# Radio Navigation<no value>

{{< callout context="caution" title="IMPORTANT!" icon="outline/alert-triangle" >}}

Token Variables - along with the [Gauge API](../gauge-api/) - have been deprecated in Microsoft Flight Simulator 2024 in favour of the new [Vars API](../../vars-api/vars-api/) and [Event API](../../event-api/event-api/), which work with the more extensive and supported [Simulation Variables](../../../simvars/simulation-variables/) and [Key Events](../../../key-events/key-events/).

{{< /callout >}}

This page lists the available **radio navigation** [Token Variables](token-variables/) for use when creating gauges using {{< glossterm >}}wasm{{< /glossterm >}} / C++.

 

 

### ADF

{{< table-wrapper >}}

| Parameters                                                        | Universal Var Member | Description                                                                                                                                                          |
|-------------------------------------------------------------------|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `ADF_500_HZ_TUNABLE`         | `n` (FLOAT)          | Specifies the tuneable {{< glossterm >}}adf{{< /glossterm >}} frequency.                                                                                              |
| `ADF_CARD_RADIAL`               | `n` (FLOAT)          | Specifies the {{< glossterm >}}adf{{< /glossterm >}} card cardinal direction, in degrees from 0 to 360.                                                               |
| `ADF_EXTENDED_FREQUENCY` | `n` (FLOAT)          | Specifies the {{< glossterm >}}adf{{< /glossterm >}} extended frequency, [Frequency BCD16](../../../simvars/simulation-variable-units/#Frequency%20BCD16) encoded. |
| `ADF_FREQUENCY`                   | `n` (FLOAT)          | Specifies the {{< glossterm >}}adf{{< /glossterm >}} frequency, [Frequency BCD16](../../../simvars/simulation-variable-units/#Frequency%20BCD16) encoded.          |
| `ADF_IDENTITY`                     | `p` (PVOID)          | Pointer to a string with the {{< glossterm >}}adf{{< /glossterm >}} identity.                                                                                         |
| `ADF_MORSE_IDENT`               | `b` (BOOL)           | This will be TRUE (1) if there is a morse signal, FALSE (0) otherwise.                                                                                               |
| `ADF_NEEDLE`                         | `n` (FLOAT)          | The {{< glossterm >}}adf{{< /glossterm >}} needle position, expressed as 16-bit pseudo-degrees.                                                                       |
| `ADF_SIGNAL_STRENGTH`       | `n` (FLOAT)          | The {{< glossterm >}}adf{{< /glossterm >}} signal strength where 0 is no signal, and 256 and above is a good signal.                                                  |
| `ADF_SOUND_TOGGLE`             | `b` (BOOL)           | Whether the {{< glossterm >}}adf{{< /glossterm >}} audio is on (TRUE, 1) or off (FALSE, 0).                                                                           |
| `ADF_VOLUME`                         | `n` (FLOAT)          | The volume of the {{< glossterm >}}adf{{< /glossterm >}} output, expressed as a {{< glossterm >}}percent_over_100{{< /glossterm >}}.                                   |

{{< /table-wrapper >}}


 

 

