NovaSDR - UberSDR - WebSDR
We have 3 different WebSDR-Servers running at Rigi Scheidegg (JN47GA) in the Swiss Alps at 1'660m for the HAM community. All our HF WebSDR-Servers are connected to the Wellbrook Loop. When we transmit (FT8, CW, SSB) with our DX station, SDR reception is briefly disrupted.
All WebSDR-Servers (except the 2m WebSDR Server) are operated via a reverse proxy server in order to be protected against DDOS attacks.
- NovaSDR (PhantomSDR-Plus 2.0.0) 0-30 MHz in one Waterfall / Spectrum
- UberSDR 0 - 30 MHz in one Waterfall / Spectrum
- 2m WebSDR with one RSP1A SDR connected to a Diamond X-300-N Antenna
We are grateful for every donation - see PayPal donation button at the UberSDR-, NovaSDR- and 2m WebSDR-Server.
CATSync allows you to synchronize public WebSDR receivers with your real rig connected via CAT control to your computer and is supported by our NovaSDR- & UberSDR-Servers. Link to CatSync
All WebSDR-Servers located at JN47GA at 1'660m
UberSDR 0-30 MHz Server in one Browser Window
The first UberSDR-Server in Switzerland at 1'660m. The whole HF-Band 0 - 30 MHz in one Waterfall with one RX-888 MKII SDR connected to our Wellbrook Loop is running on a HP Elite Pro 800 G2 PC [Intel Core i7-6700 CPU @ 3.4 GHz, 16 GB Ram, 256 GB SSD-Disk, 7 USB-Ports, Ubuntu 22.04.4 (64 Bit)]
2m WebSDR Server (RSP1A)
WebSDR Server for 2m with one RSP1A SDR connected to our Diamond X-300-N Antenna with a pre-amp on the mast is running on a HP EliteDesk 800 G1 Mini Intel-PC with Debian 10.13 [Intel Core i5-4570T CPU @ 2.90 GHz x 4, 16 GB Memory, 250 GB SSD Disk, 1 USB 3.0 Port (RSP1A), Debian 10 Linux 64-Bit] Strong signals from the nearby (50m) HB9ZG relay-station (C4FM, DMR, DTSAR, TelePager) will cause some interference (horizotal lines).
NovaSDR (PhantomSDR-Plus 2.0.0) 0 - 30 MHz
The great public NovaSDR WebSDR-Server in Switzerland at 1'660m. The whole HF-Band 0 - 30 MHz in one Waterfall with one RX-888 MKII SDR connected to our Wellbrook Loop is running on a Lenovo ThinkCentre Mini PC. Installed 22. December 2025 on site. News: On 23. December 2025, CatSync will run with the NovaSDR https://catsyncsdr.wordpress.com/ in order to synch your transceiver with our NovaSDR at Rigi. We are grateful for every donation. [Intel Core i5-9700 CPU @ 1.8 GHz, 16 GB RAM, 128 GB SSD Disk (64-Bit), Display X11, Intel UHD Graphics 630 accelerator, Ubuntu 22.04 LTS]