[aprssig] !x! (was: IS-to-RF proposal (rev b))

Gregory A. Carter gcarter at openaprs.net
Fri Dec 30 23:59:05 EST 2011

I tend to agree here, if you don't want your position seen or
archived, don't send it.


On Fri, Dec 30, 2011 at 1:58 PM, Heikki Hannikainen <hessu at hes.iki.fi> wrote:
> On Fri, 30 Dec 2011, Steve Dimse wrote:
>> On Dec 30, 2011, at 10:50 AM, Lynn W. Deffenbaugh (Mr) wrote:
>>> And is it honored by other APRS-IS viewing implementations?
>> A quick check of LB9KE-7 shows aprs.fi ignores it and APRSWorld respects
>> it (the latter has a posit from Dec 6 that did not include !x!). That
>> aprs.fi never got called on it shows just how few people care.
> Someone has requested it from me a few years back, and I have implemented it
> in aprs.fi, but it seems like my code requires it to be in the beginning of
> the comment string for position packets. For positions I probably thought it
> could be a bad idea to allowed it to appear anywhere - it might be valid
> encoded thing in some APRS data extension, or could appear in someone's
> comment text accidentally. Or maybe I read the specification that way for
> some reason. Maybe it wasn't documented anywhere at that point, I don't
> remember. :)
> My database shows a whopping 3 callsigns transmitting positions with !x! in
> there. Not a hugely popular option. I do understand the requirement but if
> someone really, really does not want to be archived, they shouldn't transmit
> in the first place as there is no hard requirement for anyone to actually
> implement this.
> With the arrival of big hard disks and wideband SDR recording solutions, the
> fact that nothing can ever be deleted from the Internet once published
> there, will probably extend to HF, too.
>  - Hessu
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