I dont have a 20channelreceiver however I do have a 12 channelreceiver which came in the box with my Tom Tom Navigator 5 for PDA, whichi I use in my Treo 680 Smart Phone. The whole thing works perfectly and I couldn't ask for more as Sat Nav goes.
The GPS receiver looks identical to the 20channel one shown here and if this one works as well as mine does then you can't go wrong.
It has a matt cover which makes it stay put where ever you place it on the dashboard and in use I've found that it picks up a signal very quickly and once linked to the PDA by bluetooth it keeps the signal so long as it can see just a tiny bit of sky. Once linked I take the unit off the dash and place it on the floor of the car in between the seats and it keeps the signal through motorway tunnels and even during a traffice halt under a bridge! It does link ...
Advantages: Tiny, appealling, accurate, powerful and desirable. Disadvantages: Rubber cover for DC power supply breaks off easily.
) alternatives.
Suddenly, the GlobalSatBT338 popped up in front of me. It looked more like a fold-up mobile phone. I seriously thought that it was all looks, and no function. I was fortunately proven wrong.
One quick eBay bid, and a couple of days later, I was holding the GlobalSatBT338. The first thing that struck me was how small, but solid the device felt. Of the external appearance, only one thing bothered me, and that was the rubber cover for the DC power supply (to the lower left of the image shown). The rubber was so soft, that it felt rather anaemic.
The device is supplied with a large capacity 1700mAH Li-Ion battery. When you see how small this GPS receiver is, you'll be even more amazed that about half of that size holds the battery. The battery fits snugly and securely inside the device, by means of a slide off back cover ...
Advantages: Cheap and easy to use Disadvantages: Build quality an issue
****** Introduction ******
Welcome to my second review based around GPS receivers even though this is my second review this product was actually the first GPS receiver I purchased. I won't go into too much detail into the workings of GPS as I covered this in detail in my earlier review of the internet Bluetooth GPSreceiver( Why not take a look at this review go on you know you want to).GPS basically uses a series of satellites that orbit the planet to triangulate your position on the planet. A gps receiver reads the signal and with the use of navigation software (for example TomTom) and allows you to plan routes based on your current position and your destination.
******* Product Overview ********
This unit is a GPS receiver that works by slotting into a compact flash port in my case the one that I have on my IPAQ pda ...
Product Information for "Globalsat BT-359 20 channel GPS receiver module" »
Gps system
Product Type
GPS receiver module
Receiver
20 channel - Bluetooth GPS receiver
SBAS
WAAS, WAAS, EGNOS
Accuracy
Position - 10 m
Position - 1 - 5 m ( with WAAS )
Velocity - 0.1 m/sec
Interface
NMEA 0183
Aerial
Built-in
Acquisition times
Cold
42 sec
Warm
38 sec
Hot
1sec
Gps compatibility
Interface
Bluetooth
Connections
Connector Type
Antenna
DC power input
Manufacturer's product description
The GlobalSat BT-359 is the next generation Bluetooth GPS receiver. Top of the line Bluetooth GPS is both stylish and functional in true GlobalSat tradition. Taking its design criteria from the market leading BT-338 Globalsat has pushed the limits of GPS even further with greater sensitivity and accuracy, than ever before. The GlobalSat BT-359 contains the latest SiRFIII Low Power Chipset for high sensitivity. It communicates with Host Platforms (PDA, Laptop, and etc.) via Bluetooth Serial Port Profile. With Bluetooth version 2.0 and built-in ceramic patch antenna, the BT-359 provides faster acquisition times and improves accuracy in urban canyons and under dense foliage. It contains a replaceable battery with a large capacity, which enables the BT-359 to operate for up to 11 hours. A slide battery lid makes it easy to remove and replace the battery without the use of tools.
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