Apex, NC

About Me:

Married with two teenagers in high school. Good times.

Please tell us a bit about your UAV interest

Professional Land Surveyor and recreational UAV User hoping to transition into professional uas surveyor.



Activity Feed

Ralph Pendergraph replied to Andrei's discussion 3drobotics - sucks
"Here is my experience with 3DR, hot off the press. I purchased my X8 in December of 2015 because of the great deal I noticed on the 3DR website. Didn't realize they were abandoning the Iris/X8/innovator platforms - they didn't bother to tell anyone.…"
Apr 14, 2016
Ralph Pendergraph commented on Bernardo Espinosa's blog post Low cost L1+L2 GNSS RTK receiver for Drones. North RTKite receiver.
I am a professional surveyor in the US and an owner/operator of a SmaRTK receiver.  I am also a UAS owner going through the learning curve of UAV mapping.  I am not an experienced UAS mapper at this point.  I plan to work with the North Group to…"
Feb 22, 2016
Ralph Pendergraph replied to Tersus GNSS's discussion L1/L2 RTK trial user wanted

I am a USA surveyor with lots of gnss experience and an evolving UAS skill set. I have an Iris + and a newly purchased X8 just in. If your system will work with a 3dr X8 or iris, I would like to assist. I am in process of testing accuracies…"
Dec 27, 2015
Ralph Pendergraph commented on Rui Costa's blog post Applanix Offers Single-Board GNSS-Inertial System for UAV Mapping
"It's Trimble, so expect $$$ and to be proprietary as far as playing well with others.  Trimble makes great stuff but that is their current business model and they have priced themselves far away from many small companies."
Oct 19, 2015