Date   
Re: 25mhz xtal

Andy G4JNT
 

Ignore the frequency doubler part of this and just use the opamp section. 

Now, I'd also add 1:1 isolation transformers to break up earth loops, or at least be prepared to use them on some of the users.  
Had one or two interactions with loop injected interference.



On Tue, 11 Jun 2019 at 15:32, militaryoperator via Groups.Io <Military1944=aol.com@groups.io> wrote:
Subject: Re: [UKMicrowaves] 25mhz xtal

Hi I think a lot of use will be requiring
 
10 Mhz distribution amplifiers and filters  any one found a good value solution  
 
Regards Paul
 


I bought a s/h video distribution amplifier and feeding in 10MHz from sig gen the o/p looks ok to me, no distortion or such but no doubt someone will say you shouldn't use such, non-isolated, non this or that or some other technical aspect Paul. 

Still, it looks ok here so I guess I'll find out later the hard way, hi. 

cheers, Ben.

Re SG Labs 2.32Ghz transverter

Dave
 

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)

Re: Re SG Labs 2.32Ghz transverter

militaryoperator
 

Its a little link, shown on the diagram that came with the set or on their website. 

Needs a tiny iron as its an smd link. 

Looking at the set, sockets on the left, its just in from the 2nd socket down, needs moving I think from horizontal to vertical, or vice v etc. 

Ben.

-----Original Message-----
From: Dave via Groups.Io <drdavidnewman@...>
To: UKMicrowaves <UKMicrowaves@groups.io>
Sent: Tue, 11 Jun 2019 16:34
Subject: [UKMicrowaves] Re SG Labs 2.32Ghz transverter

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)


Re: Re SG Labs 2.32Ghz transverter

militaryoperator
 

I didn't want to risk mine so used a relay on the single o/p. 


B

-----Original Message-----
From: Dave via Groups.Io <drdavidnewman@...>
To: UKMicrowaves <UKMicrowaves@groups.io>
Sent: Tue, 11 Jun 2019 16:34
Subject: [UKMicrowaves] Re SG Labs 2.32Ghz transverter

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)


Re: Re SG Labs 2.32Ghz transverter

Tom GM8MJV
 

Dave

Yes have done so - it’s very simple - move a smd 0 ohm resistor over

Think the latest manual on web site shows it clearly as I just did it a week ago

If need more details (and I doub’t you will) ask

Tom

--
73’s

Tom
GM8MJV (IO85)

On 11 Jun 2019, at 16:34, Dave via Groups.Io <drdavidnewman=btinternet.com@groups.io> wrote:

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)



Re: Re SG Labs 2.32Ghz transverter

militaryoperator
 

looks to be from vertical to the horizontal. 
sglabs.jpg


-----Original Message-----
From: Tom GM8MJV <tom@...>
To: UKMicrowaves@groups.io <UKMicrowaves@groups.io>
Sent: Tue, 11 Jun 2019 16:47
Subject: Re: [UKMicrowaves] Re SG Labs 2.32Ghz transverter

Dave

Yes have done so - it’s very simple - move a smd 0 ohm resistor over

Think the latest manual on web site shows it clearly as I just did it a week ago

If need more details (and I doub’t you will) ask

Tom

--
73’s

Tom
GM8MJV (IO85)





On 11 Jun 2019, at 16:34, Dave via Groups.Io <drdavidnewman=btinternet.com@groups.io> wrote:

> Hello,
> I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
> 73
> Dave (G4GLT)
>
>
>
>



Re: Re SG Labs 2.32Ghz transverter

Dave
 

Thank you very much Ben and Tom for your advice. I think I have it now and understand what I have to do. That is very kind of you both.
73 Dave.

On 11 Jun 2019, at 16:47, Tom GM8MJV <@Tom8MJV> wrote:

Dave

Yes have done so - it’s very simple - move a smd 0 ohm resistor over

Think the latest manual on web site shows it clearly as I just did it a week ago

If need more details (and I doub’t you will) ask

Tom

--
73’s

Tom
GM8MJV (IO85)





On 11 Jun 2019, at 16:34, Dave via Groups.Io <drdavidnewman=btinternet.com@groups.io> wrote:

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)


Re: Video amps- was 25MHz Xtal

alwyn.seeds1
 

Dear All,

If the connected items are not such as to back-feed digital rubbish, video amps work quite well.

