[Dxspider-support] Dedup error?

Thu May 22 08:50:41 BST 2025

Yes – thanks Dirk – understand – the compromise is a reasonable one!

73

Andy, G4PIQ

From: Dxspider-support <dxspider-support-bounces at tobit.co.uk> On Behalf Of Simon Ravnič via Dxspider-support
Sent: 20 May 2025 13:03
To: The DXSpider Support list <dxspider-support at tobit.co.uk>
Cc: Simon Ravnič <s53zo at t-2.net>
Subject: Re: [Dxspider-support] Dedup error?

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 <mailto: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 <mailto: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 <mailto: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 <mailto:dxspider-support at tobit.co.uk> > 

Cc: Simon Ravnič <s53zo at t-2.net <mailto: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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