### ATC

{{< table-wrapper >}}

| Parameters                                                                                        | Universal Var Member | Description                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------|----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `ATC_AIRPORT_IS_TOWERED`                                 | `b` (BOOL)           | This will be TRUE (1) if the airport is controlled, or FALSE (0) otherwise.                                                                                               |
| `ATC_CLEARED_LANDING`                                       | `b` (BOOL)           | This will be TRUE (1) if the ATC has cleared the aircraft for landing, or FALSE (0) otherwise.                                                                            |
| `ATC_CLEARED_TAKEOFF`                                       | `b` (BOOL)           | This will be TRUE (1) if the ATC has cleared the aircraft for takeoff, or FALSE (0) otherwise.                                                                            |
| `ATC_CLEARED_TAXI`                                             | `b` (BOOL)           | This will be TRUE (1) if the ATC has cleared the aircraft for taxi, or FALSE (0) otherwise.                                                                               |
| `ATC_RUNWAY_AIRPORT_NAME`                               | `p` (PVOID)          | A pointer to the name of the airport of the runway assigned by the ATC.                                                                                                   |
| `ATC_RUNWAY_DISTANCE`                                       | `n` (FLOAT)          | This value represents the distance between the aircraft and the center of the runway selected by the ATC. Value is in meters.                                             |
| `ATC_RUNWAY_END_DISTANCE`                               | `n` (FLOAT)          | This value corresponds to the horizontal distance between the aircraft and the end of the runway selected by the ATC. Value is in meters.                                 |
| `ATC_RUNWAY_HEADING_DEGREES_TRUE`               | `n` (FLOAT)          | This value represents the true heading of the runway selected by the ATC, in degrees.                                                                                     |
| `ATC_RUNWAY_LENGTH`                                           | `n` (FLOAT)          | The length of the runway assigned by the ATC, in meters. Will return -1 if no runway is assigned.                                                                         |
| `ATC_RUNWAY_RELATIVE_POSITION_X`                 | `n` (FLOAT)          | This value corresponds to the aircraft's main gear relative X (transverse) axis position on the runway selected by the ATC. Value is in meters.                           |
| `ATC_RUNWAY_RELATIVE_POSITION_Y`                 | `n` (FLOAT)          | This value corresponds to the aircraft's main gear relative Y (height) axis position on the runway selected by the ATC. Value is in meters.                               |
| `ATC_RUNWAY_RELATIVE_POSITION_Z`                 | `n` (FLOAT)          | This value corresponds to the aircraft's main gear relative Z (longitudinal) axis position on the runway selected by the ATC. Value is in meters.                         |
| `ATC_RUNWAY_SELECTED`                                       | `n` (BOOL)           | Whether the ATC has pre-selected a runway for the aircraft (TRUE, 1) or not (FALSE, 0).                                                                                   |
| `ATC_RUNWAY_START_DISTANCE`                           | `n` (FLOAT)          | This value corresponds to the horizontal distance between the aircraft and the start of the runway selected by the ATC. Value is in meters.                               |
| `ATC_RUNWAY_TDPOINT_RELATIVE_POSITION_X` | `n` (FLOAT)          | This value represents the aircraft main gear relative X (transverse) axis position according to the aiming point of the runway selected by the ATC. Value is in meters.   |
| `ATC_RUNWAY_TDPOINT_RELATIVE_POSITION_Y` | `n` (FLOAT)          | This value represents the aircraft main gear relative Y (height) axis position according to the aiming point of the runway selected by the ATC. Value is in meters.       |
| `ATC_RUNWAY_TDPOINT_RELATIVE_POSITION_Z` | `n` (FLOAT)          | This value represents the aircraft main gear relative Z (longitudinal) axis position according to the aiming point of the runway selected by the ATC. Value is in meters. |
| `ATC_RUNWAY_WIDTH`                                             | `n` (FLOAT)          | The width of the runway assigned by the ATC, in meters. Will return -1 if no runway is assigned.                                                                          |
| `SLOPE_TO_ATC_RUNWAY`                                       | `n` (FLOAT)          | The slope between the aircraft and the expected landing position of the runway, in radians. Will return 0 if no runway is assigned.                                       |

{{< /table-wrapper >}}


 

 

### Beacons

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>MARKER_BEACON_SENSITIVITY_HIGH</code></td><td><code>b</code> (BOOL)</td><td>Whether the Marker Beacon is in High Sensitivity mode (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="even"><td><code>MARKER_BEACON_STATE</code></td><td><p><code>e</code> (ENUM)</p><ol><li>0 = no beacon</li><li>1 = outer</li><li>2 = middle</li><li>3 = inner</li></ol></td><td>The marker beacon state.</td></tr><tr class="odd"><td><code>MARKER_BEACON_TEST_MUTE</code></td><td><code>b</code> (BOOL)</td><td>Whether the Marker Beacon is in test/mute mode (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="even"><td><code>MARKER_SOUND_TOGGLE</code></td><td><code>n</code> (FLOAT)</td><td>Whether the Marker Beacon sound is on (TRUE, 1) or not (FALSE, 0).</td></tr></tbody></table>

