OT Re: [aprsisce] DX reformatting (Dev: 2012/08/02 08:57)
- Puzzle caches aren't even part of my pocket queries.
HATE those things
From: Lynn W Deffenbaugh (Mr)
Sent: 3 Aug 2012 18:08:24 GMT
Subject: Re: [aprsisce] DX reformatting (Dev: 2012/08/02 08:57)
On 8/3/2012 1:41 PM, James Ewen wrote:
> For my purposes, these DX reports should be popping up to let me know
> about anomalous propagation, whether that is enhanced ground
> propagation, or a HAB flying off in the distance. These are local RF
> activities that are out of the norm, that I'd like to get waved in my
Ok, now I believe we've gone well beyond simply reporting on a
simple-to-determine DX and into some very non-APRS territory. It's hard
enough to describe some configurations let alone having another
"exclusion" list just for the purposes of determining if a given
directly-received station counts as "DX" in someone's mind.
I think it's time to stop turning this seemingly simple function of
determining if stations are being heard at a greater than normal
distance into something that only a hard-core propagation specialist
with the time and inclination to monitor what is normal versus enhanced
The distance limits are there, one to qualify and one to be worth an
instant notification, either via Status Report or DX cluster packet.
There's a Window for how long an older DX remains "king-of-the-hill",
and a Min Interval to prevent frequent beacons from a Trigger-qualified
DX from generating too many packets.
I'm adding an easier visibility to the internal DX information (right
click on the Port Status/APRS-IS OK pane and select from a popup) and
then calling it done, at least for the near term.
Your "simple" addition of a DX-cluster-formatted packet has already
generated more worms than I had counted on, but then, the entire DX
mechanism has gotten better as a result. As I said, I never really
liked the clock hour window, so I took this opportunity to fix it and
also added the Interval protection. Done.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
PS. And I still need to read Bob's notes about "gleaning for
gridsquares", but they can be frighteningly similar to solving a puzzle
geocache. (Almost) no matter what your solution, it'll give you a point
that's somewhere on the planet. Been there, done that, and avoid puzzle
caches ever since. But at least gridsquares are expected to be