DIN 5 Male 1 (DATA IN) → 3.5mm TRRS ring 1 (RIG_AFIN)
DIN 5 Male 2 (GND) → 3.5mm TRRS sleeve (GND)
DIN 5 Male 3 (PTT) → 3.5mm TRRS ring 2 (PTT)
DIN 5 Male 4 (DATA OUT) → 3.5mm TRRS tip (RIG_AFOUT)
DIN 5 Male 5 (BUSY) → NC
Because FT-920’s DB9 connector is female, Digirig’s standard RS-232 cable with female connector will not work with it (nothing against this, it just doesn’t work with electronics). This calls for a custom DB9 male serial cable for Digirig:
I ordered and received my cable’s for the FT-920. Thank you for making these.
From the FT-920 Manual
Data Jack
Pin 1 (AFSK input): This pin maybe used for either 300 baud SSB-mode digital operations or for 1200- baud FM packet. Not suitable for 9600 baud operations.
Rear switch needs to set to AFSK. (Manual page 16)
CAT Control
Baud rate: 4800
No Parity (What is parity?)
Data Bits: 8
Stop Bits: 2
(Manual page 19)
What is the handshake in WSJT-X?
PTT Method of RTS, I believe RTS stands for Ring tip sleeve. Please let me know if this is correct
So when using software such as Virtual Serial Ports Emulator (VSPE) what determines the baud rate settings?
I am trying to better understanding the digital mode settings and which settings govern.
The baud rate is determined by the software you are configuring (WSJT-X in this case) and must match the baud set in the transceiver. Faster bauds make the CAT control faster (hardly noticeable), slower speeds are less prone to communication errors (also often not noticeable difference).
Parity is a feature of the serial protocol allowing to ensure the integrity of the transmitted data. Almost always turned off or not supported by the transceivers so the default is “N”.
Flow control/handshake is use of additional lines (physical wires) to pause the transmission when one of the sides is busy. This is something that was necessary 50 years ago with slower computers and no buffering. Now some of these signals are used for the alternative purposes e.g. Digirig uses RTS (ready to send) signal to key up the radio and none of the flow control lines are actually connected in the cables (RTS, CTS, DTR, DSR). For this reason when using Digirig handshake/hardware flow control, and flow control signals should be disabled in the area of configuration pertaining to serial CAT control, rig control etc. RTS should be configured in the settings pertaining to PTT.
You can continue learning about serial ports, but most of it is computer geek stuff and majority of operators can get away with basic understanding and memorized settings.
