# Connecting Trimble R8S rover (with base station) to android device with qfield **URL:** \ **Category:** Ask the Community\ **Tags:** gh-import\ **Created:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860 "2025-05-14T03:07:28Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/1 "2025-05-14T03:07:28Z")
I’m would like to know if it’s possible to use qfield with a trimble R8S rover in rtk mode (connected to a base module on a known position with radio) and how would that work? So here is the plan : - connect the mobile rover to the base station with the trimble controller using bluetooth connection and the radio signal. - disconnect the bluetooth connection from the trimble controller to the trimble mobile rover. - connect the android device directly to the trimble rover with bluetooth? Use lefebure ntrip client in mock location? - setup qfield to use mock location app? Please let me know if that would work? thanks a lot! * * * _Imported from [GitHub discussion](https://github.com/opengisch/qfield/discussions/2495) by @dukytony on 2022-02-07T12:44:15Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/2 "2025-05-14T03:07:29Z")
dukytony In the past, i used a Trimble R1 through the Trimble Mobile Manager app which is then used as the Mook location. Procedure shouldn’t be much different with the R8S. Regards Nelson * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-2149991) by @geomondego on 2022-02-10T14:22:09Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/3 "2025-05-14T03:07:31Z")
So you’re not using the lefebure app? * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-2151149) by @dukytony on 2022-02-10T16:44:27Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/4 "2025-05-14T03:07:32Z")
Just the Trimble Mobile Manager [https://play.google.com/store/apps/details?id=com.trimble.trimblemobilemanager&hl=pt\_PT&gl=US](https://play.google.com/store/apps/details?id=com.trimble.trimblemobilemanager&hl=pt_PT&gl=US) This app allow you to use NTRIP connection. Nelson * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-2151384) by @geomondego on 2022-02-10T17:04:53Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/5 "2025-05-14T03:07:35Z")
You should use lefebure, TMM is o.k. but i couldn’t manage to get orthometric height in Qfield with R8s. Lefebure has option which let you choose which height will use for mock location orthometric or ellipsoidal. * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-2152180) by @om1s186 on 2022-02-10T19:00:18Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/6 "2025-05-14T03:07:36Z")
Okay and this works with another module as base station (post-processed known location point)? I mean not using NTRIP corrections? * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-2152562) by @dukytony on 2022-02-10T20:09:02Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/7 "2025-05-14T03:07:38Z")
What are you using as base station? For example R12 can enable NTRIP caster for NTRIP stream that can be used by Lefebure. * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-2526729) by @om1s186 on 2022-04-07T21:11:08Z_ ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex018/uploads/qfield/original/1X/7d3726da0ef5099a1e135505c03d2f125d527aae.png) [@system](https://community.qfield.org/u/system)\ **Post date:** [14 May 2025 03:07 UTC](https://community.qfield.org/t/connecting-trimble-r8s-rover-with-base-station-to-android-device-with-qfield/860/8 "2025-05-14T03:07:39Z")
I’m usually using R2 as rover and R8S as base station on a known point. What I’m wondering is : I will need to use the bluetooth connexion of the controller TDC600 to launch the base station through trimble access. Then I ll need to use trimble access to connect the rover to the base station by radio (tdl450). Then what do i do? should I install lefebure and qfield directly on the controller? then launch lefebure and it will receive nmea stream from the rover through bluetooth? Is there a way to be able to do this but from another android device (smartphone or tablet?). I dont think the R8S as a built in ntrip caster. * * * _Imported from [GitHub comment](https://github.com/opengisch/QField/discussions/2495#discussioncomment-3162343) by @dukytony on 2022-07-16T14:33:32Z_