Norman,
The information you provided isn't correct unless you are referring to the DA1 version. The DA2 supports both cellular and Satellite based subscription's.
https://community.trimble.com/blogs/mathias-roehring1/2021/09/21/trimble-catalyst-faqs
Where can Trimble Catalyst be used?
GNSS positioning uses signals coming from space and Trimble Catalyst has to be used outdoors. High-accuracy GNSS systems like Catalyst use a technology called differential corrections to correct position errors in real-time while you work, so there must also be a way for the Catalyst receiver to access this correction data in the field. All Catalyst subscriptions include free access to both Trimble VRS Now and Trimble RTX correction services via the Trimble Corrections Hub (TCH). These Trimble correction services can be delivered via satellite (RTX only) or via a mobile internet connection (both RTX and VRS Now). Catalyst also allows the use of custom local correction services via mobile internet. Using cellular data or data roaming may incur additional charges from your cellular service provider. Check regional Trimble VRSNow and Trimble RTX coverage areas, or talk to your local Trimble distributor about local GNSS corrections options in your region.
Can Trimble Catalyst work offline?
Yes. An internet connection is required to download the Catalyst license file for your subscription before using the service for the first time, but once you have a license Catalyst can be used offline for up to 30 days, or until your license expires, whichever comes first. If you are using the Catalyst On Demand service, you need to be online to draw down and start a session on your device.
Catalyst GNSS performance is typically faster to converge in online conditions where corrections can be delivered over the internet connection of the connected phone or tablet with a higher bandwidth data connection than when using satellite-delivered corrections. In offline conditions, Catalyst will use corrections from the Trimble RTX service via satellite broadcast. Satellite broadcast RTX also requires line-of-site between the RTX satellite and the Catalyst antenna.
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Mel Philbrook
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Original Message:
Sent: 03-14-2022 13:38
From: Norman Smart
Subject: Third Party Apps
Hi Bob
Before you buy the "£100 batch of 10 hours of corrections", you'd be advised to ask about expiry dates - it's fine to buy this package as long as you are sure you will use all or most of the hours before they expire but rather annoying if you buy a £100 then only use half the hours. Also check whether you need an internet connection to start one of your contract correction hours - if you are working somewhere that you don't have cellular coverage this could get messy.
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Norman Smart
Original Message:
Sent: 03-12-2022 09:18
From: Robert Williams
Subject: Third Party Apps
Hi Zach
Thanks for the reply.
I bought the Catalyst because we do geophysics and I want to plot the grid corners. Overall it will not be used a lot so £100 batch of 10 hours of corrections will be good for us.
Would you know if it is possible to use the DA1 antenna with another receiver or is it specially made for the Catalyst.
Thanks again for the info.
Bob
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Robert Williams
Original Message:
Sent: 03-12-2022 08:58
From: Zach Edwards
Subject: Third Party Apps
Robert, you would need to pay for the decimeter or precision subscription depending on your accuracy needs. Keep in mind that this hardware is by far the cheapest solution out there for the money! If you wanted to connect directly to ntrip, then you would have to step up to an R2. Depending on where you are working, you can just pay for the subscription and skip the ntrip connection. Just get corrections over RTX satellite via the Trimble corrections hub.
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Zach Edwards
Original Message:
Sent: 03-11-2022 03:28
From: Robert Williams
Subject: Third Party Apps
Hi AllThis is my first post.
I run a small Archaeology Group with very little money to carry out our free Geophysical surveys.
I have a Catalyst DA1 and would like to connect to an ENTRIP server that is local to me. I bought the machine from Korec and they say to configure to the NTRIP server I must pay a subscription to the Hub before I can do this. To me this is Trimble's way of making sure you pay money to them before you can use the free ENTRIP server.
Does anyone know a way around this issue. For example could I use a 3rd party app?
Any help would be appreciated.
Bob
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Robert Williams
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