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Home > Hardware Reviews > Mobiles

Friday, February 03, 2006
Haicom 305-III

1. Introduction

Haicom is a leading company in the GPS arena, offering Bluetooth and CompactFlash (CF) GPS devices geared for specific user groups. Haicom kindly offered us the chance to test the Haicom 305III and compare it with another well known device from rival Globalsat, the BC-337. Which CF GPS receiver performed better and which offers more? Read on to find out!

- Haicom 305III

The HI-305III is a GPS receiver with Compact Flash type I / mini-1394 interfaces and built-in active antenna for high sensitivity to tracking signal. It is based on the SiRF star III Ultra high sensitive chipset and supports all functions (Single Sat updates in reduced visibility, Superior urban canyon performance, Foliage Lock for weak signal tracking, etc.).

The HI-305III is well suited to system integration and for users who use any kinds of mobile devices, such as PDAs, notebook PCs, Tablet PCs, etc. It satisfies a wide variety of applications for car navigation, personal navigation or touring devices, tracking and marine navigation purposes. Users can simply plug it into a PDA or other type of handheld PC running suitable mapping and routing software for navigation.

- Used chipset

The SiRF III chipset has the following specifications:

Chipset: SiRF Star III WAAS enabled
Frequency: 1, 1575.42 MHz
C/A code: 1.023 MHz chip rate
Channels: 20 channel all-in-view tracking
Position Accuracy: 10 meters, 2D RMS 
~ 5 meters, 3D RMS WAAS
Velocity: 0.1 m/s
Time: us synchronized to GPS time
Default: WGS-84 Acquisition Time (Open sky, stationary)
Reacquisition: 0.1 sec., average
Hot start: 1 sec., average
Warm start: 38 sec., average
Cold start: 42 sec., average
Altitude: 18,000 meters (60,000 feet) max.
Velocity: 515 meters/second (1000 knots) max.
Acceleration: Less than 4g
Jerk: 20 m/sec
Protocol messages: NMEA-0183 output protocol
Output format: GGA(1sec), GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec)
Operating temperature: -20° to 60° C
Humidity: 5% to 95% Non-condensing

Looking at the SiRF III specs, we can see that the chipset is capable of receiving up to 20 satellites (actually 12 maximum), has very low Hot/Warm/Cold start times and its accuracy reaches ~5m when the WAAS mode is enabled.




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