# AWS Ground Station Site Capabilities
<a name="locations.capabilities"></a>

 To simplify your experience, AWS Ground Station determines a common set of capabilities for an antenna type and then deploys multiple antenna to a ground station location. Part of the onboarding steps ensures your satellite is compatible with the antenna types at a specific location. When you reserve a contact, you indirectly determine the antenna type used. This ensures your experience at a particular ground station location remains the same over time regardless of which antennas are being used. The specific performance of your contact will vary due to a wide variety of environmental concerns such as weather at the site. 

Currently, all sites support the following capabilities:

**Note**  
 Each row in the following table indicates an independent communication path, unless otherwise indicated. Duplicate rows exist to reflect our multi-channel capabilities that allow multiple communication paths to be used concurrently. 


| Capability Type | Frequency Range | Bandwidth Range | Polarization | Common Name | Notes | 
| --- |--- |--- |--- |--- |--- |
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  RHCP  |  X-band wideband downlink  |   This capability requires the use of the [AWS Ground Station Agent](https://docs.aws.amazon.com/ground-station/latest/gs-agent-ug).   This capability is not supported in Alaska 1 or Punta Arenas 1.   The aggregate bandwidth must not exceed 400MHz per polarization at each location.   All utilized frequency ranges must be non-overlapping.   | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  RHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  RHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  RHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  RHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  LHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  LHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  LHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  LHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  50 - 400 MHz  |  LHCP  | 
|  antenna-downlink  |  2200 - 2290 MHz  |  Up to 40 MHz  |  RHCP  |  S-band downlink  |  Only one polarization can be used at a time  | 
|  antenna-downlink  |  2200 - 2290 MHz  |  Up to 40 MHz  |  LHCP  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  Up to 40 MHz  |  RHCP  |  X-band narrowband downlink  |  Only one polarization can be used at a time  | 
|  antenna-downlink  |  7750 - 8500 MHz  |  Up to 40 MHz  |  LHCP  | 
|  antenna-uplink  |  2025 - 2110 MHz  |  Up to 40 MHz  |  RHCP  |  S-band uplink  |  Only one polarization can be used at a time EIRP 20-50 dBW  | 
|  antenna-uplink  |  2025 - 2110 MHz  |  Up to 40 MHz  |  LHCP  | 
|  antenna-uplink-echo  |  2025 - 2110 MHz  |  2 MHz  |  RHCP  |  Uplink echo  |  Matches antenna-uplink restrictions  | 
|  antenna-uplink-echo  |  2025 - 2110 MHz  |  2 MHz  |  LHCP  | 
|  antenna-downlink-demod-decode  |  7750 - 8500 MHz  |  Up to 500 MHz  |  RHCP  |  X-band demodulated and decoded downlink  |  | 
|  antenna-downlink-demod-decode  |  7750 - 8500 MHz  |  Up to 500 MHz  |  LHCP  |  | 
|  tracking  | N/A | N/A | N/A | N/A |  Support for auto-tracking and program tracking  | 

\$1 RHCP = right-handed circular polarization, and LHCP = left-handed circular polarization. For more information on polarization, see [Circular polarization](https://en.wikipedia.org/wiki/Circular_polarization).