Power Hobby PHGSM020 GPS + GLONASS Performance Analyzer Bluetooth Speed Meter & Data Logger

This makes your RC car realistic and Hi-tech analysis of your vehicles' performance.

Works perfectly, better than expected. Fit nicely in my original RC10. The price was easy to swallow.

Edit I am too impatient, device probably would’ve worked properly if I read any instructions. I am leaving my initial review to help people understand it is not the product, it’s you! Let it connect to the satellites before installing on the RC! (Loses Bluetooth connectivity within 10 ft, rarely finds satellites)

This version is awesome and easy to use any of the tracking or telemetry features. The drag and tracking work great for boats.

These seem to be the standard when used for RC speed runs but I find the software awkward where you have to do a start-stop-read just to zero out and then do a start again to start logging. I switched back to my stand alone unit because I was using my phone to record video and found it cumbersome to go back and forth between apps. It's a good unit but just not for me.

I originally bought this for my drag car, but also decided to put on my 1/10 scale on road car to test different performance changes and this is very easy to use and you can fit them anywhere on the car. I wish I would of had one earlier. Great tool to enhance changes on your cars.

I have tested accuracy against other similar devices and cellphone apps, accuracy is acceptable for what I need to know, it is not a lab precision instrument. I’ve attached a couple of pictures of what information you’ll get on a track and flying test, and that’s it, don’t expect any kind of logs files, charts of any other information. Ease to use, just follow instructions.

Constantly drops signal and it’s unreliable. Wanted to return it but I’m past the return window.