[aprssig] "station which heard ... directly on the radio"

Kristoff Bonne kristoff.bonne at skypro.be
Sun May 19 15:45:01 CDT 2013


Hi Erv,



Doesn't "heared directly on the radio" not simply mean "no other 
stations in the path?"

Something like this:
  2013-05-19 22:24:24 CEST: 
ON0OST>APOST,WIDE2-2,qAR,ON1ARF-2:!5113.59N/00255.37E# (ALSO QTH PHONE 
REP. 439.300)


73
kristoff - ON1ARF


On 19-05-13 21:41, Erv Heimbuck wrote:
> I believe this is due to the fact that some digipeaters do not amend their
> own call to the packet so that when it is received by you it appears to have
> come direct because there are no amended digipeater call letters.
> This maybe an over simplication but I think is the essence to the problem
>
> Erv  K0OTZ
>
>
> -----Original Message-----
> From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
> Of Kristoff Bonne
> Sent: Sunday, May 19, 2013 11:27
> To: aprssig at tapr.org
> Subject: [aprssig] "station which heard ... directly on the radio"
>
> Hi All,
>
>
> yesterday and today, I have been experimenting with the project to use a
> 20 dollar RTL DAB/DVB-T dongle as SDR radio for a RX-only igate.
>
> Now, looking at my page on aprs.fi (http://aprs.fi/info/ON1ARF-2) I see
> this:
> Stations heard directly by ON1ARF-2 –
> (...)
> and then some stations, like this one:
> ON4NS-9 1 2013-05-19 12:08:31 2013-05-19 12:08:31 JO11NB > JO11LF 	19.6
>
> km 148° 	2013-05-19 12:08:31
>
> I did find this pretty odd so I looked in the "raw messages" for this
> station:
> 2013-05-19 12:08:32 CEST:
> ON4NS-9>UQPTY6,ON7EQ,ON0OST,qAR,ON1ARF-2:`y_.oR9>/`"4F}_"
>
> This does not look to be a "heard directly". It has been digipeated
> twice before reaching my node.
>
>
> So am I missing something here? Or is this a bug?
>
>
> 73
> kristoff - ON1ARF
>
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