How are the trackings on Sondehub updated ?

[Patrick EGLOFF]

Just a silly question about the Sondehub tracking updates.

We are 2 hams here on the island who have a permanent working tracking system.

When a radiosonde is detected, most of the time both stations do receive the sonde an send the datas to Sondehub.

I noticed that one station does appear more often on the last received datas, even if it does not have the strongest signal.

It stays displayed for 15s, than the other station is displayed for 2 s and again replaced by the other station.

Both are rarely displayed together.

Thanks for any explanation.

73 Patrick TK5EP

[Mark Jessop]

It should show whoever uploaded that particular packet, however time delays between packets arriving at the sondehub DB, then onto the browser, can mean that only one station shows up.

Because most radiosondes transmit data every second, this is a fairly regular occurrence, hence the behaviour you are seeing.

73

Mark VK5QI

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[Simon Hammond]

I’ve noticed that on Sondehub Tracker, rdzTTGOsonde stations seem to take precedence over radiosonde_auto_rx stations.

Is this so, or just my impression?

Regards,

Simon, M7WWX

On 15 Jun 2022, at 21:36, Mark Jessop <vk...@rfhead.net> wrote:



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[Patrick EGLOFF]

Thanks for the answer, but it is still unclear to me. The datas from my received are rarely displayed on Sondehub compared to my friends receiver.
They do show up from time to time and only about 2 seconds, being replaced by the others. Checking on my receivers Web server, it receives continously and often with a better signal.

Never mind, I was just curious.. :-)

73 Patrick TK5EP

[Michaela Wheeler]

If they happen to upload every 15 seconds at 00:00:16 and you upload at 00:00:14 then they'll show up for longer as your next upload will be at 00:00:29. We don't sort on SNR or anything like that and really it doesn't matter. We have ideas on how this display could be better but haven't devoted any time for it. Data has to be batched up to keep sondehub affordable to keep running.

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  Michaela Wheeler

  mich...@michaela.lgbt

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[Patrick EGLOFF]

Thanks,

That makes sense..
Now I have to shift my clock to rank up if I want to satisfy my ego...    :-))

73, Patrick TK5EP.

[Michaela Wheeler]

The number of received packets is really more important. If you have a unix system, jq installed and sondehub cli (pip3 install sondehub) you can run something like this to get frame counts.

mwheeler@foxbook % sondehub --download T2310157  | jq -r '.uploader_callsign' | sort  | uniq -c | sort -n

 196 VK3PEG

 328 VK3TNU2_AUTO_RX

4892 VK3TMC

5425 VK3GIS

5683 VK3TWC

5720 VK3BQZ_AUTO_RX

5923 VK3YY

6411 Bigears

6461 VK3PZ

6583 #HAB1_AUTO_RX

6696 Yarra_Valley

6811 Noddy_._

7054 VK3ZYC__RX

7281 VK3BQ

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  Michaela Wheeler

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