TX · WSPR Web

UTC

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Next TX (nominal audio start)

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Clock details

TX state

Audio not enabled

IDLE

Audio output must be enabled by a tap before anything can be scheduled (browser policy).

Station

Set callsign and grid

Who

—

Where

—

Power

1 W · 30 dBm

Band · Radio

20 m

Band

Radio dial

14.095600MHz USB

TX audio center

1550.000Hz

AUTO · new center each slot

RF center

14.097150000MHz

dial + TX audio center

TX audio center

Hz

Chosen per slot within 1450–1550 Hz so all four tones keep a guard inside the 1400–1600 Hz window.

Top: window with guard regions and the signal (~5.9 Hz wide) at its center. Bottom: ±7 Hz zoom, tones 0–3 around the TX audio center. Not a spectrum display.

· Available worldwide.

Convention ≠ authorisation

Dial frequencies are the WSJT-X / WSPRnet operating convention. Whether you may transmit depends on your licence, location and band privileges. That responsibility stays with you.

Test audio

Calibration

For setting the drive level. Never a WSPR message.

Available when audio is enabled and no transmission is scheduled.

Frame

162 channel symbols

Enter a valid callsign and grid to see the encoded frame.

Radio setup

Before first use

USB · processor and compression off · low phone volume · little or no ALC. Tap Show for details.