I have a spare one, I’ll try to put on e-bay this w/e.

Regards,

Alwyn
_____________________________________________________

Alwyn Seeds, Director
SynOptika Ltd.,
114 Beaufort Street,
London,
SW3 6BU,
England.

Tel.: +44 (0) 20 7376 4110


SynOptika Ltd., Registered in England and Wales: No. 04606737
Registered Office: 114 Beaufort Street, London, SW3 6BU, United Kingdom.
_____________________________________________________

Re: Video amps- was 25MHz Xtal

Andy G4JNT
 

I have recently 'discovered' my Systron Donner uWave synth puts out high order harmonics of its internal 10MHz source on the 10MHz ref input.  The internal ref (which is not used) runs all the time even when the unit is nominally off (standby mode).    Looking at the back-fed output of this on a scope, it consists of the high and low going edges of a square wave.   Probably explains why I've always had a high level of signals around the shack at any multiple of 10MHz right up to beyond UHF.  And why, when my master 10MHz source is used for critical applications like directly driving a synth chip, there are low level close in spurii I've never been able to account for.

The best solution I can think may well be to dive inside and disconnect the internal reference altogether - or disable its standby PSU.  Athough a LPF on the port may go some way to helping.

  


On Tue, 11 Jun 2019 at 20:44, alwyn.seeds1 <a.seeds@...> wrote:
Dear All,

If the connected items are not such as to back-feed digital rubbish, video amps work quite well.

I have a spare one, I’ll try to put on e-bay this w/e.

Regards,

Alwyn
_____________________________________________________

Alwyn Seeds, Director
SynOptika Ltd.,
114 Beaufort Street,
London,
SW3 6BU,
England.

Tel.: +44 (0) 20 7376 4110


SynOptika Ltd., Registered in England and Wales: No. 04606737
Registered Office: 114 Beaufort Street, London, SW3 6BU, United Kingdom.
_____________________________________________________

Re: Video amps- was 25MHz Xtal

Richard <richard@...>
 

You may be lucky and find the oven supply is separate from the oscillator supply, and if so take the oscillator supply from something that
is only on when the unit is switched on and leave the oven supply as is. that way it wont drift like the clappers when switched on.
Richard

On Tue, 2019-06-11 at 20:59 +0100, Andy G4JNT wrote:
I have recently 'discovered' my Systron Donner uWave synth puts out high order harmonics of its internal 10MHz source on the 10MHz ref input.  The internal ref (which is not used) runs all the time even when the unit is nominally off (standby mode).    Looking at the back-fed output of this on a scope, it consists of the high and low going edges of a square wave.   Probably explains why I've always had a high level of signals around the shack at any multiple of 10MHz right up to beyond UHF.  And why, when my master 10MHz source is used for critical applications like directly driving a synth chip, there are low level close in spurii I've never been able to account for.

The best solution I can think may well be to dive inside and disconnect the internal reference altogether - or disable its standby PSU.  Athough a LPF on the port may go some way to helping.

  


On Tue, 11 Jun 2019 at 20:44, alwyn.seeds1 <a.seeds@...> wrote:
Dear All,

If the connected items are not such as to back-feed digital rubbish, video amps work quite well.

I have a spare one, I’ll try to put on e-bay this w/e.

Regards,

Alwyn
_____________________________________________________

Alwyn Seeds, Director
SynOptika Ltd.,
114 Beaufort Street,
London,
SW3 6BU,
England.

Tel.: +44 (0) 20 7376 4110


SynOptika Ltd., Registered in England and Wales: No. 04606737
Registered Office: 114 Beaufort Street, London, SW3 6BU, United Kingdom.
_____________________________________________________

-- 
 Best wishes /73 
 Richard Bown
 
 Email : richard@...

