HamNotes by Jim
Using SDV on the Pi
The SDV for the Pi application was written to communicate to the user via an LCD
plate plugged into the Pi, so there are no graphical screens and no monitor is
needed on the Pi. The user can control operations using the LCD plate's 5
buttons: Up, Down, Left, Right and Select.
Install LCD plate on the Pi before booting
up the Pi
Some users may prefer to configure
their Pi to start SDV automatically at boot time.
For now, though, start it manually. Launch PuTTY on your desktop PC and log onto the Pi using SSH.
To start SDV, enter: sdv (To see a list of all possible
parameters for SDV, click here.) You should see a start up message on the LCD.
- With a speaker-mic plugged in, you should be able to
key up and notice the back light change.
At this point, if using a GMSK modem, the hot-spot radio should also key up and
any audio being spoken will be transmitted.
If you are linked to a reflector, your transmission will also go that
If connected to a reflector, any activity received will be heard through
the speaker-mic and transmitted through the hot-spot if using a GMSK modem.
If a transmission is received by the hot-spot radio you will hear that
through the speaker-mic and depending on call-sign settings on the transmitting
radio that will also be routed to the reflector.
In both situations you should see call-sign and slow speed message on the
Using the menus
You can use the Up/Down buttons on the LCD plate to scroll through the
Link -> Unlink -> Echo -> Info -> Configuration -> WiFi Config -> Shut
Down -> Exit
When not using these menus the Left/Right buttons select the RX and TX
audio invert settings. For those, use the Up/Down buttons to switch
Invert off and on.
The effect is immediate.
- Use the Select button to activate a desired menu option or exit the audio
- Selecting the Link option will allow you to use the Up/Down buttons to
scroll through the available reflectors.
(assuming the G4KLX reflector files have been installed to their default
locations) The Left/Right buttons will scroll through the modules. An asterisk
indicates that the module has not been selected.
When you have selected a reflector press the Select button to exit the
menu and auto link.
- Selecting Unlink will simple unlink you from any connected reflector and
exit back to main screen.
- Select Echo and then press the Select button again to activate.
While in this mode, any transmission through
the speaker-mic will be echoed back.
To exit, use Up/Down buttons to select Exit Menu and press select again.
- Selecting Info will request the link status from the gateway and exit
back to the main screen.
- Selecting Configuration will allow you to edit all call-sign data and
slow speed message.
Use the Up/Down
buttons to scroll through each of the settings.
Pressing the Select button on any setting will enter edit mode indicated
by a flashing cursor.
Left/Right buttons to move the cursor and the Up/Down buttons to scroll through
the character selections.
editing press the Select button.
When done with the Configuration menu use the Up/Down button to scroll to the
exit item and press the Select button to return back to the main screen.
- WiFi Config is experimental at this time.
- Shut Down will gracefully shut down the Pi.
Example configuration values
- Here is an example of the contents of sdv.conf
(located in directory /etc). Obviously you will want to use your own
Speaker/Mike audio level (volume) controls
There are two audio pots accessible on the back side of the Star*DV.
The pot near the center controls the speaker level.
near the corner enclosure screw controls the mike level.
D-Star® is a registered trademark
used for communication equipment (repeaters and transceivers) for amateur
radio communications, and owned by Icom Incorporated.
Copyright © 2009-2017 James M. Moen. All