OpenWebRx Plus running on a Raspberry Pi4 4GB.

You can change the centre frequency by right-clicking on the large round arrows in the frequency bar.
If you change band or centre frequency it affects all users on that device.

SDR Device 1: RTL-SDR Blog V4. Antenna: 2m/70cm 5 ele yagi, horizontally polorised on a rotator.
SDR Device 2: SDR Play RSP1A. Antenna: 2m/70cm 5 ele yagi, horizontally polorised on a rotator.
SDR Device 3: SDR Play RSP1A. Antenna: 30m (10Mhz) Inverted V dipole.
SDR Device 4: Airspy Mini. Antenna: 2m/70cm 5 ele yagi, horizontally polorised on a rotator.

Receiver is operated by: Colin M8YRT Website: www.m8yrt.co.uk Receiver No.1: M8YRT OWRX No.1