[OZAPRS] HF APRS and HF Balloon APRS

[vk2ycj at bravo.net.au]

Matt,

Thanks for the link to the PDF.  It's very useful.


Jamie VK2YCJ



> You should take care for how you set up the path in your APRS packets. The
> following document provides some guidelines:
> http://xa.yimg.com/kq/groups/6764416/243730317/name/APRS.pdf
>
> (this was a recent point of discussion on the TAPR APRS mail reflector)
>
> 73, Matt VK2RQ
>
> On 17 Jul 2014, at 8:47 am, vk2ycj at bravo.net.au wrote:
>
>> Hello,
>>
>> The Pico Balloons sent off by Andy VK3YT has been very inspiring to lots
>> of people - me included.  I'm amazed !
>>
>> I'm running VHF APRS on 2m in the car and would like to try HF APRS in
>> the
>> car on 30m.
>>
>> Later something in a balloon might be fun too.
>>
>> So, as I understand it, in the car on VHF APRS we use smart beaconing to
>> keep the resolution of spots up but with minimal packets to prevent VHF
>> channel congestion.  Correct ?
>>
>> I'm not sure what HF APRS does in the car - but my guess is that it
>> reduces the spot resolution to give enough spots to be useful and to
>> greatly reduce HF channel congestion.  Correct ?  Any other smarts
>> involved ?
>>
>> With balloon APRS I assume the beaconing rate is probably set to once
>> every 5 minutes - for two reasons - to reduce channel congestion and to
>> preserve battery life.  PIC and Arduino type controllers can be put to
>> sleep for 4.5 minutes to reduce battery drain to almost nothing - then
>> woken up to collect the GPS and other data and then used to transmit a
>> packet - then put to sleep again.  Correct ?  Any other smarts involved
>> ?
>>
>>
>>
>> Thanks,   Jamie - VK2YCJ
>>
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