[aprssig] New Project: WHERE-IS

Pete Loveall AE5PL Lists hamlists at ametx.com
Thu Mar 9 10:11:05 EST 2017

The reason for the different SSIDs was because there were (may still be) misbehaving IGates that would not properly gate non-zero-through-15 SSIDs to RF.  The 3rd party header permits (and your D72 supports) non-numeric SSIDs in messages as long as the IGate supports non-numeric SSIDs being gated to RF.  Direct gating to RF (not using 3rd party format) is not supported by APRS-IS due to loops and other issues that occur.

Hope this helps.


Pete Loveall AE5PL
pete at ae5pl dot net

> -----Original Message-----
> From: aprssig [mailto:aprssig-bounces at tapr.org] On Behalf Of Fred Hillhouse
> Sent: Thursday, March 09, 2017 8:07 AM
> Cc: 'TAPR APRS Mailing List' <aprssig at tapr.org>
> Subject: Re: [aprssig] New Project: WHERE-IS
> Since WHO-IS and WHO-15 have the same response, why not use WHERE-IS
> and WHERE-15?
> The WHO -15 is useable from a mobile while I don’t believe WHO -IS works.
> The 15 is made into a 4-bit code for TX whereas the IS will not resolve to four
> bits. But I haven’t tried this from my D72 so I can’t be sure. From an internet
> only client it doesn’t matter which one is used.
> Best regards,
> Fred N7FMH

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