¿ªÔÆÌåÓýActually, the digipeater symbol with a red question mark on it has a different meaning. This indicates a "stealth" digipeater (or I-gate) which has not (as far as YAAC is concerned) sent a position report with the digipeater's
own position and symbol code, so YAAC is guessing the digipeater's location based on the reported positions of all the stations who were reported as using that digi or I-gate as the first relay station.
This explains why the I-gate is in the wrong place (YAAC hasn't been told where it is yet) and the non-standard symbol.
You can take those off the map by disabling the stealth digi symbol on the filter dialog's Symbol tab.
You can also disable guesstimating station locations (called "vicinity plotting") entirely by opening the expert-mode Configuration dialog and unchecking vicinity plotting on the Behavior tab.
Note that vicinity plotting also applies to real stations who have sent only APRS packets other than position reports, so we know the station exists but we don't know where. In that case, if we have a good location for the first
digipeater or I-gate that heard it, we will guess the station location as near that I-gate or digi.
Vicinity plotting locations are always replaced with real locations once YAAC hears a real location for the station.
Hope this helps.
Andrew, KA2DDO
author of YAAC From: [email protected] <[email protected]> on behalf of Christopher Rose <kb8uih88@...>
Sent: Wednesday, December 13, 2023 12:53:48 PM To: [email protected] <[email protected]> Subject: Re: [yaac-users] Help me understand... RX only I-gate showing on map when filtered to RF only I treat question marks in the star icon usually as a corrupted report. When I see them they usually are not where they are supposed to be and I delete the station manually. I see them all the time. I don't pay attention to how they report(via rf or tcip)
as I recognize the call signs and know they aren't in their correct location.
Chris
-------------------- From: "Mike W7MVG" <mike@...> Reply-To: <[email protected]> To: <[email protected]> Sent: Wed, Dec 13 2023 12:33 PM Subject: [yaac-users] Help me understand... RX only I-gate showing on map when filtered to RF only Can someone please help me understand what I'm seeing here? I have my filter set to only show stations from KISS-over-TCP. I see no incoming packets in the raw packet sniffer, yet N7LF-10 has shown up on my map. When I go look at N7LF-10 on aprs.fi it says it's an RX only I-gate and shows it's location about 60 miles east of me. But in YAAC, it's showing up about 20 miles south of me. So, my question is, without any packets showing up in the packet sniffer, and with the filter set to RF only, how did this station show up? And why is it's location so far off from aprs.fi? Bad decode? Thanks. Just trying to figure this all out. |