 HTTP  :  http://www.g8jvm.com
 
 ######################################################################

 Ham Call: G8JVM . QRV: 50-432 MHz + Microwave 
 Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
 QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W, 
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
 OS: Linux Mint 19.1 x86_64 Tessa, on a Dell Inspiron N5030 laptop
 ######################################################################

Re: Re SG Labs 2.32Ghz transverter

Tom GM8MJV
 

Dave

Look at the current docs -   http://www.sg-lab.com/TR1300/tr1300.html

The pictures are much more obvious (Should be attached I hope)

Tom

--
73’s

Tom
GM8MJV (IO85)





On 11 Jun 2019, at 17:26, Dave via Groups.Io <drdavidnewman@...> wrote:

Thank you very much Ben and Tom for your advice. I think I have it now and understand what I have to do. That is very kind of you both.
73 Dave.
On 11 Jun 2019, at 16:47, Tom GM8MJV <tom@...> wrote:

Dave

Yes have done so - it’s very simple - move a smd 0 ohm resistor over

Think the latest manual on web site shows it clearly as I just did it a week ago

If need more details (and I doub’t you will) ask

Tom

--
73’s

Tom
GM8MJV (IO85)





On 11 Jun 2019, at 16:34, Dave via Groups.Io <drdavidnewman@...> wrote:

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)







Re: Re SG Labs 2.32Ghz transverter

Dave
 

I’ve done it now and was a lot easier than I thought so thanks for that.
73 Dave.


On 11 Jun 2019, at 22:29, Tom GM8MJV <tom@...> wrote:

Dave

Look at the current docs -   http://www.sg-lab.com/TR1300/tr1300.html

The pictures are much more obvious (Should be attached I hope)

Tom

--
73’s

Tom
GM8MJV (IO85)





On 11 Jun 2019, at 17:26, Dave via Groups.Io <drdavidnewman@...> wrote:

Thank you very much Ben and Tom for your advice. I think I have it now and understand what I have to do. That is very kind of you both.
73 Dave.
On 11 Jun 2019, at 16:47, Tom GM8MJV <tom@...> wrote:

Dave

Yes have done so - it’s very simple - move a smd 0 ohm resistor over

Think the latest manual on web site shows it clearly as I just did it a week ago

If need more details (and I doub’t you will) ask

Tom

--
73’s

Tom
GM8MJV (IO85)





On 11 Jun 2019, at 16:34, Dave via Groups.Io <drdavidnewman@...> wrote:

Hello,
I am trying to separate the tx/rx lines in the SG labs 2.32ghz transverter . I understand that some soldering is required to make a connection on the board but the instructions seem very vague. Has anyone done this mod?
73
Dave (G4GLT)







<PastedGraphic-1.png>

beaconspot

Dave - G4RQI
 

Hello...

 

I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?

 

73 David

Sent from Mail for Windows 10

 

Re: beaconspot

Neil Smith G4DBN
 

Some cluster software has a bug and truncates the precision, so when the originating cluster node sees the spot being looped back, instead of ignoring it, it thinks it is a new spot and displays it.  Only happens on certain beacons of course, depends on the frequency you spot.  If it is within X Hz of the boundary of a 10kHz increment, it is suppressed.  Not sure whose software is responsible, but a lot of authors didn’t realise anything existed above VHF.  Some cluster code chopped off the “10” from 10368.120 and the spot appeared as 368.120 with the digits “10” appended to the callsign.  That was fixed a while back, but the broken software which truncates the precision is still very prevalent.

I did try dropping Dirk a line to see if he had any ideas, but we really need to identify which software is doing it.

Neil G4DBN

On 12 Jun 2019, at 20:15, Dave - G4RQI <io93ir@...> wrote:

Hello...
 
I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?
 
73 David
Sent from Mail for Windows 10
 

Re: beaconspot

Neil Smith G4DBN
 


I just checked on one cluster on the web and it is even worse, truncating to the nearest MEGAHERTZ when you search. I’ll drop the author a line as I know who writes this one!
Neil G4DBN

2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:37:00 G0API 10369000 GB3LEX/B IO92IQ(TR)IO80XS 419


On 12 Jun 2019, at 21:20, Neil Smith G4DBN <neil@...> wrote:

Some cluster software has a bug and truncates the precision, so when the originating cluster node sees the spot being looped back, instead of ignoring it, it thinks it is a new spot and displays it.  Only happens on certain beacons of course, depends on the frequency you spot.  If it is within X Hz of the boundary of a 10kHz increment, it is suppressed.  Not sure whose software is responsible, but a lot of authors didn’t realise anything existed above VHF.  Some cluster code chopped off the “10” from 10368.120 and the spot appeared as 368.120 with the digits “10” appended to the callsign.  That was fixed a while back, but the broken software which truncates the precision is still very prevalent.

