<br><br><div class="gmail_quote">On Sun, Jun 19, 2011 at 8:40 AM, Bob Bruninga <span dir="ltr"><<a href="mailto:bruninga@usna.edu">bruninga@usna.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">> What type of error checking does APRS have to<br>
> prevent corrupt data?<br>
<br>
</div>None. The AX.25 packet is assumed to be error free (unless someone has PASSALL turned on, and then the result is totally error vulnerable).<br>
<br>
But callsign-only errors can happen.<br></blockquote></div><br>But, it shouldn't happen enough that it appears to be a significant percentage of what the Igate is putting into the APRS-IS. First thing to check is that PASSALL is OFF. If PASSALL is OFF and it continues to be significant, try running the D700 in KISS mode to UI-View. Just a couple of month ago, we had a fella that popped up around here that was gating a larger number ( almost all ) of corrupted call stations. We verified that his TNC had PASSALL off, and it did, but would still send thru bad calls. Once we had him use KISS mode in UI-View to access the TNC, all the erroneous callsigns dissapeared. <br>
<br>Randy<br>WF5X<br> <br>