Connect WSJT-X to Yaesu FT-847This page explains how I've connected WSTJ-X to my transceiver Yaesu FT-847.
Reset the transceiver as described in the User Manual
p. 97 "CPU Resetting". Read the User Manual page 16 to understand how
AF and PTT from the PC gets into the transceiver.
the MiniPro interface from ZLP-Electronics
for connecting the PC soundcard
and an USB port to the transceiver (fig. 1). It seems like
the MiniPro is obsolete. A similar unit may be found at ZLP-Electronics.
Figure 1. Audio Cabling between PC and FT-847. The
black connection is an USB cable. Once connected,
Windows assigns a serial port number (COM3) and associates it
with the MiniPro. You can view the serial port number in the
Device Manager (figure 2). The red cable is an audio cable which
branches into audio input and audio output. The branched cable
end is connected to the sound card. The green cable is an audio
cable connected to the DATA IN/OUT port on the rear of Yaesu
FT-847. PTT works as described in the User Manual
p. 16. The three cables were supplied by ZLP-Electronics.
Figure 2. Device Manager (Windows 10).WSJT-X
the DigiMaster IF232 interface from ZLP-Electronics
for connecting the PC to the transceiver's CAT-port (fig. 3). It
seems like the DigiMaster IF232 is obsolete. A similar unit
may be found at ZLP-Electronics
Figure 3. CAT cabling between PC and FT-847.
black cable in figure 3 is an USB cable. Once connected,
Windows assigns a serial port
number (COM7 in my case) and associates it with the DigiMaster
IF232. You can view the serial port
number in the Device Manager as shown in fig. 2. The
blue cable is a serial cable connected to the CAT port of
Yaesu FT-847. Both cables were supplied by ZLP-Electronics.
The following screen-dumps shows my WSJT-X configuration for EME on 144 MHz.
Figure 4. WSJT-X Main window.
The "Sync" value should be set low for best sensitivity.
amount of RF power sent to the SSPA from the FT-847 transceiver can be
set using the "Pwr" slider (fig. 4). This slider controls the
amplitude of the AF signal, which modulates the transmitter.
RF power can also be set using the RF PWR knob on the transceiver.
Figure 5. File > Settings; General tab
Figure 6. File > Settings; Radio tab
the "Test CAT" button for testing the CAT connection. If successfull,
the "Test CAT" turns green, and the "Test PTT" button is enabled.
Figure 7. File > Settings; Audio tab
The soundcard in fig. 7 is an external one connected to the PC via USB.
Figure 8. File > Settings; Advanced tab
delay" is the time between PTT activation and the
beginning of AF sound transmission. During this time, the
relays, the preamp, and SSPA must change from receive to transmit.
Written by OZ1BXM 25-Mar-2022.
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