Bad Elf and HPRTK

Bad Elf and HPRTK have entered into a relationship to provide United States nationwide DGPS services for GNSS Surveyor customers. As an owner of a GNSS Surveyor, you are entitled to a one year trial subscription for FREE for each receiver you own. Each trial account is entitled to operate one Bad Elf GNSS surveyor with any mobile, tablet or laptop. Note: simultaneous use of your account with more than one receiver at a time is not allowed. 

HPRTK has provided this coverage map that shows where their service is currently supported. DGPS Coverage currently covers 100% of the USA and 20% of Canada.

Get Connected

To get connected, click on the Sign Up button below to create your account. You will receive an email within 24 hours providing your account details and login information. 

Once you have your account information, open the Bad Elf App on iOS and follow the instructions on how to configure your NTRIP client for iOS.

Android users, please click on the link for DGPS Configration with a Bad Elf on Android


For general questions and technical support for our Bad Elf GPS receiver, please contact us directly via email at

For all questions related to your HPRTK subscription please use the contact information listed below:



HPRTK provides a mobile application you can use to view the status of their network and manage your account. Please click on one of the links below to be directed to the appropriate app store.

Note, The HPRTK app is not required to support any of the functionality of your DGPS service or the Bad Elf receiver.

HPRTK App for iOSHPRTK Android App

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