 

 

### COM

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>COM_ACTIVE_FREQUENCY</code></td><td><code>n</code> (FLOAT)</td><td>The COM active frequency, <a href="../../../simvars/simulation-variable-units/#Frequency%20BCD16">Frequency BCD16</a> encoded.</td></tr><tr class="even"><td><code>COM_BOTH_RECEIVE</code></td><td><code>n</code> (FLOAT)</td><td>Whether the audio is being recieved on both COMs (TRUE , 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><p><code>COM_FREQUENCY</code></p><p><code>COM2_FREQUENCY</code></p></td><td><code>n</code> (FLOAT)</td><td>Specifies COM 1/2 radio frequency, <a href="../../../simvars/simulation-variable-units/#Frequency%20BCD16">Frequency BCD16</a> encoded.</td></tr><tr class="even"><td><code>COM_RADIO_25_KHZ_TUNABLE</code></td><td><code>b</code> (BOOL)</td><td>Whether the COM radio is tuneable (TRUE , 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><code>COM_RECEIVE</code></td><td><code>b</code> (BOOL)</td><td>Whether the aircraft is receiving on this COM channel (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="even"><td><code>COM_RECEIVE_EX1</code></td><td><code>b</code> (BOOL)</td><td>Whether the aircraft is receiving on this COM channel (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><p><code>COM_STANDBY_FREQUENCY</code></p><p><code>COM_STBY_FREQUENCY</code></p><p><code>COM2_STBY_FREQUENCY</code></p></td><td><code>n</code> (FLOAT)</td><td>Specifies COM 1/2 radio standby frequency, <a href="../../../simvars/simulation-variable-units/#Frequency%20BCD16">Frequency BCD16</a> encoded.</td></tr><tr class="even"><td><code>COM_VOLUME</code></td><td><code>n</code> (FLOAT)</td><td>The volume of the COM radio, as a percentage between 0 and 100.</td></tr><tr class="odd"><td><p><code>COM1_AUTOSWITCH_ON</code></p><p><code>COM2_AUTOSWITCH_ON</code></p></td><td><code>b</code> (BOOL)</td><td>Whether the aircraft COM switch 1/2 is on (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="even"><td><p><code>COM1_STORED_FREQUENCY</code></p><p><code>COM2_STORED_FREQUENCY</code></p><p><code>COM3_STORED_FREQUENCY</code></p></td><td><code>n</code> (FLOAT)</td><td>Specifies COM 1/2/3 stored frequency, <a href="../../../simvars/simulation-variable-units/#Frequency%20BCD16">Frequency BCD16</a> encoded.</td></tr><tr class="odd"><td><p><code>COM1_TRANSMIT_SELECT</code></p><p><code>COM2_TRANSMIT_SELECT</code></p></td><td><code>b</code> (BOOL)</td><td>Audio panel COM transmit state, either on (TRUE, 1) or off (FALSE, 0).</td></tr></tbody></table>

 

 

### DME

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>CURRENT_DME</code></td><td><p><code>e</code> (ENUM)</p><ol><li>0 = DME1</li><li>1 = DME2</li></ol></td><td>The currently selected <a href="#" class="glossterm">DME</a>.</td></tr><tr class="even"><td><code>CURRENT_DME_DISTANCE</code></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a> (1 or 2) distance, in <a href="#" class="glossterm">nm</a>.</td></tr><tr class="odd"><td><code>CURRENT_DME_SPEED</code></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a> (1 or 2) speed, in <a href="#" class="glossterm">Knots</a>.</td></tr><tr class="even"><td><code>CURRENT_DME_MIN</code></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a> (1 or 2) minutes until arriving.</td></tr><tr class="odd"><td><p><code>DME1_DISPLAY_TYPE</code></p><p><code>DME2_DISPLAY_TYPE</code></p></td><td><code>b</code> (BOOL)</td><td><p>The type of display for the DME, either TRUE (1) for the speed, in knots, or FALSE (0) for the distance readout.</p></td></tr><tr class="even"><td><p><code>DME1_DISTANCE</code></p><p><code>DME2_DISTANCE</code></p></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a> (1 or 2) distance readout.</td></tr><tr class="odd"><td><p><code>DME1_MORSE_IDENT</code></p><p><code>DME2_MORSE_IDENT</code></p></td><td><code>b</code> (BOOL)</td><td>This will be TRUE (1) if there is a morse signal, FALSE (0) otherwise.</td></tr><tr class="even"><td><p><code>DME1_SPEED</code></p><p><code>DME2_SPEED</code></p></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a> (1 or 2) speed readout.</td></tr><tr class="odd"><td><code>DME_SOUND_TOGGLE</code></td><td><code>n</code> (FLOAT)</td><td>Audio panel <a href="#" class="glossterm">DME</a> audio state, either on (TRUE, 1) or off (FALSE, 0).</td></tr></tbody></table>

