IS0GRB VHF WebSDR Receiver

located in Dolianova, 250m above sea-level. South Sardinia island, Italy, JM49OJ
is operated by Roberto IS0GRB, e-mail is0grb@gmail.com
It is running on a QuadCore Linux Ubuntu Server x64, 16GB RAM, SSD Disk 500GB
Turnstile Antenna 1/4 spacing + 20dB Preamplif. + 20m Cellflex 1/2'' cable + SDR interface GPSDO
http://websdr.is0grb.it:8902     Click here for Mobile version (Android/IOS) Firefox
This WebSDR has been activated on January 3, 2020
This is the IS0GRB VHF WebSDR project diagram
This WebSDR enable you to listen SSB DX, Local FM and Satellite Traffic
If you want to know which Satellites is receiving this WebSDR (JM49OJ):
Click here for the Sat Passes Amateur Satellite Tracking Online by LU7ABF
 See also IS0GRB QO-100 (Es'Hail-2) Geostationary Satellite WebSDR
 See also IS0GRB 1296MHz WebSDR
If you have sound problems with Google Chrome click or follow these steps:
1. Next to the url Google Chrome will indicate an icon "Unsafe Site"
2. Click on this item, select "Site settings" and Enable Audio for this site
3. Refresh now this page with F5. You can try instead to use Opera browser or Firefox
- See also this page to fix audio problems when using the Chrome and Safari browsers:
http://www.sdrutah.org/info/chromefix.html
 04/01/2020 - Video Filippo IZ5TEP listens to himself via satellite through this WebSDR
 22/01/2020 - Recording on this WebSDR of the Sked by Luca Parmitano from ISS with the Ontario Science Center in Toronto, Canada.

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  View:
Allow keyboard:
j k ← →: freq down/up (+shift/ctrl/alt faster)
[l c f] [u i o] [a s d]: [LSB2.5, CW, FM]  [USB2.4, USB2.5, USB2.7]  [USB-D1, USB-D2, USB-D3]
z / Z: center / zoom waterfall    g: enter frequency    q / w: mute / unmute audio

Insert your Spot:
Call of station that you are hearing (Only DX):   Comments, if any:
View the last 30 spots, or the entire list of spots (ctrl-click for new tab/window).

Last 10 spots from users of this WebSDR

Frequency: kHz   Mode:?

Or tune by clicking/dragging/scrollwheel on the frequency scale.
Waterfall view:   To enlarge the window spectrum (Hold Left CTRL and + or - key)
Speed:   Size:
View:  
       QRZ Callsign lookup:

 QRZCQ Callsign lookup:

   Callsign map + Locator: 		UTC
Memories:
Bandwidth:
? kHz @ -6dB; ? kHz @ -60dB
Volume:
DSP Noise Reduction:
Audio buffer:
Audio AGC Auto Manual
Gain:

[scale]

Sig?dBm  Peak?dBm

Noise?dBm  SNR?dB

Mute Squelch Autonotch High Boost
Signal strength plot:


This WebSDR is currently being used by ? user(s) simultaneously:      compact view

Chatbox:
This chatbox is intended to discuss the operation of the WebSDR.
The operators of this site disclaim any responsibility for text appearing in this chatbox.



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