In November of 2008 Sendero purchased the freedom keychain GPS
receiver and did our own independent tests of this
receiver and this is what we found....
When placing the receiver on a desk by a window using the odometer
function of the Sendero GPS we were able to watch the distance
accumulate. The receiver was not moved within a 5 minute time
fraime
the receiver s distance cumulated a quarter of a mile.
when the receiver is stationary and is accumulating distance this
shows that the receiver is more susceptible to multi path
environments. If it is accumulating distances when in a controlled
situation with little to no multi path it will be more susceptible to
multi path in city's such as New York or San Francisco.
Another test, we walked at pedestrian speeds in a rectangle that's
directions are East, South, West, then finally North. Tests were
done
with the receiver clipped to the shoulder strap and again in the back
pocket.
The receiver had a hard time maintaining the direction. For example
when the receiver went from west to north for two blocks the
receiver
thought it was heading North West instead of due North. The receiver
finally changed direction once it made the final right and was
heading
East once again.
Based on our results Sendero does not recommend this receiver.
Chris Grabowski
- Customer Support and Product testing
Sendero Group
"The GPS company." Also, distributors of the mPower, PK, Victor
Stream, Voice Sense, Braille Sense, KNFB Mobile Reader, Talks,
Miniguide and
ID Mate
Phone: 888-757-6810 EXT. 113
Email: chris@xxxxxxxxxxxxxxxx