 

 

### GPS

{{< table-wrapper >}}

| Parameters                                                                      | Universal Var Member | Description                                                                                                                                                    |
|---------------------------------------------------------------------------------|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `GPS_DRIVES_NAV1`                             | `b` (BOOL)           | Whether the {{< glossterm >}}gps{{< /glossterm >}} is driving the Nav 1 indicator (TRUE, 1) or not (FALSE, 0).                                                  |
| `GPS_FLAGS`                                         | `f` (FLAGS)          | {{< glossterm >}}gps{{< /glossterm >}} flag settings. See `GPS_FLAG_` in GAUGES.h.                                                                              |
| `GPS_FLIGHTPLAN_TOTAL_DISTANCE` | `n` (FLOAT)          | The {{< glossterm >}}gps{{< /glossterm >}} flightplan total distance in meters.                                                                                 |
| `GPS_GROUND_HEADING`                       | `n` (FLOAT)          | The current {{< glossterm >}}gps{{< /glossterm >}} true heading, in Radians (0 - 2PI).                                                                          |
| `GPS_GROUND_SPEED`                           | `n` (FLOAT)          | The current ground speed, in meters per second.                                                                                                                |
| `GPS_GROUND_TRACK`                           | `n` (FLOAT)          | The current {{< glossterm >}}gps{{< /glossterm >}} ground track (heading + magvar, magnetic yaw), in Radians (0 - 2PI).                                         |
| `GPS_MAGVAR`                                       | `n` (FLOAT)          | The current {{< glossterm >}}gps{{< /glossterm >}} magnetic variation, in radians.                                                                              |
| `GPS_OBS_ACTIVE`                               | `b` (BOOL)           | Whether the OBS mode is currently active (TRUE, 1) or not (FALSE, 0). If TRUE, this will disable the automatic sequencing of waypoints in the GPS flight plan. |
| `GPS_OBS_VALUE`                                 | `n` (FLOAT)          | The current course set for the OBS, in degrees.                                                                                                                |
| `GPS_POSITION_ALT`                           | `n` (FLOAT)          | The current {{< glossterm >}}gps{{< /glossterm >}} altitude, in meters.                                                                                         |
| `GPS_POSITION_LAT`                           | `n` (FLOAT)          | The current {{< glossterm >}}gps{{< /glossterm >}} latitude, in latitude meters (`meters * (360 / 40007000)`).                                                  |
| `GPS_POSITION_LON`                           | `n` (FLOAT)          | The current {{< glossterm >}}gps{{< /glossterm >}} longitude, in radians.                                                                                       |
| `GPS_WP_BEARING`                               | `n` (FLOAT)          | The magnetic bearing to waypoint the next heading, in radians.                                                                                                 |
| `GPS_WP_CROSS_TRK`                           | `n` (FLOAT)          | The cross track distance, in meters.                                                                                                                           |
| `GPS_WP_DISTANCE`                             | `n` (FLOAT)          | Meters to next waypoint.                                                                                                                                       |
| `GPS_WP_NEXT_ALT`                             | `n` (FLOAT)          | The altitude of next waypoint, in meters.                                                                                                                      |
| `GPS_WP_NEXT_LAT`                             | `n` (FLOAT)          | The latitude of next waypoint, in degrees.                                                                                                                     |
| `GPS_WP_NEXT_LON`                             | `n` (FLOAT)          | The longitude of next waypoint, in degrees.                                                                                                                    |
| `GPS_WP_PREV_ALT`                             | `n` (FLOAT)          | The altitude of previous waypoint, in meters.                                                                                                                  |
| `GPS_WP_PREV_LAT`                             | `n` (FLOAT)          | The latitude of previous waypoint, in degrees.                                                                                                                 |
| `GPS_WP_PREV_LON`                             | `n` (FLOAT)          | The longitude of previous waypoint, in degrees.                                                                                                                |
| `GPS_WP_REQ_HDG`                               | `n` (FLOAT)          | The required heading, magnetic, from the prev wayppoint to next waypoint, in radians.                                                                          |
| `GPS_WP_STRING`                                 | `p` (PVOID)          | The name of the next waypoint.                                                                                                                                 |
| `GPS_WP_TRUE_BEARING`                     | `n` (FLOAT)          | The true bearing to the waypoint, in degrees.                                                                                                                  |
| `GPS_WP_TRUE_REQ_HDG`                     | `n` (FLOAT)          | The required true heading to the waypoint, in degrees.                                                                                                         |

