caster sends no data out unless I am actually connected to it?

Obviously using RTK2Go or similar will have constant data transfer.

 

[PJ Walker @ RTK Farming]

I'm right in thinking that my own caster sends no data out unless I am actually connected to it?

Obviously using RTK2Go or similar will have constant data transfer.

That's right. If you have your own Caster data is only used during the connection. When connected to a server there will be much higher data usage as its connected all the time.

 

[clbarclay]

Just tried my f9p base with ###7 messages instead of ###4 messages, for all four constellations. Extrapolating the data sent to rkt2go over the few hours it was up, it could send just over 2 GB running constantly for 31 days.

I doubt that will be an issue for me on the rovers, but would probably be worth setting up your own caster if the base was sending out data via a sim instead of landline. Also perhaps just reducing the number of constellations being used.

 

[steveR]

Just tried my f9p base with ###7 messages instead of ###4 messages, for all four constellations. Extrapolating the data sent to rkt2go over the few hours it was up, it could send just over 2 GB running constantly for 31 days.

I doubt that will be an issue for me on the rovers, but would probably be worth setting up your own caster if the base was sending out data via a sim instead of landline. Also perhaps just reducing the number of constellations being used.

Interesting.

Out of interest, what real benefit can you see in daily usage, if any, of receiving data from all 4 constellations in a farming situation, as opposed to say, 2 constellations?

 

[PJ Walker @ RTK Farming]

If your rover can receive all 4 constellations then you will have greater reliability of satellite signal. More satellites means you are more likely to hold onto signal by trees and in valleys etc. It depends on your location and times of day etc.. If you have your own base you can test whether just running gps and Glonass will work for you or whether you need to run all 4 in the long term. As a RTK provider we run all 4 as our aim is reliability of signal.

 

[steveR]

If your rover can receive all 4 constellations then you will have greater reliability of satellite signal. More satellites means you are more likely to hold onto signal by trees and in valleys etc. It depends on your location and times of day etc.. If you have your own base you can test whether just running gps and Glonass will work for you or whether you need to run all 4 in the long term. As a RTK provider we run all 4 as our aim is reliability of signal.

Thank you, so a quantifiable increase in reliability.

I had assumed that more birds means more chances of locking onto several at one time and that this should improve matters, but you know what they say about assumptions!! .

I find the HV power lines to be a PITA and see accuracy drift quickly with non RTK... Be interested to see if multiple constellation reception helps out here.