Matzoh Man

Is there any way to speed up the long, long wait it seems to take my Holux gm270 to get a cold fix? Since I start the day always in precisely the same spot can that position somehow be memorized? Also, what is the proper orientation for the GPS for best reception. I have mine, in a Dell Axim X50v, mounted vertically in a dashboard mount pointing straight up through the windscreen.
thanks.

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kcallahan

I have the Holux GR 271. I mount mine horizontally. However, I've done it vertically without any problems. Mine locks on in about 30 seconds. Are you using the external antenna that came with your unit? I know when I was researching to buy mine, the average cold fix time on your unti was about a minute. Is that about how long it takes your to lock on?

JakeRich

If you use it every day, it should not be doing a cold fix every morning unless the little backup battery/capacitor that holds up the memory in the receiver has failed. It should be doing a warm fix, which according to this review takes about 38 seconds, average. (A cold fix is 45 seconds, average.) If you are moving during that time, or in an urban setting, or under trees, or any other circumstance where the sky is blocked, times may increase.

The GM270 is an older receiver, using the SIRF II chipset. It can't compete with the newer receivers for speed of operations, although in its day it was pretty good.

Matzoh Man

Is this "battery" rechargeable?

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JakeRich

It charges when you have the unit in the CF slot, taking power from the Axim. It is most likely not a real battery, but a capacitor that holds the charge and slowly discharges it to hold up the memory. If you watch on GPSInfo, or in your mapping software, if it's really doing a cold fix the icons on the little "radar" map of the satellites will all go to the outer ring at due north. Then they will suddenly pop to their spread out position once the almanac and ephemeris data has been received. If they start spread out and don't go to the north position, then it's not a cold fix, it's a warm fix, just taking the 38 seconds required by that unit.

Matzoh Man

Thank you. Appreciate the clear explanation.

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