[aprssig] 1200 vs 9600 baud (was: Tracker3 9600 baud balloon tracker beta offer)

Hüseyin ODABAŞ, TA1DF ta1df.huseyin at gmail.com
Fri Dec 20 02:08:13 CST 2013


Hi to all

A Beagle Bone Black + AIS based 9k6 modem - low power UHF cape combo would
be a good combination as new year gift :-)

Best 73!

Huseyin TA1DF
20 Ara 2013 08:13 tarihinde "Scott Miller" <scott at opentrac.org> yazdı:

> I want to see more 9600 baud APRS on 70cm - we don't get a lot of consumer
> RF stuff down in the VHF bands and it's never going to be as cheap as the
> low-power UHF stuff that's churned out in massive quantities for consumer
> electronics.
>
> But it shouldn't be just a faster APRS network.  It needs to be a lot
> smarter - self-organizing and adaptive, not relying on centralized control
> but also not every man for himself ALOHA networking.
>
> I'm hoping to play around with that some myself, but right now I've got
> two more pallets of weather stations to finish packing... somehow running a
> full-time APRS business is leaving me less time to play with APRS.
>
> Scott
> N1VG
>
> On 12/19/2013 4:12 PM, Ted11 wrote:
>
>> Scott's balloon tracker has gotten me thinking again about a lingering
>> question, 1200 vs 9600 baud for APRS.  I think I understand this:
>>
>> 1.  9600 lets you send more data per time interval.
>> 2.  9600 requires tighter radio integration (can't just plug into the
>> microphone jack).
>> 3.  9600 seems to work best (only?) on UHF.
>>
>> Beyond those rather rudimentary constraints, I'm not sure how to decide to
>> use 1200 or 9600.  All my APRS stuff so far is done at 1200, but I'm
>> interested in what advantages 9600 might have.  So how would you answer
>> the
>> question, "When should I use 9600 baud for APRS and when should I use 1200
>> baud?"
>>
>> Thanks.
>>
>> Ted
>> K5KZ
>>
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