{{< /table-wrapper >}}


 

 

### HSI

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>HSI_BEARING</code></td><td><code>n</code> (FLOAT)</td><td>This will return the HSI needle bearing, in degrees.</td></tr><tr class="even"><td><code>HSI_BEARING_VALID</code></td><td><code>b</code> (BOOL)</td><td>This will be TRUE (1) if the <code>HSI_BEARING</code> variable contains valid data, or FALSE (0) otherwise.</td></tr><tr class="odd"><td><code>HSI_DESIRED_HEADING_NEEDLE</code></td><td><code>n</code> (FLOAT)</td><td>The HSI desired heading, in degrees.</td></tr><tr class="even"><td><code>HSI_DISTANCE</code></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a>/<a href="#" class="glossterm">GPS</a> distance in <a href="#" class="glossterm">nm</a>.</td></tr><tr class="odd"><td><code>HSI_HORIZONTAL_NEEDLE</code></td><td><code>n</code> (FLOAT)</td><td>The HSI horizontal needle position between -1 and 1, which corresponds to -0.7º and 0.7º.</td></tr><tr class="even"><td><code>HSI_HORIZONTAL_VALID</code></td><td><code>b</code> (BOOL)</td><td>Whether the HSI signal is valid (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><code>HSI_OBI_NEEDLE</code></td><td><code>n</code> (FLOAT)</td><td>The OBS needle setting, in degrees.</td></tr><tr class="even"><td><code>HSI_SIGNAL_LOCALISER</code></td><td><code>b</code> (BOOL)</td><td>Whether the station is a localiser (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><code>HSI_SPEED</code></td><td><code>n</code> (FLOAT)</td><td>The <a href="#" class="glossterm">DME</a>/<a href="#" class="glossterm">GPS</a> speed, in <a href="#" class="glossterm">Knots</a>.</td></tr><tr class="even"><td><code>HSI_STATION_NAME</code></td><td><code>p</code> (PVOID)</td><td>The HSI station name.</td></tr><tr class="odd"><td><code>HSI_TF_FLAG</code></td><td><p><code>e</code> (ENUM)</p><ol><li>0 = Off</li><li>1 = TO</li><li>2 = FROM</li></ol></td><td>The HSI to/from flag setting.</td></tr><tr class="even"><td><code>HSI_VERTICAL_VALID</code></td><td><code>b</code> (BOOL)</td><td>Whether the NAV flag is on (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><code>HSI_VERTICAL_NEEDLE</code></td><td><code>n</code> (FLOAT)</td><td><p>The HSI vertical needle position. The value returned will be between -1 and 1 (corresponding to -10º and 10º) if VOR, or between -2.5º and 2.5º if localizer, or between -5<a href="#" class="glossterm">nm</a> and 5<a href="#" class="glossterm">nm</a> if GPS.</p></td></tr></tbody></table>

 

 

