Connect the radio to your PC
Install the model’s USB driver first, then connect the USB cable and turn on the radio. Continue after the PC recognizes it.
Download PSRTTY
PSRTTY official site: use Download at the top to get the ZIP, extract it and place the folder somewhere convenient on your PC.
Open Settings
After launch, use Radio → Basic / Radio / Audio settings.
Enter your station details
In Basic Settings, enter Profile name and your callsign. Naming the Profile after the radio helps identify it later.
A callsign is enough to proceed. Entering JCC/JCG now avoids later reconfiguration. Then select Radio.
Select and connect the radio
Choose your radio on the Radio tab.
ICOM radios
With one radio and its default CI-V address, leave COM on Automatic. With two or more radios, choose the target radio’s CI-V port.
Yaesu and Kenwood radios
Select the COM port; many Yaesu models use Enhanced for CAT.
Verify communication with Connection test, then press Connect.
Set the receive audio input
On Audio IN, select the device receiving radio audio. Even noise without a signal should produce a slight meter response.
Start at 50%; a visible response is enough. Do not raise the level just because noise is low. Press Save audio level after checking.
Set the transmit audio output
On Audio OUT, select the radio output. Before the roughly 10-second test, choose an appropriate clear RTTY frequency, check LSB-D/DATA-L and antenna SWR, and avoid interfering with others.
Press Test tone + TX-PTT and adjust TX level while watching ALC. If unavailable on screen, use the radio meter. Aim just below where ALC starts moving.
After adjustment, save the audio level, then press Save at the bottom.
Configure contest macros
Saving disconnects the radio temporarily. Open Edit → Macro settings, choose JARL World Wide RTTY Contest and Apply. Customize the resulting contest messages if needed.
Read the explanation, adjust SENT if needed, keep Fixed checked and Save.
Prepare to receive
Reconnect if disconnected at STEP 7. The following steps use real signals. For preparation only, confirming the Control window opens is enough for now.
Receive an RTTY signal
Open Control and Cross Scope, and optionally Sub-decode if the PC can handle it. Align the two spectral peaks with MARK and SPACE. If spacing differs, try Width RESET; if audio placement looks wrong, try Position RESET and realign.
Tune frequency until the cross-scope traces approach a cross. When detected, C tuning also shows the offset.
Enter the other station’s callsign
Click the callsign in a decoded [RX] CQ line to populate CALL. Automatic extraction may already have filled it. Before calling, check whether the station has been worked.
Call and log the QSO
- Press F2 to send your callsign.
- Check the returned exchange in RCVD. Correct it manually if interference caused incorrect auto-entry.
- Press F3 to send your exchange.
- After receiving TU 73 or another closing message and completing the QSO, recheck RCVD and press Add to log.
Automatic logging is available, but callers should start with manual logging because closing messages vary.
Try calling CQ
Find a clear frequency and send F1. On a response, verify callsign and exchange. AutoCQ can repeat calls once you are comfortable.
Correct a logged QSO
Double-click a recent QSO to edit input mistakes. Find older records through View → QSO log.
Choose the submission format
After the contest, choose File → Cabrillo export, then JARL World Wide RTTY Cabrillo.
Review QSOs and station information
Check contest period and your callsign, then Extract. Select QSOs and press Next. The 2026 period is October 17, 09:00 to October 19, 09:00 JST. Compare with the automatically filled values.
Follow prompts to enter station information. JD1 locations and other cases may not be determined from callsigns alone. Check calculated scores and multipliers.
Save and submit the file
Fill the remaining fields and save Cabrillo. Review/correct address details and calculated scores in a text editor. Do not change QSO records such as time, callsign or exchanged numbers after the contest.
Select JARL World Wide RTTY CONTEST, upload the file and check acceptance. The 2026 deadline is October 28, 24:00 UTC.