[aprssig] UHF APRS

Scott Miller scott at opentrac.org
Wed Sep 28 14:16:04 CDT 2016


Andrew,

This is a technical discussion list.  Something like Twitter might be a 
better forum for one-line comments and musings, or maybe Tumblr for 
ongoing notes about projects and ideas.

The APRSSIG is an excellent technical resource and there are many people 
here with detailed knowledge of all aspects of the field who are more 
than willing to answer questions, share their expertise, and discuss 
technical issues, best practices, and operating standards.

It's not a substitute for Google.  I think everyone here, even Steve, 
would be fine with your participation on the list as long as you keep in 
mind some basic community expectations.

If you've got a question, try checking Google and the obvious available 
references first.  If you can't find an answer (and assuming the 
question is generally relevant to the subject matter of the list), you 
can ask here and explain clearly what it is you're trying to do, what 
you need to know, and where you looked.

If you've got something to share about a project or an idea (again 
assuming it's on topic), make sure you explain the background of what 
you're doing, how you're doing it, what advantage you see in doing it 
that way, and give details on your theories and observations.

This isn't English class and no one's holding you to strict standards of 
grammar and punctuation, but you'll get a much better response if you 
can express yourself in complete sentences, form coherent paragraphs 
from those sentences, and express complete thoughts in a way that others 
can easily follow.

73,

Scott
N1VG

On 9/28/2016 11:16 AM, Andrew Rich wrote:
> I don’t have to explain myself to you or anyone
>
>
> ------------------------------------------
> Andrew Rich VK4TEC
> w www.tech-software.net <http://www.tech-software.net>
> e vk4tec at tech-software.net <mailto:vk4tec at tech-software.net>
> m +61 (4) 19 738 223
> m 0419738223
>
>
>
>
>
>
>> On 29 Sep 2016, at 4:13 AM, Andrew Rich <vk4tec at tech-software.net 
>> <mailto:vk4tec at tech-software.net>> wrote:
>>
>> Rack off Steve
>>
>> ------------------------------------------
>> Andrew Rich VK4TEC
>> w www.tech-software.net <http://www.tech-software.net/>
>> e vk4tec at tech-software.net <mailto:vk4tec at tech-software.net>
>> m +61 (4) 19 738 223
>> m 0419738223
>>
>>
>>
>>
>>
>>
>>> On 29 Sep 2016, at 3:21 AM, Steve Dimse <steve at dimse.com 
>>> <mailto:steve at dimse.com>> wrote:
>>>
>>>
>>>> On Sep 28, 2016, at 7:00 AM, Andrew Rich <vk4tec at tech-software.net 
>>>> <mailto:vk4tec at tech-software.net>> wrote:
>>>>
>>>> I found you better accuracy out of APRS by sending just the full 
>>>> nmea string
>>>>
>>> Assuming you meant you _achieve_ better accuracy, sort of. The 
>>> difference is really precision, not accuracy - these two are related 
>>> but not synonymous. Use Google as I taught you to learn the difference.
>>>
>>> You get better precision from a NMEA string than the plaintext and 
>>> MicE APRS formats. If the accuracy of your input is high enough the 
>>> accuracy at the other end will also improve with greater precision 
>>> in your transmission. And if your input is NMEA, then sending out 
>>> the data in that format will have precision that equals or exceeds 
>>> the accuracy, but it is still very verbose. Generally Base91 gives 
>>> the best choice for both bandwidth and precision.
>>>
>>> Of course, this had nothing to do with Cory's question.
>>>
>>> Steve K4HG
>>>
>>> _______________________________________________
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>>
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