[time-nuts] More from the obsolete gps file: oncore nmea

bg at lysator.liu.se bg at lysator.liu.se
Sun May 30 21:51:23 UTC 2010


The export restricion is really speed & alt above limit. Low speed and
high altitude should be no problem. However many vendors have chosen OR
instead of AND.

   http://www.armscontrol.org/documents/mtcr  item 11

--

   Björn


> Mike,
> We're launching a weather balloon. Using APRS to track it. The balloon
> will easily reach altitudes in excess of 65535 ft. The tracker only
> accepts nmea input.
>
> Most gps units won't work over that number, for obvious reasons. Why
> bother to code beyond that number as few people will need it as well as
> the export restriction on altitude and speed.
>
> Sounds crazy, but then again, it's time nuts..
>
> Norm McSweyn
>
> ---- mike cook <mike.cook at orange.fr> wrote:
>> I see "high" is a relative term.
>>
>> em-406a seems to be spec'd for 18000 meters. where are you going?
>>
>>
>> Le 30/05/2010 22:35, normn3ykf at stny.rr.com a écrit :
>> > Hi all!!
>> > Not all oncores are created the same. I THINK (based on inference)that
>> some of the GT+ receivers don't support nmea. Bad luck on my part to
>> get those. BTW: M12+t's don't support nmea, either.
>> >
>> > I queried the gps id from the board, and noted when I tried to send
>> @@ci from tac32 that it said supported in ver2 and greater.. Mine is
>> ver1.
>> >
>> > Just my luck.
>> >
>> > Anyone got a nmea capable (proven) that they'd like to sell. Must be
>> capable of high altitude flight.
>> >
>> > Thanks.
>> > Norm n3yfk
>> >
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>> >
>>
>>
>>
>>
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