this what they came back with.
Here are the answers to your questions:
1) AFAIK, it does not output the SDOP (error) data.
This is correct, the error data is not output when downloading GPS data.
2) What is the Hz rate of recording?
The SpeedPuck logging rate is adjustable and can be set at 1 Hz, 1/2 Hz, or 1/4 Hz.
3) What GPS chip does it use?
The SpeedPuck would work very well for the purpose of recording
records on GPS speed surfing. Thanks very much for your interest in the SpeedPuck.