[aprssig] TAC-5

[Andrew Rich]

But I have heard it, on APRS IS

That is how I saw it


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Andrew Rich
Airways Technical Officer Grade 4
Surveillance - RADAR ADS-B
Amateur Radio Callsign VK4TEC
email: vk4tec at tech-software.net
web: www.tech-software.net
----- Original Message ----- 
From: "Pete Loveall AE5PL Lists" <hamlists at ametx.com>
To: "TAPR APRS Mailing List" <aprssig at tapr.org>
Sent: Tuesday, September 15, 2009 10:34 PM
Subject: Re: [aprssig] TAC-5


> The key is the term "tactical".  These are primarily RF-centric, not 
> APRS-IS-centric.  If you use TAC-5 in Australia, it won't affect the local 
> RF operations at the US event simply because the local station will 
> acknowledge locally generated messages (IGates should not gate your TAC-5 
> acknowledgement to RF since the local IGate has recently seen TAC-5 on 
> RF).  Don't try to make this too complex.  There is a purpose 
> (facilitating tactical communications) that these tactical station 
> identifications fulfill.  They are legal on RF in the country of their use 
> because they also contain the station callsign in the payload.  They are 
> RF-centric which means users of tactical callsigns must understand that 
> world-wide messaging and APRS-IS database usage is not guaranteed to be 
> available due to potential duplication elsewhere.
>
> As for Serj's request that the servers magically determine what is a 
> tactical callsign or not, that is not going to happen in the 
> near-real-time environment of the APRS-IS server.  There are filter 
> programs that can be put on the client machine (APRSFilter for instance) 
> that provide additional filtering capabilities beyond what is available in 
> the generic server-side filters.
>
> 73,
>
> Pete Loveall AE5PL
> pete at ae5pl dot net
>
>> -----Original Message-----
>> From: Andrew Rich
>> Sent: Tuesday, September 15, 2009 7:16 AM
>>
>> Yes but I can also use TAC-5
>> I can't use his callsign and he can't use mine.
>
> Yes, he can use your callsign.  It will make you mad, but as long as it is 
> being injected directly to APRS-IS (not directly to RF), it is "legal" 
> albeit annoying.
>
>> TAC-5 is a free for all.
>>
>> Callsigns are unique.
>
> Not necessarily, see above.
>
>> What happens if I run TAC-5 in Australia.
>>
>> And you try and message him
>
> _______________________________________________
> aprssig mailing list
> aprssig at tapr.org
> https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig


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