[aprssig] Repeater Items

[Curt, WE7U]

On Tue, 11 Jan 2005, Eric H. Christensen wrote:

> Object Reports specify an Object's position, can have an optional
> timestamp, and can include course/speed information or other
> Extended Data.  Object Reports are intended primarily for plotting
> the positions of moving objects (e.g. spacecraft, storms, marathon
> runners without trackers).
>
> Item Reports specify an Item's position, but cannot have a
> timestamp.  While Item reports may also include course/speed or
> other Extended Data, they are really intended for inanimate things
> that are occasionally posted on a map (e.g. marathon checkpoints
> or first-aid posts). Otherwise they are handled in the same way as
> Object Reports.

Items are shorter packets as well both because of the missing
timestamp and because the name is a variable-length field.

If you really want to throw the Kenwoods for a loop you use Base-91
compressed Items and throw some weather info into the comment field.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
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