[aprssig] SSID for RF only Station with backup power

Curt, WE7U archer at eskimo.com
Tue Apr 10 09:38:59 CDT 2007

On Mon, 9 Apr 2007, Robert Bruninga wrote:

> So I propose the following:
> * Being there are less than 7 APRS symbols left
> * Being that there are many many more ideas to go
> * Therefore, APRS must expand its symbol set by using OVERLAYS
> * We need concurrence from all authors on receipt of an overlay:
>   - Receipt on all existing "overlyable characters works"
>   - Receipt on any other symbol will not break anything
>   - Eventually receipt of the overlay may be displayed somehow
>   - An overlay on a base symbol can trigger a different symbol

I have no problem with the above except for the last one.  It
requires code changes for all APRS applications.

This could signal the end of the line for unsupported apps & radios.
Not necessarily a bad thing, but I figured I'd mention it.

If we're going to break things on purpose I'd favor the
major.minor.more-minor scheme from the military spec:  It gives us
incredible capabilities as well as great compatibility for apps that
don't implement the 2nd/3rd level of detail or don't happen to have
the latest definitions.  Implement the first level of detail and
you're up and running.  Implement the 2nd level and you get more
detailed and descriptive icons.  Same for 3rd and beyond.

Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
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