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WSJT JT6M Glossary |
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- Add - causes the displayed callsign and grid locator to be added to the database file
CALLSIGN.TXT . If an entry for this callsign already exists, you will be asked if you want to
replace it.
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- Auto - toggles ON or OFF timed sequencing of transmit and receive periods.
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- Big Spectrum - display large waterfall spectrogram for most recently decoded file. Time
increases from top to bottom, frequency from left to right. This display can help you to identify different types of signals and noise,
distinguish wanted signals from birdies, etc.
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- Brightness - adjust brightness of waterfall spectrogram (FSK441 and JT6M only; slider
below large graphics area). Click Decode to see effect of change.
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- Burst - A burst is a received MS signal that is greater in duration than a ping
and contains part or all of the transmitted message. A burst length can be from 0.5sec to several minutes duration. Burst length is
relative to frequency. i.e. a given burst will propagate longer on 6M than 2M.
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- Contrast - adjust contrast of waterfall spectrogram (FSK441 and JT6M only; slider below
large graphics area). Click Decode to see the effect of a change.
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- Custom/Standard Texts - toggles between two sets of TX messages. Custom texts can be
used to store messages such as grid locator or contest information.
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- Decode - analyze most recently recorded or opened file, perhaps after one or more decoding
parameters (such as Freeze, Tol, Zap, AFC, or Clip) have been changed.
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- Dsec - adjust UTC clock reading in ±1 s increments to manually re-synchronize with UTC or
with your QSO partner's computer. (In general, it is best to keep the Windows clock set accurately and Dsec set to zero.)
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- Erase - clear all information in main text box and graphical areas.
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- Gen Std Msgs - generate standard messages; also reset TX message to 1 and Tol to 400 Hz.
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- Grid - after a successful Lookup, displays the six-digit grid locator of the callsign in the To
radio box. You can also enter a grid locator manually. If only four digits of the locator are known, add a space.
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- Hot A / Hot B - these are the recommended or optimised qtf or beam headings that are
between 2 stations for a given time of day/year as calculated by WSJT software.
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- Lookup - search database file CALLSIGN.TXT for entry in To radio. If callsign is found, the
station's grid locator is retrieved and used to calculate distance, azimuth, elevation, and Doppler shift.
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- Monitor - start a series of recordings, perhaps to monitor a calling frequency or to copy two
other stations engaged in a QSO.
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- Ping - ping can be described as a short duration bursts that contains little
or no information and is of <0.5sec duration.
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- Play - play most recently decoded file through sound card speaker output. This button
functions much like the "Play" button on a cassette recorder.
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- Record - start recording audio noise from radio. The program will record for the time
entered in T/R Period, or until you press Stop. If Auto is ON, recording will stop when the present T/R interval is finished; the data will
then be plotted and decoded. This control works much like the "Record" button on a cassette recorder.
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- Report - enter the signal report you wish to send to the other station, then click Gen Std
Msgs.
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- S - set minimum increase in signal that will be accepted as a ping.
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- Save Last - save most recently recorded file. (See also Save Decoded and Save all, on the
Save menu).
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- Status Bar - panels at the bottom of the WSJT screen for displaying information such as file
name, file position, RX audio level, and decoding parameters.
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- Stop - terminate a Record, Monitor, or Play operation. This control functions much like
the "Stop" button on a cassette recorder.
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- Tol - set decoder tolerance (in Hz) to frequency offsets. When DF has been established and
reduced to a small value by retuning the receiver, decrease the value of Tol to reduce the probability of false decoding.
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- Tx 1-6 - transmit selected message. Transmission will continue until the end of the present
TX sequence or, if Auto is OFF, for the duration listed in the T/R Period box.
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- TX First - check this box if you want to transmit during the first period of the timed T/R
cycle. Uncheck it if your QSO partner is transmitting in the first period. In this context, "first" is defined as transmitting during the
first T/R interval of an hour.
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- TX Stop - terminate a transmission in progress.
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- To radio - callsign of station being called. Text entered in this box becomes
leading part of recorded file names.
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- Zap - filter out birdies (narrow band signals of approximately constant amplitude) before
attempting to decode.
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