RF Recording of "GoodToGo!" Electronic Tolling System in Washington State

This dataset contains an IQ recording of the "GoodToGo!" electronic tolling system used in Washington State, which operates in the 915MHz ISM band.

Recording details:

• Format: Complex Float 32 (a pair of 32-bit floats for each sample)
• Software: GQRX
• Hardware: R820T-based RTL-SDR with the default ~4.5" dipole antenna
• Center frequency: 914.9MHz
• Bandwidth: 2.4MHz

The first 2 recordings were made on April 11th, 2023 while driving along I-405 near Bellevue. The recordings were made after tolling hours and the vehicle wasn't in the tolling lane, so my vehicle tag wasn't actually scanned.

The final recording was made on April 23rd, 2023 while driving along the SR520 bridge. My vehicle tag was scanned.

The toll readers are multi-protocol and emit both ISO 18000-6B (SeGo) and ISO 18000-6C query commands which can be decoded.