Here's what I could find on all three receivers. One advantage to the Holux is that it has a slide switch to turn it on and off, which is a lot easier than pushing a button and guessing when the receiver comes on. I don't know if the other receivers have that feature or not.
The Holux also has built in WAAS, whereas you might find it difficult to activate in either of the other two receivers you mentioned. I'm not sure how important that is in reality, nor do I know if, once you activate WAAS in the other two receivers if it stays on, which would mean you wouldn't have to mess with it again.
By the way, there is already a Globalsat BT-339 which advertises faster acquisition time but has shorter battery life.
The RoyalTek RBT-2110 is the improved version of RBT-2010. This new version has been improved with the latest second-generation SiRF star III chipset (GSC3f).
The GSC3f delivers exceptional sensitivity and extremely fast time to first fix (TTFF). Besides, the RBT-2110 has a autonomy of up to 17 continuous hours
with a new 1700mAh Li-Ion Battery.The RBT 2110 is compatible with Bluetooth devices with SPP (Serial Port Profile) like PDA, Smart phone, Tablet PC and Notebook. It satisfies a wide variety
of applications that are purposes in automotive and outdoor recreation navigation systems.
Specifications: . Dimension: 70mm x 41mm x 25mm. . Chipset: SiRF Star III (2nd Generation). . Weight: 85g. . Acquisition Time: . Requisition Time: 0.1 sec. . Hot Start: 1 sec. . Warm Start: 35 sec. . Cold Start: 42 sec. . Battery: Rechargeable 1700mAH. . Autonomy: 17h. . 20 channel all-in-view tracking. . Protocol: NMEA 0183 v. 3.0, GGA, GSA, GSV(5), RMC, @ 57600 BPS. . Compatible with SBAS (WAAS/ENGOS). . Bluetooth 2.0. . Led 3-LED: . LED display glowing is for GPS fixed. . Blinking is for gps not fixed. . Glowing is for BT connected. . Blinking is for not connected. Package contains: . RBT-2110 SiRF Star III Rev.2 (GSC3f). . Car charger. . 1700mAh Li-Ion Battery. . Neck strap. Globalsat BT-338 Bluetooth GPS Receiver for Motorola Q $129.95 Manufacturer: Globalsat Works with: Motorola Q Part# A550 Mnf# BT-338 Product Info table with 2 columns and 9 rows Name BT-338 GPS Receiver Sales Rank #1 GPS Chipset SiRF III Battery Time 17 hrs Wall Charger Included Car Charger Included USB Charge - Notes No navigation software included table endThe next generation Bluetooth GPS is here! The BT-338 utilizes the latest SiRF III WAAS chipset with 20-channel architecture to achieve highest sensitivity
and fastest acquisition time available.Treo and Windows Mobile users: When combined with a navigation program such as
TomTom or CoPilotrunning on your smartphone, you get a state-of-the art navigation system for a fraction of what pre-installed systems cost.
This compact GPS communicates with smartphones or a PC via the Bluetooth Serial Port Profile. It also contains a replaceable battery with a large capacity
(1700mAh), which enables the BT-338 to run up to an incredible 17 hours!! A slide battery lid makes it easy for battery removal. With the compact and sophisticated
design, this is a great GPS! . SiRF Star III high performance and low power consumption chipset . Communication with Host platform Via Bluetooth Serial Port Profile . Built-in ceramic patch antenna . Superior sensitivity for urban canyon and foliage environment . 3 LED to show the rechargeable Li-ion battery . Operation time:15 hours, in continuous mode . Bluetooth operation range:10 Meter BT-338 Package Contents: . BT-338 GPS Receiver . Protective Carry Case . AC Charger . 12VDC Car Charger . CD-ROM with User's Manual Holux Bluetooth GPS receiverOne of the strengths of Sendero's GPS is its ability to use the latest state-of-the-art commercial GPS receiver. This allows users to have the highest performance
and accuracy rather than being tethered to a built-in receiver. Holux GPSlim236 BluetoothNew! Sendero introduces the smallest and most sensitive Bluetooth GPS receiver on the market and the only Sirf Star 3 receiver with a physical on/off switch.
Meet Sendero's Holux GPSlim 236 Bluetooth GPS receiver. Distinguishing Features of the new Sendero's Holux GPSlim 236: . Small Size: 2.7 inches long, 1.9 inches wide and 0.8 inches thick. Highest Sensitivity: Sendero's Holux uses the new SiRF Star III low power Architecture, which picks up satellite signals from inside a purse, vehicle
and even inside some buildings. Sendero's custom Holux is the only receiver with the extra WAAS satellites enabled by default, giving it the highest degree
of sensitivity on the market.. Accessible Power switch: Most GPS receivers have a power button, making it somewhat tricky for a blind user to know the on/off status. Sendero's Holux
has a tactile slide switch so it is easy to feel that up is On and down is Off.
. Custom Case: Sendero has created a leather and neoprene case to protect and conveniently house the little receiver. Besides the appropriate openings for
ports and the switch, the case has a clip and Velcro wings on the back for fastening the receiver to a shoulder strap.
. Accessible documentation: provided with all Sendero products including a Getting Started document for the Holux and a text version of the Holux manual.
. Built in SiRF Star III Low power consumption chipset.. 20 parallel satellite-tracking channels for fast acquisition and reacquisition.
. High speed signal acquisition using 200,000 time/frequency search channels.
. Built-in WAAS/EGNOS Demodulator without additional hardware. Or use the high-sensitivity software to get the fast acquisition and reacquisition in the
urban, canyon and foliage environments. . Compatible with Bluetooth Serial Port Profile (SPP). Low power consumption. Built-in rechargeable and changeable Lithium-ion battery without external power supply, and the working time lasts at least 10
hours.. Built-in rechargeable battery for memory and RTC backup and for fast Time To First Fix (TTFF).
. Support NMEA0183 v2.2 data protocol and SiRF binary code. . 4 colors LED to show the status of device. . Active antenna connector for getting better satellites signal.. FLASH based program memory. New software revisions upgradeable through serial interface.
. Small, sleek, and lightweight design easily fits in your hand. . Over-Temperature protection. Enhanced algorithms -SnapLock and SnapStart provide superior navigation, performance in urban, canyon and foliage environments.
Sendero Group Online price: $199 Dave An eye for an eye only makes the whole world blind." Gandhi----- Original Message ----- From: "gavin atkins" <gavin.atkins@xxxxxxxxxx>
To: <gps-talkusers@xxxxxxxxxxxxx> Sent: Saturday, February 24, 2007 8:27 AM Subject: [gps-talkusers] lobalsat verses Royaltek receivers
Hi allI've been using the Earthmate serial gps receiver for a couple of years or so but now want to go to Bluetooth, I've enquire with Humanware here in UK and they're no longer distributing the Holux receiver which I see is still being promoted on the Sendero website.They have suggested the following two models: - Globalsat BT 338 - Royaltek RBT 2110Have any users out there had experience of either of these receivers? I'd appreciate some comments before committing myself to one or the other, I've looked at the spec's for both and rather like the sound of the Royaltek what's your thoughts?I use the gps with M'power daily in town and rural settings on foot, bus, train and by car.Kind regards Gavin and trusty Mr Nathan Gavin Atkins, tel: M 07702:051633, Email: gavin.atkins@xxxxxxxxxx
