How do you know these particular stations are on 440?

You haven't included any of the exact text of the packets that are bothering you, but (just looking at the technical possibilities):

1. Do you have an APRS-IS (Internet) connection that is bringing in those packets? Similarly, do you have a VHF TNC connection that is bringing in your local VHF traffic? YAAC displays everything coming in from all open ports unless you use filters to restrict your view.

2. Are they Object or Item packets identifying 440MHz voice repeaters that were digipeated from VHF? This shouldn't occur, but that doesn't mean someone doesn't have a misconfigured station pushing the info for a local repeater around the world.

3. Is the 440 just part of the text of the packets (such as someone at 44 degrees and 00 minutes latitude), or did someone include their local listening frequency in their packet? Again, that is useless on HF APRS, but it doesn't mean someone didn't do it.

I sincerely hope you didn't set up your station as a cross-band digipeater between VHF and HF with the normal VHF-only digipeat aliases allowed on the HF port. Similarly, you shouldn't be a transmit-capable I-gate to HF (especially one forcing extra packets from the Internet). The low baud rate of HF packet and the huge coverage area (with corresponding high chance of hidden-transmitter collisions) doesn't leave room for extra packets on the HF APRS frequencies.

Just a few words of advice....

Andrew, KA2DDO

author of YAAC

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