Update modem-chain.md

Word choice fixes

Author: kellydevens

articles/orbital/modem-chain.md

@@ -12,13 +12,13 @@ ms.author: hrshelar
 
 # How to configure the RF chain
 
-You have the flexibility to choose between managed modem or virtual RF functionality using the Azure Orbital Ground Station service. These operational modes are specified on a per channel basis in the contact profile. See [ground station contact profile](concepts-contact-profile.md) to learn more about channels and links.
+You have the flexibility to choose between managed modem or virtual RF functionality using the Azure Orbital Ground Station service. These operational modes are specified on a per-channel basis in the contact profile. See [ground station contact profile](concepts-contact-profile.md) to learn more about channels and links.
 
 ## Managed modems vs virtual RF delivery
 
-We recommend taking advantage of Orbital Ground Station's managed modem functionality if possible. The modem is managed by the service and is inserted between your endpoint and the incoming or outgoing virtual RF stream for each pass. You can specify the modem setup using a modem configuration file or apply one of the in-built named modem configurations for commonly used public satellites such as Aqua. 
+We recommend taking advantage of Azure Orbital Ground Station's managed modem functionality, if possible. The modem is managed by the service and is inserted between your endpoint and the incoming or outgoing virtual RF stream for each pass. You can specify the modem setup using your modem configuration file or apply one of the in-built named modem configurations for commonly used public satellites such as Aqua. 
 
-Use virtual RF delivery if you wish to have tighter control on the modem setup or bring your own modem to the resource group. Orbital Ground Station will connect to your channel endpoint specified in the contact profile.
+Virtual RF delivery can be used if you wish to have tighter control on the modem setup or bring your own modem to the Azure resource group. Azure Orbital Ground Station will connect to your channel endpoint that is specified in the contact profile.
 
 ## How to configure your channels
 
@@ -32,37 +32,37 @@ The table below shows you how to configure the modem or virtual RF parameters.
 | decodingConfiguration     | Null (not used)                                                             |
 
 > [!NOTE]
-> Endpoint specified for the channel will apply to whichever option is selected. Please review [how to prepare network](prepare-network.md) for more details on setting up endpoints.  
+> The endpoint specified for the channel will apply to whichever option is selected. Please review [how to prepare network](prepare-network.md) for more details on setting up endpoints.  
 
-### For full-duplex cases
+### Full-duplex cases
 Use the same modem config file in uplink and downlink channels for full-duplex communications in the same band.
 
 ### How to input the modem config
-You can enter the modem config when creating a contact profile object or add it in later. Modifications to existing modem configs are also allowed.
+You can enter your existing modem config when creating a contact profile object or add it in later. Modifications to existing modem configs are also allowed.
 
-#### Entering the modem config using the API
+#### Entering the modem config using the Azure Orbital Ground Station API
 Enter the modem config as a JSON escaped string from the desired modem config file when using the API.
 
-#### Entering the modem config using the portal
+#### Entering the modem config using the Azure Portal
 Select 'Raw XML' and then **paste the modem config raw (without JSON escapement)**  into the field shown below when entering channel details using the portal. 
 
 :::image type="content" source="media/azure-ground-station-modem-config-portal-entry.png" alt-text="Screenshot of entering a modem configuration into the contact profile object." lightbox="media/azure-ground-station-modem-config-portal-entry.png":::
 
 ### Named modem configuration
-We currently support the following named modem configurations. 
+We currently support the following named modem configurations:  
 
 | **Public Satellite Service** | **Named modem string** | **Note** |
 |--|--|--|
-| Aqua Direct Broadcast | aqua_direct_broadcast | This is NASA AQUA's 15-Mbps direct broadcast service |
-| Aqua Direct Playback | aqua_direct_playback | This is NASA's AQUA's 150-Mbps direct broadcast service |
-| Terra Direct Broadcast | terra_direct_broadcast | This is NASA Terra's 13.125-Mbps direct broadcast service |
+| Aqua Direct Broadcast | aqua_direct_broadcast | This is NASA Aqua 15-Mbps direct broadcast service |
+| Aqua Direct Playback | aqua_direct_playback | This is NASA Aqua 150-Mbps direct broadcast service |
+| Terra Direct Broadcast | terra_direct_broadcast | This is NASA Terra 13.125-Mbps direct broadcast service |
 | SNPP Direct Broadcast | snpp_direct_broadcast | This is NASA SNPP 15-Mbps direct broadcast service |
 | JPSS-1 Direct Broadcast | jpss-1_direct_broadcast | This is NASA JPSS-1 15-Mbps direct broadcast service |
 
 > [!NOTE]
 > We recommend using the Aqua Direct Broadcast modem configuration when testing with Aqua.  
 > 
-> Orbital does not have control over the downlink schedules for these public satellites. NASA conducts their own operations which may interrupt the downlink availabilities.
+> Azure Orbital Ground Station does not have control over the downlink schedules for these public satellites. NASA conducts their own operations which may interrupt downlink availabilities.
 
  | **Spacecraft Title**    | **Aqua**  |**Suomi NPP**|**JPSS-1/NOAA-20**| **Terra** |
  | :---                    |  :----:   |    :----:   |     :----:       | :----:    |
@@ -72,7 +72,7 @@ We currently support the following named modem configurations.
  | `direction:`            | Downlink, | Downlink,   | Downlink,        | Downlink, |
  | `polarization:`         | RHCP      | RHCP        | RHCP             | RHCP      |
 
-#### Specifying a named modem configuration using the API
+#### Specifying a named modem configuration using the Azure Orbital Ground Station API
 Enter the named modem string into the demodulationConfiguration parameter when using the API.
 
 ```javascript
@@ -115,7 +115,7 @@ Enter the named modem string into the demodulationConfiguration parameter when u
 }
 ```
 
-#### Specifying a named modem configuration using the portal
+#### Specifying a named modem configuration using the Azure Portal
 
 Select 'Preset Named Modem Configuration'and chose a configuration as shown below when entering channel details using the portal.