Here is some information about the complete system used to record, transfer, store, display and download temperature data.

A block diagram outlining the system can be seen here.

Use the "back" button to return from the following links.

Two types of KOOLTRAK logger are being carried.

Loggers 1 to 5 are standard logger model number 214002, standard unmounted loggers, along with mounting parts 215011 & 215012.

Loggers 10 & 11 are water and pressureproof loggers model 217001

The KOOLTRAK interface and KOOLPAD software are part number 232

The PocketPC is an iPaq/HP model xxxx.

The satellite phone is a Globalstar model xxxxxxx

The satellite phone service is provided by Skycall Communications

Data processing in Germany is performed by Celsinet.de, an associate of KOOLTRAK, Inc.

Data presentation in the USA is provided by the website of KOOLTRAK, Inc.

The data processing system used for the Pacific Crest Trail Expedition was created by Volker Kinkelin of Celsinet.de and Dr. Roland Bradbury of KOOLTRAK, Inc.