XM
Car radio subscription
XM is a prefix indicating extended or extra capability, most familiar from SiriusXM, the satellite radio service.
In military and automotive contexts, XM often designates experimental or enhanced models: the XM rifle series, the Cadillac XM.
The letters suggest something beyond the standard version.
Night's most luminous point
- channelsPaths for transmission
- subscriptionPaid recurring access
- premiumAdded cost for better
- streamingReal-time digital delivery
receiver · tuner · broadcast · programming · news · sports · comedy · traffic
Sending of information
- frequencyRate of recurrence
- modulationVarying signals to transmit
- signalsConveyed indications
- bandwidthData transmission capacity
antenna · receiver · tuner · waveform · broadcasting · amplitude · shortwave · transceiver
Sirius
Night's most luminous point
- channelsPaths for transmission
- subscriptionPaid recurring access
- premiumAdded cost for better
streaming · receiver · tuner · broadcast · programming · news · sports · comedy · traffic · weather
transmission
Sending of information
- frequencyRate of recurrence
- modulationVarying signals to transmit
- signalsConveyed indications
bandwidth · antenna · receiver · tuner · waveform · broadcasting · amplitude · shortwave · transceiver · wireless
Unlicensed or unpaid airwaves
commercial radio · regional radio · public radio · NPR · community radio
- Sirius XMSubscription satellite broadcaster