### NAV

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>NAV_VOLUME</code></td><td><code>n</code> (FLOAT)</td><td>The volume of the NAV Radio, expressed as a percentage from 0 to 100.</td></tr><tr class="even"><td><p><code>NAV1_AUTOSWITCH_ON</code></p><p><code>NAV2_AUTOSWITCH_ON</code></p></td><td><code>b</code> (BOOL)</td><td>Whether the NAV1/2 autoswitch is on (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><p><code>NAV1_COMMNAV_TEST</code></p><p><code>NAV2_COMMNAV_TEST</code></p></td><td><code>b</code> (BOOL)</td><td>This will be TRUE (1) if the NAV1/2 COM system is working and FALSE (0) if it is not.</td></tr><tr class="even"><td><p><code>NAV1_FREQUENCY</code></p><p><code>NAV2_FREQUENCY</code></p></td><td><code>n</code> (FLOAT)</td><td>The NAV1/2 active frequency, expressed as a <a href="../../../simvars/simulation-variable-units/#Frequency%20BCD16">Frequency BCD16</a> value.</td></tr><tr class="odd"><td><p><code>NAV1_MORSE_IDENT</code></p><p><code>NAV2_MORSE_IDENT</code></p></td><td><code>b</code> (BOOL)</td><td>This will be TRUE (1) if there is a morse signal, and FALSE (0) otherwise.</td></tr><tr class="even"><td><p><code>NAV1_SOUND_TOGGLE</code></p><p><code>NAV2_SOUND_TOGGLE</code></p></td><td><code>n</code> (FLOAT)</td><td>This will be TRUE (1) if NAV1/2 audio is enabled, and FALSE (0) otherwise.</td></tr><tr class="odd"><td><p><code>NAV1_STBY_FREQUENCY</code></p><p><code>NAV2_STBY_FREQUENCY</code></p></td><td><code>n</code> (FLOAT)</td><td>The NAV1/2 standby frequency, expressed as a <a href="../../../simvars/simulation-variable-units/#Frequency%20BCD16">Frequency BCD16</a> value.</td></tr><tr class="even"><td><p><code>NAV1_VOR_RADIAL</code></p><p><code>NAV2_VOR_RADIAL</code></p></td><td><code>n</code> (FLOAT)</td><td>The rdial that the aircraft is on, in radians.</td></tr><tr class="odd"><td><code>TACAN_DRIVES_NAV1</code></td><td><code>b</code> (BOOL)</td><td>Whether the TACAN is driving the Nav 1 indicator (TRUE, 1) or not (FALSE, 0).</td></tr></tbody></table>

 

 

### Pilot

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>PILOT_TRANSMITTER_TYPE</code></td><td><p><code>e</code> (ENUM)</p><ol><li>0 = COM1</li><li>1 = COM2</li><li>2 = COM3</li><li>3 = TEL</li><li>4 = NONE</li></ol></td><td>The channel on which the pilot is transmitting.</td></tr><tr class="even"><td><code>PILOT_TRANSMITTING</code></td><td><code>b</code> (BOOL)</td><td>Whether the pilot is transmitting (TRUE, 1) or not (FALSE, 0).</td></tr></tbody></table>

 

 

### Radio

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><code>RADIO_HEIGHT</code></td><td><code>n</code> (FLOAT)</td><td>The radar altitude, in meters.</td></tr><tr class="even"><td><code>RADIO_MORSE_IDENT_STATES</code></td><td><code>f</code> (FLAGS)</td><td><p>The radio morse state, formed using these flags:</p><ol><li>1: VOR1 (Bit 1)</li><li>2: VOR2 (Bit 2)</li><li>4: DME1 (Bit 3)</li><li>8: DME2 (Bit 4)</li><li>16: ADF (Bit 5)</li></ol></td></tr><tr class="odd"><td><code>RADIO_STACK_VISIBLE</code></td><td><code>b</code> (BOOL)</td><td>Whether the radio stack is visible (TRUE, 1) or not (FALSE, 0).</td></tr></tbody></table>

 

 