I did try dropping Dirk a line to see if he had any ideas, but we really need to identify which software is doing it.

Neil G4DBN

On 12 Jun 2019, at 20:15, Dave - G4RQI <io93ir@...> wrote:

Hello...
 
I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?
 
73 David
Sent from Mail for Windows 10
 


Re: beaconspot

Nicholas Shaxted
 

Hi Neil and Dave

I have just reviewed the cluster messaging for an entry from DL7VTX earlier this evening.

He also added a spot which reported the same issue.

The first entry is the correct entry (877) and GB3UJS and ON4KST seem to be involved, along with an IP

The second entry is incorrect (880) and seems to have GB3RDX and ON4KST involved.

 

Therefore, very tentatively, I would start to look a little closer at GB3RDX and its route.

 

CC11^10368877.0^OE1XGA/B^12-Jun-2019^2008^51s jn88eu - jo62tm^DL7VTX^24^GB7UJS^ON4KST-2^28^15^28^14^^^OE^DL^JN88^JO62^^2^48.5/-17^178.33.224.102^ (GB7DXS)

 

CC11^10368880.0^OE1XGA/B^12-Jun-2019^2008^51s jn88eu - jo62tm^DL7VTX^98^GB7RDX^ON4KST-2^28^15^28^14^^^OE^DL^JN88^JO62^^2^48.5/-17^^ (GB7DXS)

 

 

73

Nick – g4ogi

 

 

 

 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> On Behalf Of Neil Smith G4DBN via Groups.Io
Sent: Wednesday, June 12, 2019 9:29 PM
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] beaconspot

 

 

I just checked on one cluster on the web and it is even worse, truncating to the nearest MEGAHERTZ when you search. I’ll drop the author a line as I know who writes this one!

Neil G4DBN


2019-06-12 19:00:00       G4RQI   10369000             GB3LEX/B            IO92IQ(RS)IO93IR 55
2019-06-12 19:00:00       G4RQI   10369000             GB3LEX/B            IO92IQ(RS)IO93IR 55
2019-06-10 22:23:00       G4DBN 10369000             GB3LEX/B            IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:23:00       G4DBN 10369000             GB3LEX/B            IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:15:00       G4BAO 10369000             GB3LEX <rs>55S
2019-06-10 22:15:00       G4BAO 10369000             GB3LEX <rs>55S
2019-06-10 11:58:00       G4BAO 10369000             GB3LEX <rs> 52S
2019-06-10 11:58:00       G4BAO 10369000             GB3LEX <rs> 52S
2019-06-10 11:37:00       G0API   10369000             GB3LEX/B            IO92IQ(TR)IO80XS 419

 



On 12 Jun 2019, at 21:20, Neil Smith G4DBN <neil@...> wrote:

 

Some cluster software has a bug and truncates the precision, so when the originating cluster node sees the spot being looped back, instead of ignoring it, it thinks it is a new spot and displays it.  Only happens on certain beacons of course, depends on the frequency you spot.  If it is within X Hz of the boundary of a 10kHz increment, it is suppressed.  Not sure whose software is responsible, but a lot of authors didn’t realise anything existed above VHF.  Some cluster code chopped off the “10” from 10368.120 and the spot appeared as 368.120 with the digits “10” appended to the callsign.  That was fixed a while back, but the broken software which truncates the precision is still very prevalent.

 

I did try dropping Dirk a line to see if he had any ideas, but we really need to identify which software is doing it.

 

Neil G4DBN



On 12 Jun 2019, at 20:15, Dave - G4RQI <io93ir@...> wrote:

 

Hello...

 

I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?

 

73 David

Sent from Mail for Windows 10

 

 

 

Re: beaconspot

Dave - G4RQI
 

Hello Neil,

 

Thanks for the reply it will be interesting to see if can be resolved.

 

LEX and CAM are still audible on RS as I type this but not heard anything else tonight and certainly not any human activity.

