[Dxspider-support] Dedup error?

[Keith, G6NHU]

I do wonder why beacons get spotted, especially as they’re always there!

73 Keith.

On 20 May 2025 at 13:03 +0100, Simon Ravnič via Dxspider-support <dxspider-support at tobit.co.uk>, wrote:
> I understand. This is far more important than the beacons. Will educate my user.
>
> 73 & TNX
> Simon, S53ZO
>
> > On 20 May 2025, at 11:55, Dirk Koopman via Dxspider-support <dxspider-support at tobit.co.uk> wrote:
> >
> > If you remove the delay, then that MAJOR vector of flood attacks opens up again. I cannot stress enough how effective this part of the filtering process is.
> >
> > So, what perhaps we should consider is whether to change the default delay or educate the user about how the filter works and encourage him to modify his spotting behaviour.
> >
> > There HAS to be a delay.
> >
> > Perhaps someone could do some analysis after the contest at the end of the month to determine what an optimum value might be? I am not going to be near a suitable computer.
> >
> > It is tunable from the console.
> >
> > I understand the concern about corrections but is that more important than flood protection?
> >
> > 73 Dirk
> >
> > > On 19 May 2025, at 09:50, g4piq via Dxspider-support <dxspider-support at tobit.co.uk> wrote:
> > >
> > > I have seen the same thing. Changing frequency does not seem to defeat the dupe spot timer - which I think it should. I know there was a parameter for a minimum frequency shift to count as a new spot which I think got moved down (quite correctly)  from 25 kHz to 1 kHz.
> > >
> > > This also impacts the ability of a user ti correct a spot accidently sent on the wrong frequency before the 5 min timer expires.
> > >
> > > 73
> > >
> > > Andy, G4PIQ
> > >
> > >
> > >
> > > Sent from my Galaxy
> > >
> > >
> > > -------- Original message --------
> > > From: Simon Ravnič via Dxspider-support <dxspider-support at tobit.co.uk>
> > > Date: 19/05/2025 09:22 (GMT+00:00)
> > > To: The DXSpider Support list <dxspider-support at tobit.co.uk>
> > > Cc: Simon Ravnič <s53zo at t-2.net>
> > > Subject: [Dxspider-support] Dedup error?
> > >
> > > Hello,
> > >
> > > my user, S51ZO is often spotting beacons and complained to me that he gets wrong duplicate warnings.
> > >
> > > This is what I found out:
> > > 2025-05-10 16:03:08 GMT  1296090 S55ZMS/B   -> FORWARD
> > > 2025-05-10 16:04:30 GMT  1296938 HG3BUB/B   -> FORWARD
> > > 2025-05-10 16:04:46 GMT  2320090 S55ZMS/B   -> DUPLICATE
> > > 2025-05-10 16:06:10 GMT  3400090 S55ZMS/B   -> DUPLICATE
> > > 2025-05-10 16:06:53 GMT  5760885 HG3BSA/B   -> FORWARD
> > > 2025-05-10 16:07:18 GMT 10368070 S55ZMS/B   -> DUPLICATE
> > > 2025-05-10 16:09:23 GMT 10368930 HG3BS/B    -> FORWARD
> > > 2025-05-10 16:09:50 GMT 10368975 HG1BSB/    -> FORWARD
> > > 2025-05-10 16:14:16 GMT  1296878 9A0BLP/B   -> FORWARD
> > > 2025-05-10 16:25:33 GMT 10368050 S55ZRS/B   -> FORWARD
> > > 2025-05-10 16:25:48 GMT  5760045 S55ZRS/B   -> DUPLICATE
> > > 2025-05-10 16:27:36 GMT 10368018 OE8XXQ/B   -> FORWARD
> > > 2025-05-10 16:41:14 GMT  3400090 S55ZMS/B   -> FORWARD
> > > 2025-05-10 16:41:33 GMT  5760045 S55ZRS/B   -> FORWARD
> > > 2025-05-15 18:15:46 GMT  2320890 HG3BUC/B   -> FORWARD
> > > 2025-05-15 18:16:35 GMT  5760885 HG3BSA/B   -> FORWARD
> > > 2025-05-15 18:18:58 GMT 10368930 HG3BSB/B   -> FORWARD
> > > 2025-05-15 18:20:00 GMT  1296938 HG3BUB/B   -> FORWARD
> > > 2025-05-15 18:20:59 GMT  1296975 HG1BUB/B   -> FORWARD
> > > 2025-05-15 18:21:47 GMT  2320975 HG1BUB/B   -> DUPLICATE
> > > 2025-05-15 18:22:51 GMT  2320975 HG1BUB/B   -> DUPLICATE
> > > 2025-05-15 18:23:25 GMT 10368975 HG1SB/B    -> FORWARD
> > > 2025-05-15 18:26:17 GMT  1296090 S55ZMS/B   -> FORWARD
> > > 2025-05-15 18:26:31 GMT  2320090 S55ZMS/B   -> DUPLICATE
> > > 2025-05-15 18:26:45 GMT  3400090 S55ZMS/B   -> DUPLICATE
> > > 2025-05-15 18:27:07 GMT 10368070 S55ZMS/B   -> DUPLICATE
> > >
> > > So it appears that any two spots with the same callsign get compared, regardless of frequency. How long is deduping timer?
> > >
> > > Is this a bug or a feature?
> > >
> > > 73
> > > Simon, S53ZO
> > > S50DXS sysop
> > >
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