New 20m SDR receiver added to WEBSDR
(Softrock receiver) Where can I get a softrock recever http://www.giga.co.za
I have build my first Softrock Ensemble RXTX for the 30m, 20m and 17m bands.more details on the receiver and the assembly details can be found at http://www.wb5rvz.com/sdr/ensemble/.
Building the Softrock Ensemble RXTX |
Testing the Local Oscillatory |
Signal is pure sine wave |
The program can be found on Google code https://code.google.com/p/usbsoftrock/downloads/list
You will need to compile the code before you can use it.
here is the command that you could use after compilation
sudo usbsoftrock status
Version : 15.12
USB SerialID: PE0FKO-0
Startup Freq: 14.210000 (x 4.00)
Xtall Freq : 114.285000
Smooth Tune : 3500 PPM
Si570 I2C : 55 Hex
BPF Enabled: 0
Set the frequency you require
sudo usbsoftrock set freq 14.210
The frequency was a few khz lower and I had to calibrate the frequency using the following command. You can retrieve the frequency at which your Si570's crystal oscillates with the command sudo usbsoftrock calibrate
Version : 15.12
fXTALL = 114.207544
Calibrating the frequency with the value you got above.
sudo usbsoftrock -x 114.207544 set freq 14.125
Version : 15.12
Checking the frequency. sudo usbsoftrock getfreq
Version : 15.12
Frequency : 14.089549 (x 4.00)
here is the command list
COMMAND is one of
calibrate (may require -s option)
getfreq
getregisters
interactive
getptt (-h option for Mobo only)
getkeys (PE0FKO+TF3LJ+Mobo)
gettone
ptt {on|off}
set bpf {on|off} (PE0FKO+TF3LJ+Mobo)
set bpf_addr <band> <filter> (PE0FKO >= 15.12+Mobo)
set bpf_point <crossover> <f in MHz> (PE0FKO+TF3LJ+Mobo)
set lpf {on|off} (TF3LJ+Mobo only)
set lpf_addr <band> <filter> "
set lpf_point <crossover> <f in MHz> "
set freq <frequency in MHz>
set si570_addr <i2c address in decimal>
set si570_multiplier [band] <decimal factor> (PE0FKO>=15.12+Mobo)
set startup <frequency in MHz> (PE0FKO+TF3LJ+Mobo)
set xtall <frequency in MHz> (PE0FKO+TF3LJ+Mobo)
status
where TF3LJ = Lofturs AtMega168 derivative
Mobo = Mobo 4.3 Project AT90USB162 Firmware
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