This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::GroundStation::Config SpectrumConfig
<a name="aws-properties-groundstation-config-spectrumconfig"></a>

 Defines a spectrum. 

## Syntax
<a name="aws-properties-groundstation-config-spectrumconfig-syntax"></a>

To declare this entity in your Amazon CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-groundstation-config-spectrumconfig-syntax.json"></a>

```
{
  "[Bandwidth](#cfn-groundstation-config-spectrumconfig-bandwidth)" : FrequencyBandwidth,
  "[CenterFrequency](#cfn-groundstation-config-spectrumconfig-centerfrequency)" : Frequency,
  "[Polarization](#cfn-groundstation-config-spectrumconfig-polarization)" : String
}
```

### YAML
<a name="aws-properties-groundstation-config-spectrumconfig-syntax.yaml"></a>

```
  [Bandwidth](#cfn-groundstation-config-spectrumconfig-bandwidth): 
    FrequencyBandwidth
  [CenterFrequency](#cfn-groundstation-config-spectrumconfig-centerfrequency): 
    Frequency
  [Polarization](#cfn-groundstation-config-spectrumconfig-polarization): String
```

## Properties
<a name="aws-properties-groundstation-config-spectrumconfig-properties"></a>

`Bandwidth`  <a name="cfn-groundstation-config-spectrumconfig-bandwidth"></a>
 The bandwidth of the spectrum. Amazon Ground Station currently has the following bandwidth limitations:   
+ For `AntennaDownlinkDemodDecodeconfig`, valid values are between 125 kHz to 650 MHz.
+ For `AntennaDownlinkconfig`, valid values are between 10 kHz to 54 MHz.
+ For `AntennaUplinkConfig`, valid values are between 10 kHz to 54 MHz.
*Required*: No  
*Type*: [FrequencyBandwidth](aws-properties-groundstation-config-frequencybandwidth.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`CenterFrequency`  <a name="cfn-groundstation-config-spectrumconfig-centerfrequency"></a>
 The center frequency of the spectrum. Valid values are between 2200 to 2300 MHz and 7750 to 8400 MHz for downlink and 2025 to 2120 MHz for uplink.   
*Required*: No  
*Type*: [Frequency](aws-properties-groundstation-config-frequency.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Polarization`  <a name="cfn-groundstation-config-spectrumconfig-polarization"></a>
 The polarization of the spectrum. Valid values are `"RIGHT_HAND"` and `"LEFT_HAND"`. Capturing both `"RIGHT_HAND"` and `"LEFT_HAND"` polarization requires two separate configs.   
*Required*: No  
*Type*: String  
*Allowed values*: `LEFT_HAND | RIGHT_HAND | NONE`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Examples
<a name="aws-properties-groundstation-config-spectrumconfig--examples"></a>

### Create a SpectrumConfig
<a name="aws-properties-groundstation-config-spectrumconfig--examples--Create_a_SpectrumConfig"></a>

The following example creates a Ground Station `SpectrumConfig`

#### JSON
<a name="aws-properties-groundstation-config-spectrumconfig--examples--Create_a_SpectrumConfig--json"></a>

```
{
  "SpectrumConfig": {
    "Bandwidth": {
      "Value": 30,
      "Units": "MHz"
    },
    "CenterFrequency": {
      "Value": 7812,
      "Units": "MHz"
    },
    "Polarization": "RIGHT_HAND"
  }
}
```

#### YAML
<a name="aws-properties-groundstation-config-spectrumconfig--examples--Create_a_SpectrumConfig--yaml"></a>

```
SpectrumConfig:
  Bandwidth:
    Value: 30
    Units: MHz
  CenterFrequency:
    Value: 7812
    Units: MHz
  Polarization: RIGHT_HAND
```