 

73 David

Sent from Mail for Windows 10

 


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Wednesday, June 12, 2019 9:28:51 PM
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] beaconspot
 

I just checked on one cluster on the web and it is even worse, truncating to the nearest MEGAHERTZ when you search. I’ll drop the author a line as I know who writes this one!
Neil G4DBN

2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:37:00 G0API 10369000 GB3LEX/B IO92IQ(TR)IO80XS 419


On 12 Jun 2019, at 21:20, Neil Smith G4DBN <neil@...> wrote:

Some cluster software has a bug and truncates the precision, so when the originating cluster node sees the spot being looped back, instead of ignoring it, it thinks it is a new spot and displays it.  Only happens on certain beacons of course, depends on the frequency you spot.  If it is within X Hz of the boundary of a 10kHz increment, it is suppressed.  Not sure whose software is responsible, but a lot of authors didn’t realise anything existed above VHF.  Some cluster code chopped off the “10” from 10368.120 and the spot appeared as 368.120 with the digits “10” appended to the callsign.  That was fixed a while back, but the broken software which truncates the precision is still very prevalent.

I did try dropping Dirk a line to see if he had any ideas, but we really need to identify which software is doing it.

Neil G4DBN

On 12 Jun 2019, at 20:15, Dave - G4RQI <io93ir@...> wrote:

Hello...
 
I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?
 
73 David
Sent from Mail for Windows 10
 


Re: beaconspot

Richard <richard@...>
 

The last time this was flagged, tracing the spot back to where is get corrupted ended up with some Finnish
cluster s/w.
When the clusters in Europe were RF linked it was very easy to see where things went wrong.
But with internet linking its much harder, especially when duplicate paths exist between servers on different platforms.
Duplicate spots are removed, unless they have been changed,
Remember running a cluster server is a thankless task
Richard




On Wed, 2019-06-12 at 20:36 +0000, Dave - G4RQI wrote:

Hello Neil,

 

Thanks for the reply it will be interesting to see if can be resolved.

 

LEX and CAM are still audible on RS as I type this but not heard anything else tonight and certainly not any human activity.

 

73 David

Sent from Mail for Windows 10

 


From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Wednesday, June 12, 2019 9:28:51 PM
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] beaconspot
 

I just checked on one cluster on the web and it is even worse, truncating to the nearest MEGAHERTZ when you search. I’ll drop the author a line as I know who writes this one!
Neil G4DBN

2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:37:00 G0API 10369000 GB3LEX/B IO92IQ(TR)IO80XS 419


On 12 Jun 2019, at 21:20, Neil Smith G4DBN <neil@...> wrote:

Some cluster software has a bug and truncates the precision, so when the originating cluster node sees the spot being looped back, instead of ignoring it, it thinks it is a new spot and displays it.  Only happens on certain beacons of course, depends on the frequency you spot.  If it is within X Hz of the boundary of a 10kHz increment, it is suppressed.  Not sure whose software is responsible, but a lot of authors didn’t realise anything existed above VHF.  Some cluster code chopped off the “10” from 10368.120 and the spot appeared as 368.120 with the digits “10” appended to the callsign.  That was fixed a while back, but the broken software which truncates the precision is still very prevalent.

I did try dropping Dirk a line to see if he had any ideas, but we really need to identify which software is doing it.

Neil G4DBN

On 12 Jun 2019, at 20:15, Dave - G4RQI <io93ir@...> wrote:

Hello...
 
I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?
 
73 David
Sent from Mail for Windows 10
 


-- 
 Best wishes /73 
 Richard Bown
 
 Email : richard@...

 HTTP  :  http://www.g8jvm.com
 
 ######################################################################

 Ham Call: G8JVM . QRV: 50-432 MHz + Microwave 
 Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
 QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W, 
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
 OS: Linux Mint 19.1 x86_64 Tessa, on a Dell Inspiron N5030 laptop
 ######################################################################

Re: beaconspot

Neil Smith G4DBN
 

I ran the GB7YDX cluster for many long years back in AX25 days. Still have the scars…
One option if the broken code can’t be fixed would be to filter out coincident dupes within 10kHz on the affected bands only. Way better just to get the broken software fixed though, obviously.
Sadly I am 200km away from my radios for a while.
Neil G4DBN

On 12 Jun 2019, at 21:58, Richard <richard@...> wrote:

The last time this was flagged, tracing the spot back to where is get corrupted ended up with some Finnish
cluster s/w.
When the clusters in Europe were RF linked it was very easy to see where things went wrong.
But with internet linking its much harder, especially when duplicate paths exist between servers on different platforms.
Duplicate spots are removed, unless they have been changed,
Remember running a cluster server is a thankless task
Richard




On Wed, 2019-06-12 at 20:36 +0000, Dave - G4RQI wrote:
Hello Neil,
 
Thanks for the reply it will be interesting to see if can be resolved.
 
