1. Journey into Software Defined Radio
Anton Janovsky
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Installing SDRSharp
Copy sdrsharp-x86 from Internet to your laptop.
Make sure your Laptop has internet connectivity
Run install-rtlsdr.bat file
What does the script do
It detects if you have 32 or 64 bit operating system and then install the zadic receiver for your operating system.
Zadic can also be manually downloaded and installation as seen on the screenshot.
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Using SDRSharp
If you have installed the SDRSharp software before then just select the RTL-SDR/USB in the option menu and you then select start.
Demo of Live SDR dongle
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Using SDRSharp
Explanation of the different functional
Demo of Live SDR dongle
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Using SDRSharp
If you have installed the SDRSharp software before then just select the RTL-SDR/USB in the option menu and you then select start.
Demo of Live SDR dongle
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Tracking using Gpredict
Update your keps
Select the satellites of interest
Start SDRSharp
Configure Virtual audio cable
Start you telemetry program e.g. soundmodem or Funcube Dashboard.
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Setting up your SDRSharp to receive satellite frequency doppler data from Gpredict
Download the Gpredict plugin for SDRsharp
Copy the DLL
Change the configuration file.
Setup your Virtual Audio cable.
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Linking all the applications together using Virtual Audio Cable
Install Virtual Audio Cable from Internet.
Configure your input and output Audio device.
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How To decode The Balloon APRS position information on MHZ
Install Virtual Audio Cable software.
Configure your input and output Audio device.
Install Soundmodem 100 application
Tune SDRSharp to MHz link Sound modem to virtual audio cable.
Enter your virtual audio cable details here.
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How To Display your decoded data on a map using UI-view.
Install Virtual Audio Cable software.
Configure your input and output Audio device.
Install Soundmodem 100 application
Tune SDRSharp to Mhz link Sound modem to virtual audio cable.
Configure Soundmodem.
Install Map software UI-View
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How To Decode the Balloon 10Ghz CW decoding with FLDIGI
Install Virtual Audio Cable software.
Configure your input and output Audio device.
Install Soundmodem 100 application
Tune SDRSharp to Mhz link Sound modem to virtual audio cable.
Install FLdigi CW decoder
Configure your Virtual Audio cable.
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How To Decode SSTV from the international space station (ISS)
Install Virtual Audio Cable software.
Configure your input and output Audio device.
Install MMSSTV for windows.
Tune SDRSharp to Mhz link Sound modem to virtual audio cable.
Configure your Virtual Audio cable in sstv.
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How To Decode SSTV from the international space station (ISS)
How to track and decode the SSTV
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How To Decode Weather satellite Pictures.
Install the wxtoimg application from website.
Setup Virtual audio cable
Select NOAA satellite in gpredict to control Doppler frequency in sdrSharp
Audio of Image
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How To Decode Weather satellite Pictures.
Install the wxtoimg application from website
Setup Virtual audio cable
Select NOAA satellite in gpredict to control Doppler frequency in sdrSharp
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Active Satellites
Active Satellite Frequencies
Mineo Wakita JE9PEL maintains a page on his website listing the frequencies of all amateur radio satellites.
A spreadsheet of the uplinks and downlinks of each satellite can be downloaded from
The status for each is given as one of: Active (*), Inactive (i), Reentered (r), Failure (f), Earth Escape (e). Live OSCAR Satellite Status Page
DK3WN Active satellites frequencies and status table
Live satellite cluster list
Satellite Missions Database
HF, VHF and UHF Satellite Frequency List
Recordings of the signals from Amateur Radio satellites can be found on the Sounds from Space website of Matthias Bopp DD1US.
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Active Satellites
Satellite status
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18. Funcube Satellite Telemetry Download.
Install Funcube Dashboard.
Register and get your password to upload your recordings
Fitter message.
Uploading rankings.
FOX decoding software

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Funcube Bragging rites
You can upload your funcube data to Funcube Warehouse website and get ranked.
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20. Decoding FUNCube-1 Telemetry on WebSDR.
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Fox Telemetry
Frequencies are as follows:EO-79
• MHz 1k2 BPSK or CW Telemetry
• Inverting SSB/CW transponder (400 mW)
– – MHz Uplink
– – MHz Downlink
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How does SDR work?
RF directly convert to digital signal using analog to digital converter.
The digital signal is called baseband.
The Baseband signal is normally defined as to independent I and Q signals.
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How does SDR work?
Fundamentals of a IQ signal
Components of a Sine wave.
Simple Amplitude modulation.
Quadrature Signals.
Properties of a summing Quadrature Signal. (IQ)
Modulation and Demodulation and IQ Signals.
Base Band
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How does SDR work? FM AM
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How does SDR work?
SSB Demodulation 1
USB
LSB
Remove LSB 3 2
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26. What else can I do with SDR on a Raspberry Pi
APRS (RTL-SDR) (Raspberry Pi) The pre libraries and RTL needs to be installed sudo apt-get install git cmake build-essential libusb-1.0 libusb dev libpulse-dev libx11-dev libpulse-dev libx11-dev python-pkg-resources qtcreator libtool autoconf automake libfftw3-dev
# Script to run I gate for ISS #!/bin/bash nohup rtl_fm -f M - | direwolf -l /home/pi/iss-uhf-log/ -c /home/pi/sdr.conf -r D 1 - > /dev/null 2>&1 & #
Grab and install MultimonNG:
Try decoding some APRS:
sudo rtl_fm -f M -s 22050|multimon-ng -t raw -a AFSK1200 -f alpha -A /dev/stdin Or use Soundmodem it seems to work better.
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