Quadrantids 2019

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pe1etr
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Quadrantids 2019

Post by pe1etr » 02 Jan 2019 08:14

Quadrantids peak 0220 UTC 4th Jan 2019.
Further maxima of radio meteors are possible 14 hours before and 9-12 hours after the main peak.

From International Meteor Organization 2019 Calendar.
www.imo.net

Peter
Blackpool

daveB
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Re: Quadrantids 2019

Post by daveB » 02 Jan 2019 12:56

Hopefully this meteor shower will give some results. It is circumpolar - and if I interpret the star charts correctly it is highest in the sky - almost overhead at around 6 am.
SDRPlay, AirSpyMini, RTL dongles, SB920s, Yamaha TX930. 5 ele compact yagi 20ft agl - 120 deg. FM5 - 80 deg, FM5 -180 deg. OIRT dipoleand 3-ele Moxon - 80 deg. Shielded magnetic loop 0.1-200 MHz

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 02 Jan 2019 13:35

I'm sure you will know this Dave and Peter, but for the benefit of others: Overhead is good for observation, but no good at all for radio. Meteors have to burn up on the horizon for maximum radio impact.

I plan to record as much of the event as possible, hard drive space permitting. i.e. depending on how many medium wave files I have recorded. This time, I will beam south-east and horizontally, instead of my usual vertical / north-east.

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 03 Jan 2019 12:08

I have managed to free up some space on my hard drive so I can record some overnight Quadrantids, but I am hoping there won't be a problem. Medium wave is currently showing better conditions and so I will be recording from my Perseus receiver at the same time - to the same hard drive. I hope this won't be a mistake. I will run a trial this afternoon to see.

The reason most of my hard drives are full is because they still have lots of Es recordings and I do not want to delete them until I have checked them.

I wondered if anybody else had tried recording two SDRs to the same hard drive?

satnipper
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Re: Quadrantids 2019

Post by satnipper » 03 Jan 2019 12:55

I think you will run into issues. SDR apps write a lot of data to the disk and there will be enormous contention between the two apps. No doubt memory buffering will come into play - how much memory do you have?

Can't each SDR record to a different disk?

Stuart

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 03 Jan 2019 13:15

I don't really have any spare discs. Only a 1TB for both purposes free. My other discs are as good as full.

I have 8GB memory. Jaguar runs happily at less than 1% CPU usage when recording. 13/14% when writing AUTOSCAN files.

I'm sure I've done this before. Can't remember what happened. I will be able to run the test in a n hour or two.

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Patrick73
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Re: Quadrantids 2019

Post by Patrick73 » 03 Jan 2019 17:32

1730z, I've been sitting on 143.050 (radar Graves) for half an hour : not a single ping ...
Patrick
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Chris Howles
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Re: Quadrantids 2019

Post by Chris Howles » 03 Jan 2019 20:29

BOB very pingy here at the mo, only short ones but lots of em.

EDIT - just IDed SR P1 87.9
Denon TU-1500RD X3, Rotel RT-955, Icom IC-R7100, Tescun PL390, Auna DAB
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daveB
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Re: Quadrantids 2019

Post by daveB » 04 Jan 2019 09:57

satnipper wrote:
03 Jan 2019 12:55
I think you will run into issues. SDR apps write a lot of data to the disk and there will be enormous contention between the two apps. No doubt memory buffering will come into play - how much memory do you have?

Can't each SDR record to a different disk?

Stuart
Taking the 2nd point first. That's how I run my set-up - each SDR has it's own 2Tb drive. That allows me the flexibility to record from two directions using separate aerials, or low band and high band at once. Or record from one drive whilst playing back recordings from the other drive, which is useful if there is no opening - but you are hoping to catch one.

As for recording two SDRs to one external drive. It seems to work with no dropped buffers for my PC (i-4460 / 8 Gb ram USB 3.) external drive). SDR 1 is an RSP1A at 8 Mbps sample rate - the other an Airspy mini at 6 Mmbps sample rate.

As for the Quarantids - lots of short pings from 14:30 to 18:30 on the 3rd beaming N-E - from Sweden and Denmark. Then from 1 am to 5 am on the 4th it was very lively with lots of short bursts at more than one a minute - from the East. A fair number throughout at RDS levels. Next recording session will be from 1 pm to 5 pm today (4th).
SDRPlay, AirSpyMini, RTL dongles, SB920s, Yamaha TX930. 5 ele compact yagi 20ft agl - 120 deg. FM5 - 80 deg, FM5 -180 deg. OIRT dipoleand 3-ele Moxon - 80 deg. Shielded magnetic loop 0.1-200 MHz

Tim Bucknall
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Re: Quadrantids 2019

Post by Tim Bucknall » 04 Jan 2019 10:22

heavy activity at 5am
better than i expected for an overhead shower
i've got 24 hours to play back at some point

some good trains just now so i started recording again but its dwindled to nothing
Rx: Burkhardt Reuter RDR54D1, Elad FDM-S2, Airspy HF+ w/ CLP 5130 Log P ant on rooftop rotator V/H polarization options. Pira P275 RDS analyser

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 04 Jan 2019 10:39

Sounds good.

Looks like I successfully recorded both MW and FM overnight, but I did manage to free up some space and record to separate drives, just in case.

Now, finding the time to listen. Hmm. Lots to do today, so I will set SDR Radio's Data File Analyser to go through the recordings while I am getting on with other stuff. I should be able to start compiling a log later, but it may take me a day or two.

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 04 Jan 2019 11:19

The first of five hour long files has been scanned. Lots of good pings and several ten or so second bursts. Should be a decent log.

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 04 Jan 2019 14:50

It looks like MS activity declined as the morning went on. I recorded between 03:00 and 09:00. My 03:00-04:00 and 04:00-05:00 files revealed a good level of activity, but my 05:00-06:00 files are considerably quieter.

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John Faulkner, Skegness
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Re: Quadrantids 2019

Post by John Faulkner, Skegness » 04 Jan 2019 23:00

I am half way through my first session. Logs here: http://www.fmlist.org/fm_logmap.php?dat ... &omid=2404 I am wondering if I can be bothered with more of this. It's the same stations, over and over again. Or is it me. Perhaps I am just turning into an impatient old git.

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