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From: Tim Watts <tw_usenet@dionic.net>
Newsgroups: comp.os.linux.misc,comp.sys.raspberry-pi
Subject: Re: Keeping 'order' without RTC.
Date: Wed, 04 Mar 2015 11:01:13 +0000
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Xref: csiph.com comp.os.linux.misc:13866

On 04/03/15 10:00, Martin Gregorie wrote:
> On Wed, 04 Mar 2015 07:31:59 +0000, Tim Watts wrote:
>
>> For a Raspberry a USB GPS would probably be cheaper and simpler -
>> bearing in mind the GPS will probably have to be mounted in the roof
>> (depending on whether the roof is insulated in foil faced insulation) or
>> near a window on the end of a long cable (USB lengths permitting).
>>
> Thats another reason for using a 'blind' GPS rather than a handheld: many
> of them are sealed, weatherproof units.
>
>

And damn expensive (several hundred pounds).

I think a blind GPS with RS232 downlink (or RS485 with 232 converter as 
in the Trimble I once used at work) is *slightly* approaching overkill 
for this application!