LEX and CAM are still audible on RS as I type this but not heard anything else tonight and certainly not any human activity.
 
73 David
Sent from Mail for Windows 10
 

From: UKMicrowaves@groups.io <UKMicrowaves@groups.io> on behalf of Neil Smith G4DBN <neil@...>
Sent: Wednesday, June 12, 2019 9:28:51 PM
To: UKMicrowaves@groups.io
Subject: Re: [UKMicrowaves] beaconspot
 

I just checked on one cluster on the web and it is even worse, truncating to the nearest MEGAHERTZ when you search. I’ll drop the author a line as I know who writes this one!
Neil G4DBN

2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-12 19:00:00 G4RQI 10369000 GB3LEX/B IO92IQ(RS)IO93IR 55
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:23:00 G4DBN 10369000 GB3LEX/B IO92IQ<RS>IO93NR 55s SCP JO02B
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 22:15:00 G4BAO 10369000 GB3LEX <rs>55S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:58:00 G4BAO 10369000 GB3LEX <rs> 52S
2019-06-10 11:37:00 G0API 10369000 GB3LEX/B IO92IQ(TR)IO80XS 419


On 12 Jun 2019, at 21:20, Neil Smith G4DBN <neil@...> wrote:

Some cluster software has a bug and truncates the precision, so when the originating cluster node sees the spot being looped back, instead of ignoring it, it thinks it is a new spot and displays it.  Only happens on certain beacons of course, depends on the frequency you spot.  If it is within X Hz of the boundary of a 10kHz increment, it is suppressed.  Not sure whose software is responsible, but a lot of authors didn’t realise anything existed above VHF.  Some cluster code chopped off the “10” from 10368.120 and the spot appeared as 368.120 with the digits “10” appended to the callsign.  That was fixed a while back, but the broken software which truncates the precision is still very prevalent.

I did try dropping Dirk a line to see if he had any ideas, but we really need to identify which software is doing it.

Neil G4DBN

On 12 Jun 2019, at 20:15, Dave - G4RQI <io93ir@...> wrote:

Hello...
 
I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?
 
73 David
Sent from Mail for Windows 10
 


-- 
 Best wishes /73 
 Richard Bown
 
 Email : richard@...

 HTTP  :  http://www.g8jvm.com
 
 ######################################################################

 Ham Call: G8JVM . QRV: 50-432 MHz + Microwave 
 Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W
 QRV 6mtrs 200W, 4mtrs 150W, 2mtrs 300W, 70cms 200W, 
Microwave 1296MHz 140W, 2320MHz 100W & 10368MHz 5W
 OS: Linux Mint 19.1 x86_64 Tessa, on a Dell Inspiron N5030 laptop
 ######################################################################


Re: beaconspot

Ralph
 

Good evening David,

 

It could be the access you are using I.e. the way they have set up the routing for various beacons causing a double entries- it happens a lot with me when I spot 2.3GHz beacons

At my age, I have forgotten the correct term used for these points of access. !

Their routing sometimes is not correct.  Try changing the access to the DX Cluster

Should help, I hope hi

 

 

 

Quel age !!

 

73

Ralph

 

Sent from Mail for Windows 10

 

From: Dave - G4RQI
Sent: 12 June 2019 20:15
To: ukmicrowaves@groups.io
Subject: [UKMicrowaves] beaconspot

 

Hello...

 

I’m sorry if this has been answered before... I have posted a couple of 3cm beacon spots this evening using https://www.beaconspot.uk/beaconsp.php but when I do the spot appears twice on the DxCluster. The frequency is correct for one of the spots but 5Khz is added to the 2nd spot. Does anyone know why?

 

73 David

Sent from Mail for Windows 10

 

 


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