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WSPR : some help to configure the softwares..
with Softrock kits (v6,3) and PowerSDR 1.12.20 software
clic to see details of the map
|First, read K1JT pages http://www.physics.princeton.edu/pulsar/K1JT/wspr.html -|
This page just explains how I use WSPR with my own configuration.
|I use a RX/TX Softrock 6,3 with an 10W amplifier and a Low Pass Filter, with I/Q connected to an E-MU 0202 usb sound box (192kb), and an USB headset for local audio ( 48 kB - mic and speaker )|
|> PowerSDR 1,12,20 can be download from download it from http://code.google.com/p/powersdr-iq/downloads/list|
|> WSPR software is to be download from http://www.physics.princeton.edu/pulsar/K1JT/wspr.html|
> With release 2.0, You need 2 kind of Links between Power
SDR and WSPR :
- one to link the audio IN and OUT through 2 Virtual Cables (VAC in PowerSDR) : this option is included in the softwares. Read Alan notes on http://sites.google.com/site/g4zfqradio/softrock-wspr-psdr-and-vac
- one to control the PTT line from WSPR soft through a COM port. You need to download and install a driver like "build226" vCOM driver from N8VP http://www.philcovington.com/SDR_arch.html
- But , much better is the release 2.11 which includes the SDR driver for Softrock - No need of PowerSDR, or Virtual Cable ! Just download the latest software and install it - Read the special "supplement to User's guide".
> As the PC clock needs to be synchronised between all the TX systems, you must download and install a small software like Dimension 4
See the screens of the softwares as they work in my computer:
with the Audio Virtual Cable screen ( useless with 2.11 release ! )
|When all that parts are connected together, the last step is to calibrate the frequency of the TX/RX, as the spot is inside a narrow band of 200 kHz - see the method that works easily:|
A quick check of your frequency calibration
can be performed by tuning to a known Frequency Standard like WWV/WWVH
on 5, 10 or 15MHz.
If you have the WSPR software set up and
running, and select USB mode, tune your transceiver dial to 9998500Hz
(WWV minus 1500Hz) with no bfo offset (RIT/XIT)
The WSPR software will interpret the WWV
signal as the USB of 9998500Hz and display the carrier on the Waterfall
display as a line near the center calibration (for 30 mtrs band setup)
it should read 200Hz.
You can use the mouse cursor on the
waterfall display to read the audio frequency in Hz as read in the
little red box below the waterfall.
You should also see the digital data
sidebands at Fc + and - 100Hz or 100 and 300 Hz on the waterfall.
As most sound cards are within a few Hz of
the correct frequency 1500Hz your transceiver calibration can checked to
within this few Hz error.
There is a more accurate method described in
2.0 users guide in appendix C, thanks to Joe K1JT. posted by
see the screens of the calibration procedure using 10Mhz WWW
|Then you are ready to play...Register on http://wsprnet.org/drupal/ and look for the station that hear you. You will be surprised by the results even with very small power. - Good luck.|
|Screen of stations heard on 30 m from IN88AQ ( on old 2.O realease)|
List of the stations that received me on my
first call on 30m then on 20m with 2W output power and a vertical loop
made for the 17m band at 10 m over the ground !
More than 7000 km with 2W and a small antenna !