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[aprssig] Identifying TX Igates

Bob Bruninga bruninga at usna.edu
Mon Sep 19 16:51:17 UTC 2011


> What about Wide Digi's that are also full service Igates?

My general thought is that the value of an IGate trumps a digi.  Such a
high-value site would probably want to use the IGate symbol *and* have PHG
data plus then it should also be originating (direct only) the usual
http://aprs.org/localinfo.html Frequency Assets in the area.

Just my 2 cents.
Bob, WB4APR


On Sep 19, 2011, at 11:39 AM, Bob Bruninga wrote:

> All IGate operators please read and consider action on this proposal.
>
> RX-only IGates kill the functionality of the APRS-IS as a universal
system!
> And they give casual observers the impression that APRS has global
> connectivity, when in fact, that view has lots of invisible holes because
of
> RX-only IGates.
>
> Compounding this problem is that we have no way of knowing if people are
> using the right symbol for their IGate.  Are they using "I" because it is
> really  a TX Igate, or just because it seems logical?
>
> Using http://www.findu.com/cgi-bin/symbol.cgi?icon=Iamp&limit=2000 I see
960
> "I&" Igates
> Using http://www.findu.com/cgi-bin/symbol.cgi?icon=Ramp&limit=2000 I see
130
> "R&" Igates
>
> Maybe we need to have a 3rd symbol, a "T" Overlay so that operators of
> serious two-way IGates and indicate their dedicated intent to provide good
> APRS-IS local service.  These guys will take the trouble to indicate a TX
> Igate.  When we see one of those, we have proof-positive that the IGate
> includes a two-way TX capability.
>
> We could even go one step farther.  We could indicate the NUMBER OF HOPS
> that the IGate uses by default for IS-to-RF packets.  This could help us
> better manage overlapping IGate coverage...  So how about this plan:
>
> I& - is an IGate, but is ambiguous with respect to transmitting
> R& - means it is definitely an RX only IGate
> T& - Means it is definitely a TX IGate with one hop path only
> 2& - means it is a TX igate clobbering two hops in all directions
> 3& - means it is a TX SPAM GENERATOR , (or a legitimate special case)
> Etc..
>
> Should we do this???
>
> Bob, WB4APR
>
> An easy way to check an IGate is to find a mobile Kenwood, Yeasu or other
> two-way APRS messaging device on http://map.findu.com/callsign and then
from
> the internet send him a message.  If he gets it, then the nearby IGate is
> 2-way.
>
>
>
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