Limitations & Disclaimers:
1) This instruction will only work with GPS receivers using SiRF Chipset and not Evermore, for example the HI-303MMF.

2) This instruction required that your switch your GPS Data Protocol to SiRF from NMEA. This potentially will render your GPS useless in navigation software that only understand NMEA such as Mapopolis, iGuidance, Routis, etc.

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Free software you will need to complete this procedure:
- CE Monitor
- GPSTweak

Steps:
1. Switch the GPS to SiRF mode
Download and install CE Monitor (aka Win Fast Navigator) from above.
• Plug in the CF or Serial GPS
• Tap on Tools, Port Settings…, Ignore the error message of “Couldn’t find value!!” by taping OK 3 times.
• Usually, you will be connecting using NMEA and baud rate of 4800.
NOTE 1: Use COM1 for all Serial GPS receiver. For Bluetooth GPS, use COM 8 or 6 or 5. For CompactFlash GPS, you will be prompted with a COM port number as soon as you insert the CF GPS into the PDA.
NOTE 2: For complete Bluetooth COM Port Listing, please refer to: http://www.buygpsnow.com/forum/default.aspx?g=posts&t=106

• Hit OK to connect.
• Tap on Tools, Command…, tap on SiRF tab. Accept all default values and tap OK.
• Once GPS fix is obtained, exit CE Monitor.


2. Poll and Activate SBAS
• launch GPSTweak
• Go to Setup, Port Settings
- Select the same COM port as in CE Monitor
- Select SiRF
- Select the same baud rate set in CE Monitor
- Click OK
• Go to Setup, Connect, you will see "SIRF: Entering decoding thread"
• Go to Command, Poll WAAS/EGNOS Status and you will see the current SBAS status in "Source". It can be "Serial" or "External RTCM Data", i.e. SBAS is off or "WAAS/EGNOS", i.e. SBAS is active.
• Now go to Command, Toggle WAAS/EGNOS - this will activate SBAS and launching that command again will de-activate SBAS, regardless of the status seen in above.


NOTE 1: At present there are two geo-stationary satellites serving the WAAS area (Inmarsat IIIs: POR (Pacific Ocean Region) and AOR-W (Atlantic Ocean Region-West).

For more information on WAAS / EGNOS, please refer to GPSInformation.net
http://gpsinformation.net/exe/waas.html


NOTE 2: One have to be within 200 miles radius from Wide Area Ground Reference Stations (WRSs) to receive the broadcasted correction data. That is why WAAS coverage is not guaranteed and not available everywhere in the US.

Conclusion: Most GPS software has "snap to road" features and this makes the contribution of WAAS in street navigation not so critical.

For more information on WAAS / EGNOS, please refer to GPSInformation.net at: http://gpsinformation.net/exe/waas.html

Disclaimer:
This information is based on our observation and experiment in Atlanta area and any corrections or WAAS experience, please share it with other users here.

I have HAiCOM 204S Mouse GPS receiver for my HP iPAQ 1930.

What are the instructions to operate this resiver under WAAS/EGNOS?

Thanks
Emanuel

Hi Emanuel,

1) You will need a HAiCOM USB cable at:
http://www.buygpsnow.com/item.aspx?itemid=299

2) Then download a free program from LeadTek call Leadtek GPS Monitor (aka GMonitor) from their website.

3) In the program, you just have to open a COM port and turn on WAAS/EGNOS via the appopriate menu function.

Disclaimer: We DO NOT OFFER support on the use of the free software. We recommend our user to send it their receiver for us to turn on WAAS capability.

Can WAAS feature of HaICOM HI-303MMF be used with NMEA software?
How accurate is WAAS GPS reciever versus a non-WAAS unit?
Can USA GPS user take advantage EGNOS or is it a Europe only feature?

- Can WAAS feature of HaICOM HI-303MMF be used with NMEA software?
ANS: Yes.

- How accurate is WAAS GPS reciever versus a non-WAAS unit?
ANS: 95% of the time, WAAS give you 3 to 5 meters vs non-WAAS unit of 10 to 12 meters on average.

- Can USA GPS user take advantage EGNOS or is it a Europe only feature?
ANS: EGNOS is the similar system as WAAS but only available in Western European countries.

Hope this helps.