[aprssig] Auto-Answer meets Auto-Responder (AVRS)

[Bob Bruninga]

> do they send any kind of a tag that
> would indicate that it was an auto reply?

Yes, APRS requires that they begin any AutoAnswer with [AA].

At least that is what the original APRS required and was agreed by the
earlier authors.  Not sure it got into the formal spec.

Bob, WB4APR