HOLUX 271 Problem - String with lat/long all zeros

NSGuy · Occasional Visitor Joined: May 04, 2007 Posts: 5

I have a Holux 271 and a Dell axim X5. Recently my GPS had trouble finding satellites (clear view of sky) and then after a reset (warm) the GPRMC string shows 0000.000N, 0000.000E and never updates. Can anyone help me?

mikealder · Posted: Fri May 04, 2007 6:54 am Post subject:

Welcome to the forum, given a clean view of the sky away from any buildings do matters improve after 20 mins? - Mike

NSGuy · Occasional Visitor Joined: May 04, 2007 Posts: 5

After 20, 30, 60, etc minutes it does not improve. The UTC time increases (date is back in 2006 i think) but the lat/long still remains all 0's.

And thanks for the welcome. It is great to have a place to ask people about these things.

mikealder · Posted: Fri May 04, 2007 3:05 pm Post subject:

I would expect it to have locked on far faster than taking 20 mins to be honest let alone an hour, if it were working that is. Do you have access to another PDA you could try it with to make sure that the unit is in fact faulty, I am fairly confident it has broken though.
It should still be covered under warranty though as these devices have been out less than a year IIRC - Mike

Skippy · Posted: Fri May 04, 2007 8:37 pm Post subject:

Yeah, I've had this before with Holux units when the battery has been run flat and the unit has lost it's settings. It might take 5 to 20 minutes with a clear sky view to get it's bearings again or it might just sit there and do sweet nothing. Confused

When you say you warm started it, do you have the SiRFTech or similar utility that does this? If so you may want to try doing a factory reset and see what happens. You will have to reset the Static Navigation and SBAS settings if you changed them from their defaults.

Alternatively you could take the battery out for a few hours and then try it again.
_________________
Gone fishing!

NSGuy · Occasional Visitor Joined: May 04, 2007 Posts: 5

Hi Skippy

I tried it and it still does not work after being out under a clear sky for over an hour. I do have Sirftek and I can do a factory reset but where do you put in those other values you were talking about? And what would the values be?

mikealder · Posted: Tue May 08, 2007 9:10 pm Post subject:

This is a GR-271 we are talking about so there is no option to remove the battery, it is a CF device:

If you want to try switching the device from SiRF mode to NMEA have a read of This it might be worth trying if the device is in the wrong communication mode - Mike

NSGuy · Occasional Visitor Joined: May 04, 2007 Posts: 5

I tried my GPS in another Pocket PC (HP Ipaq) and still the same thing. No satelites (excpet once #29 i think with very low signal) and the 000.000N, 000.000E always. This sat out under a clear sky for about 40 minutes.

I did try to switch between Sirf and NMEA mode once. Even under Sirf mode the 000.000 came up.

Skippy · Posted: Thu May 10, 2007 3:52 pm Post subject:

NSGuy · Occasional Visitor Joined: May 04, 2007 Posts: 5

I do appreciate you guys helping here. Still no luck though. I switched to SIRF and did a factory reset and still no accuires after 40 minutes. I am definitely running out of options I think!

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