HamSphere

HamSphere is a subscription based service which simulates the experience of working the HF amateur bands, it is billed as a "Virtual Amateur Radio Transceiver" with "100 Watts output", using SDR technology to simulate propagation effects on HF, the annual subscription is $40 per year according to HamSpheres 2022 newsletter.

Due to the nature of the service a licence is not required, but those with an existing licence can use their real callsign.