mirror of https://github.com/saitohirga/WSJT-X.git
109 lines
4.5 KiB
Plaintext
109 lines
4.5 KiB
Plaintext
- Select *WSPR* from the *Mode* menu. The main window will
|
|
reconfigure itself to the WSPR interface, removing some controls not
|
|
used in WSPR mode.
|
|
|
|
- Set the Wide Graph controls as suggested below.
|
|
|
|
image::WSPR_WideGraphControls.png[align="center",alt="WSPR_WideGraphControls"]
|
|
|
|
- Use the mouse to drag the width and height of the main window to the
|
|
desired size.
|
|
|
|
- Select an active WSPR frequency (for example, 10.1387 or 14.0956 MHz).
|
|
|
|
+
|
|
|
|
IMPORTANT: If you will transmit in the 60 m band, be sure to choose a
|
|
frequency that conforms with your local regulations.
|
|
|
|
- Click *Monitor* to start a 2-minute WSPR receiving period.
|
|
|
|
- If you will be transmitting as well as receiving, select a suitable
|
|
value for *Tx Pct* (average percentage of 2-minute sequences devoted
|
|
to transmitting) and activate the *Enable Tx* button. Transmitting
|
|
periods are also 2 minutes duration, and will occur randomly in time
|
|
to reduce the chance of clashing with other stations you may be
|
|
monitoring.
|
|
|
|
- Select your Tx power (in dBm) from the drop-down list.
|
|
|
|
=== Band Hopping
|
|
WSPR mode allows those with CAT-controlled radios to investigate
|
|
propagation on many bands without user intervention. Coordinated
|
|
hopping enables a sizable group of stations around the world to move
|
|
together from band to band, thereby maximizing the chances of
|
|
identifying open propagation paths.
|
|
|
|
- To enable automatic band hopping, check the *Band Hopping* box on
|
|
the main window.
|
|
|
|
- Click *Schedule* to open the *WSPR Band Hopping* window, and select
|
|
the bands you wish to use at each time of day.
|
|
|
|
image::band_hopping.png[align="center",alt="Band Hopping"]
|
|
|
|
- Band-switching occurs after each 2-minute interval. Preferred bands
|
|
are identified with time slots in a repeating 20-minute cycle,
|
|
according to the following table:
|
|
|
|
[width="80%",align="center",cols=">20,10*>8",options="header"]
|
|
|===
|
|
|Band: |160|80|60|40|30|20|17|15|12|10
|
|
.3+|*UTC minute:* | 00|02|04|06|08|10|12|14|16|18
|
|
>| 20|22|24|26|28|30|32|34|36|38
|
|
>| 40|42|44|46|48|50|52|54|56|58
|
|
|===
|
|
|
|
- If the preferred band is not active according to your band-hopping
|
|
schedule, a band will be selected at random from among the active
|
|
bands.
|
|
|
|
- If the box labeled *Tune* is checked for a particular band, _WSJT-X_
|
|
transmits an unmodulated carrier for several seconds just after
|
|
switching to that band and before the normal Rx or Tx period
|
|
starts. This feature can be used to activate an automatic antenna
|
|
tuner (ATU) to tune a multi-band antenna to the newly selected band.
|
|
|
|
- Depending on your station and antenna setup, band changes might
|
|
require other switching besides retuning your radio. To make this
|
|
possible in an automated way, whenever _WSJT-X_ executes a successful
|
|
band-change command to a CAT-controlled radio, it looks for an
|
|
executable file or script named `user_hardware`. This is done using
|
|
`CMD /C user_hardware <band>` on Windows, or `/bin/sh -c user_hardware
|
|
<band>` on other platforms, where band is described below. On Windows
|
|
the first file with any extension listed on the PATHEXT environment
|
|
variable added to the file name root `user_hardware`, and found in the
|
|
directories listed on the PATH environment variable will be executed.
|
|
On other platforms, the first executable script, or program, named
|
|
`user_hardware` found in a directory listed on the PATH environment
|
|
variable will be executed.
|
|
|
|
user_hardware nnn
|
|
|
|
- In the above command `nnn` is the band-designation wavelength in
|
|
meters. You must write your own program, script, or batch file to do
|
|
the necessary switching at your station.
|
|
|
|
IMPORTANT: The use of the PATH (and PATHEXT on Windows) environment
|
|
variables is a new feature. To emulate previous behavior make sure
|
|
that the location of your user_hardware script or program is on the
|
|
PATH environment variable used by _WSJT-X_.
|
|
|
|
The following screen shot is an example of WSPR operation with
|
|
band hopping enabled:
|
|
|
|
image::WSPR_2.png[align="center",alt="WSPR_2"]
|
|
|
|
A careful look at the screen shot above illustrates some of the
|
|
impressive capabilities of the WSPR decoder. For example, look at the
|
|
decodes at UTC 0152, 0154, and 0156 along with the corresponding
|
|
minutes from the waterfall display below. Yellow ovals have been
|
|
added to highlight two isolated signals decoded at -28 and -29 dB in
|
|
the first and third two-minute interval. At 0154 UTC signals from
|
|
VE3FAL, AB4QS, and K5CZD fall within a 5 Hz interval near audio
|
|
frequency 1492 Hz; similarly, K3FEF, DL2XL/P, and LZ1UBO fall within
|
|
a 6 Hz interval near 1543 Hz. Each of the overlapping signals is
|
|
decoded flawlessly.
|
|
|
|
image::WSPR_1a.png[align="center",alt="WSPR_1a"]
|