This plugin controls switchover between a Rx (Device source) and Tx (Device sink). It has no other controls than an adjustable delay from Rx to Tx and back to Rx. Because of its simplicity it can also serve as a model to build other feature plugins.
This button starts or stops the plugin
Click to switch from Rx to Tx and again to switch back to Rx. When in Tx mode the button is lit.
This LED type display shows the current PTT status:
- Green: Rx runs
- Red: Tx runs
- Grey: None active (transient)
Toggle this switch to activate or de-activate vox control. When activated the audio input level is monitored and appears in (4.5) and if the level exceeds the level set by (4.3) and displayed in (4.4) then the vox button turns green until vox goes off after the hold period (4.6). The vox system controls the PTT only if the vox PTT enable checkbox is checked (4.2). Thus you can set the appropriate level (4.3) before engaging PTT control.
Right click on this button to open the audio input device selection dialog.
Check this box to enable PTT control by the vox system.
Use this button to adjust the vox threshold level in power dB (0 dB = full range)
This is the value set by (4.3) in dB.
This is the audio input level in dB displayed when the vox system is active (4.1)
The vox is held active for this amount of time in milliseconds after the audio input power goes below the threshold level (4.3)
Use this button to refresh the list of devices (5) and (6)
Use this combo to select which Rx device is controlled
Use this combo to select which Tx device is controlled. If no device label appears you can use the refresh button (5) to re-populate the list. Else it means that there are no Tx devices in the SDRangel instance.
When a transition script (11) (13) is enabled this will show the log and status of the last execution of such script.
Value in milliseconds between Rx stop and Tx start
Value in milliseconds between Tx stop and Rx start
Enable/disable execution of a transition script (12) when PTT is switched from Rx to Tx.
Click on the button with a folder icon to open a file dialog where you can locate the script to be executed when transitioning from Rx to Tx. The full path of the script (if any) is shown next to the button. When invoked 4 positional parameters are passed as arguments to the script in this order:
- Rx device set index (integer)
- Rx device center frequency (floating point scientific notation)
- Tx device set index (integer)
- Tx device center frequency (floating point scientific notation)
Enable/disable execution of a transition script (14) when PTT is switched from Tx to Rx.
Click on the button with a folder icon to open a file dialog where you can locate the script to be executed when transitioning from Tx to Rx. The full path of the script (if any) is shown next to the button. When invoked 4 positional parameters are passed as arguments to the script in this order:
- Rx device set index (integer)
- Rx device center frequency (floating point scientific notation)
- Tx device set index (integer)
- Tx device center frequency (floating point scientific notation)
If the controlling device (Rx or Tx specified with radio buttons (18) and (22)) has GPIO support it will use the mask (16) and values (16) bits to activate the corresponding GPIO pins of the device.
Specify which bits of the GPIO are activated (0x00 to 0xFF) during Rx to Tx transition. Bit value 0 to ignore the bit or 1 to take it.
Specify the value of the GPIO bits that are activated (0x00 to 0xFF) during Rx to Tx transition. Masked bit positions are ignored and can take any value.
You can specify either the Rx or Tx device for GPIO control. Click on this radio button to specify the Rx device.
If the controlling device (Rx or Tx specified with radio buttons (18) and (22)) has GPIO support it will use the mask (20) and values (21) bits to activate the corresponding GPIO pins of the device.
Specify which bits of the GPIO are activated (0x00 to 0xFF) during Tx to Rx transition. Bit value 0 to ignore the bit or 1 to take it.
Specify the value of the GPIO bits that are activated (0x00 to 0xFF) during Tx to Rx transition. Masked bit positions are ignored and can take any value.
You can specify either the Rx or Tx device for GPIO control. Click on this radio button to specify the Tx device.