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Peter Kessler
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Joined: 08/10/2002 09:12:29
Posts: 129
Location: United Kingdom
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 Posted: Sat Oct 08, 2005 1:02 am Post subject: Losing GPS reception in the evenings |
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I'm using a Fortuna GPSmart BT receiver, an Ipaq RX3715, and TomTom 5.10. Recently I've noticed that I'm losing reception in London in the evenings starting around 7.30pm. Reception shrinks to 2 or 3 sats, and the receiver won't get a fix. Then in the morning, all is well again. I also have Memory-Map, and it suffers exactly the same problem.
Anyone else experiencing this? What on earth (or in the sky) could be causing it?
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Afterburner
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Joined: Aug 23, 2005
Posts: 12
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| Posted: Mon Oct 10, 2005 9:05 am Post subject: Re: Losing GPS reception in the evenings |
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| Peter Kessler wrote: | | I'm using a Fortuna GPSmart BT receiver, an Ipaq RX3715, and TomTom 5.10. Recently I've noticed that I'm losing reception in London in the evenings starting around 7.30pm. Reception shrinks to 2 or 3 sats, and the receiver won't get a fix. Then in the morning, all is well again. I also have Memory-Map, and it suffers exactly the same problem. |
I used to find that on some days I had better reception than others, but that was before I changed to a BT SysOnChip device, which almost always gives me 5 bars. I found that bad weather caused my old Fortuna Xtrak to drop from 6 to 3 satellite locks, and on some days for no reason (all other conditions being equal) there were poorer results than usual but I was told that atmosperics and sun-spot activity can cause these fluctuations.
I've never found diurnal fluctuations in my readings, though. Have you tried borrowing someone else's BT unit for a day or so?
David |
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Peter Kessler
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Joined: 08/10/2002 09:12:29
Posts: 129
Location: United Kingdom
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| Posted: Mon Oct 10, 2005 1:02 pm Post subject: |
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| I haven't - but I will now! |
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robdaglish
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Joined: Oct 06, 2005
Posts: 7
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| Posted: Tue Oct 11, 2005 2:49 pm Post subject: |
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| Any radio hams out there will tell you that the atmosphere changes quite dramatically at night - a couple of separate layers merge (F1 & F2, I think - it's while since I studied this!) but I've never noticed this causing me a problem with my GPS - could it be weather conditions instead? |
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Peter Kessler
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Joined: 08/10/2002 09:12:29
Posts: 129
Location: United Kingdom
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| Posted: Tue Oct 11, 2005 11:08 pm Post subject: |
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| don't think so, it happens on clear evenings. Could just be my old GPSmart getting ready to kick the bucket? |
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