RF engineer needed – review GPS tracker scan data (remote, small job)

Small remote job for someone with hands-on RF experience.

My client thinks there may be a GPS tracker hidden in his car. I need someone to help with the technical side:

1. Recommend a Bluetooth scan app (iPhone or Android) and an RF detector or spectrum analyzer setup. The client may use a tinySA Ultra.
2. Write a short test plan: which bands to scan, what settings to use (max hold, RBW, span), and how to test while the car is being driven.
3. Review the scans, screenshots and photos the client sends. Write short findings: tracker signal or not, and why.

You must know how cellular trackers behave (LTE-M/NB-IoT/2G bursts, reporting intervals). You must also be able to tell a tracker apart from a phone or the car’s own telematics modem.

All communication goes through me. No contact with the end client.

Two milestones: plan and checklist, then review of the data.

To apply, answer in 2–3 lines:

1. Have you used a tinySA or a similar spectrum analyzer? Which one?
2. How would you tell a hidden tracker apart from the car’s built-in modem on a spectrum scan?