### VOR

<table><thead><tr class="header"><th>Parameters</th><th>Universal Var Member</th><th>Description</th></tr></thead><tbody><tr class="odd"><td><p><code>VOR1_BACK_COURSE_FLAGS</code></p><p><code>VOR2_BACK_COURSE_FLAGS</code></p></td><td><code>f</code> (FLAGS)</td><td><p>The status of VOR1/2, comprised from the following:</p><ol><li>BIT0:[index] Back course available</li><li>BIT1:[index] Localizer tuned in</li><li>BIT2:[index] On course</li><li>BIT7:[index] Station active</li></ol></td></tr><tr class="even"><td><p><code>VOR1_BEARING_DEGREES</code></p><p><code>VOR2_BEARING_DEGREES</code></p></td><td><code>n</code> (FLOAT)</td><td>The relative bearing for the VOR1/2 station, measured in degrees.</td></tr><tr class="odd"><td><p><code>VOR1_CODE</code></p><p><code>VOR2_CODE</code></p></td><td><code>f</code> (FLAGS)</td><td><p>The VOR 1/2 code flags:</p><ol><li>BIT0:[index] 1= DME available</li><li>BIT1:[index] 1 = TACAN available</li><li>BIT2:[index] 1= voice available</li><li>BIT3:[index] 1= no nav signal available</li><li>BIT4:[index] 1= DME transmitter at glide slope transmitter</li><li>BIT5:[index] 1= no localizer backcourse</li><li>BIT6:[index] 1= glideslope available</li><li>BIT7:[index] 0= VOR, 1= Localizer</li></ol></td></tr><tr class="even"><td><p><code>VOR1_GS_FLAG</code></p><p><code>VOR2_GS_FLAG</code></p></td><td><code>b</code> (BOOL)</td><td>Whether there is a glideslope signal on VOR1/2 (TRUE, 1) or not (FALSE, 0).</td></tr><tr class="odd"><td><p><code>VOR1_GS_NEEDLE</code></p><p><code>VOR2_GS_NEEDLE</code></p></td><td><code>n</code> (FLOAT)</td><td>The glideslope needle deflection, between -120 and 120, which corresponds to -0.7 and 0.7.</td></tr><tr class="even"><td><p><code>VOR1_IDENTITY</code></p><p><code>VOR2_IDENTITY</code></p></td><td><code>p</code> (PVOID)</td><td>The VOR 1/2 identity, as a string.</td></tr><tr class="odd"><td><p><code>VOR1_MAG_VAR</code></p><p><code>VOR2_MAG_VAR</code></p></td><td><code>n</code> (FLOAT)</td><td>The magnetic deviation at the location of the VOR1/2 station, between 0 and 65536, corresponding to 0º to 360º.</td></tr><tr class="even"><td><p><code>VOR1_NEEDLE</code></p><p><code>VOR2_NEEDLE</code></p></td><td><code>n</code> (FLOAT)</td><td>The VOR1/2 needle deviation, between -127 and 127. This corresponds to between -10 and 10 if VOR, or between -2.5 and 2.5 if localizer.</td></tr><tr class="odd"><td><code>VOR1_NEEDLE_RADIO</code></td><td><code>n</code> (FLOAT)</td><td>The VOR1 needle deviation - driven always by VOR - between -127 and 127. This corresponds to between -10 and 10 if VOR, or between -2.5 and 2.5 if localizer.</td></tr><tr class="even"><td><p><code>VOR1_OBI</code></p><p><code>VOR2_OBI</code></p></td><td><code>n</code> (FLOAT)</td><td>The VOR1/2 OBS setting, in degrees.</td></tr><tr class="odd"><td><p><code>VOR1_SIGNAL_STRENGTH</code></p><p><code>VOR2_SIGNAL_STRENGTH</code></p></td><td><code>n</code> (FLOAT)</td><td>The VOR1/2 signal strnegth where 0 is no signal and greater than or eqiual to 256 is a good signal.</td></tr><tr class="even"><td><p><code>VOR1_TF_FLAG</code></p><p><code>VOR2_TF_FLAG</code></p></td><td><p><code>e</code> (ENUM)</p><ol><li>0 = Off</li><li>1 = To</li><li>2 = From</li></ol></td><td>The to/from status of VOR1/2.</td></tr></tbody></table>