Satdump software & wxsat reception

[sat-tv-fan]

Here's a good one using V2 this Morning

 

[sat-tv-fan]

Does anyone know how to widen the display ?

 

[Analoguesat]

Use a smaller sample rate in RECORDER-DEVICE should do it.

 

[Analoguesat]

Met M2-4 19/5/24 1350utc

As received apart from trimming the noise off the top & bottom of the image

 

[pontiend]

Just had a look at the scans.I spotted that one ,because the setting are the same for both Meteors I assumed the it was M2-3.Nice to know that I got one from M2-4.15.6 pm.The times that I state are the record folder times.
Edit The image is not cropped that is the limit of my scan range

 

[pontiend]

This is an odd one not sure which meteor it is I recon that it is M 2-4. 14. 5pm scan

 

[Terryl]

They released a new version of satdump, nothing in it helps with my spike problem.

If I tune to 137.1 MHz and turn the LNB gain all the way down I get a huge spike right on that frequency, if I tune to 137.9 MHz I get the same, sometimes it affects some satellites, other times it doesn't it does affect the Meteor satellites, so I'm kinda at a standstill on those satellites until I can figure out where these spikes are coming from.

Any of you using the Nooelec or RTL-SDR type dongles have this problem??

 

[Joolz]

They released a new version of satdump, nothing in it helps with my spike problem.

If I tune to 137.1 MHz and turn the LNB gain all the way down I get a huge spike right on that frequency, if I tune to 137.9 MHz I get the same, sometimes it affects some satellites, other times it doesn't it does affect the Meteor satellites, so I'm kinda at a standstill on those satellites until I can figure out where these spikes are coming from.

Any of you using the Nooelec or RTL-SDR type dongles have this problem??

This is the DC Offset spike. You can normally select a tuning offset so the software is looking at the spectrum away from this area. Some software can null the spike but it is difficult on a low cost dongle.

 

[Terryl]

I've tried offsetting the LO frequency but it doesn't help.

Is there another way that i'm missing??

 

[Joolz]

Normally you have an IQ Calibration function that will automatically null out the spike.

Look at IQ Correction? · Issue #427 · SatDump/SatDump

 

[sat-tv-fan]

Use a smaller sample rate in RECORDER-DEVICE should do it.

Makes no difference but when I change it and restart it keeps going back to 2.048 for some reason

 

[Analoguesat]

Makes no difference but when I change it and restart it keeps going back to 2.048 for some reason

You should be able to save the new settings somewhere in the settings tab iirc

 

[pontiend]

This is a decent scan .15.21 pm pass almost sure that it is M2-4.It looks lioke we are under all that cloud.

 

[Terryl]

I've been getting all black scans on both Meteors, has something changed??

 

[pontiend]

I am using 137.900 Mhz M2-x LRPT 72 k settings,same as m2-3

 

[Terryl]

Weird, I have the same settings as you and as before, and now get nothing but black images on the downloads from the Meteors.

I get great passes on the NOAA satellites.

 

[pontiend]

I don't know if you have the same problems as me.Satdump scans all passes most are fringe no chance of an image.I get black scans too.I always seem to get a good pass in the afternoon. Most are product.cbor about 551 bytes.

 

[Analoguesat]

The meteors need quite a bit more signal for a successful decode compared to NOAA. Any Meteor folder with a 551 bytes folder size when hovering the mouse over the folder gets deleted immediately - its an empty folder.

For the status of the Mets keep an eye on this page - its useful to flag up expected frequency & mode changes

Meteor M Series

Receiving the Meteor M2-Series and Meteor M2-2, M 2-3 AND Meteor M2-4 Status

usradioguy.com

 

[Terryl]

Yah that's all I see in the live folder, I just delete those, some just have an empty folder.

Here is the last pass on NOAA-18 just a few minuets ago.



Having some very nice weather right now, 73.3 degrees F (22.3 degrees C) and not a cloud in the sky. (at my location)

 

[Terryl]

What I have found out lately is when there is a NOAA satellite in the same pass timing ( 5 to 10 min ) the NOAA satellite will swamp the downlink from the Meteor satellite.