42 lines
1.9 KiB
Markdown
42 lines
1.9 KiB
Markdown
# Catch the RAJ9
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The python script we used to track the RAJ9 High Altitude Baloon from OK1RAJ (https://ok1raj.cz/) during Maker Faire Prague Online 2020 (https://www.makerfaireprague.online/). It can send the gathered information to a specified telegram channel or show the possition in a live map.
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NOTE: The thing is pretty hacky, we wrote it overnight. We just thought we would put it out there in case it could be useful to someone.
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# Requirements
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- Software Defined Radio - [RTL-SDR](https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/) or similar
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- SDR control program - [GQRX](https://gqrx.dk/) or similar
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- [FLDIGI](https://github.com/w1hkj/fldigi/) or even better [dl-fldigi](https://github.com/jamescoxon/dl-fldigi) for uploading to [habhub.org](http://habhub.org) at the same time
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- the script also relies on the awesome [pyfldigi](https://github.com/KM4YRI/pyFldigi), [crccheck](https://pypi.org/project/crccheck/) and optionally [python-telegram-bot](https://pypi.org/project/python-telegram-bot/) and [selenium](https://pypi.org/project/selenium/) python modules.
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# Setup
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1. connect RTL-SDR
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2. start GQRX and configure the correct frequency and modulation
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3. start FLDIGI/DL-FLDIGI
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4. set the correct decoding parameters in FLDIGI/DL-FLDIGI settings, in case of RAJ9 set the following parameters:
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```
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Modem/TTY/Tx:
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Carrier shift: Custom
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Custom shift: 540
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Baud rate: 100
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Bits per character: 7
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Stop bits: 2
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Filter Adjustment: 1.3
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```
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5. configure the XML-RPC API in FLDIGI/DL-FLDIGI settings:
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```
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On fl-digi latest:
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Miscs/TCP-IP sessions:
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Lock: false
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On dl-fldigi:
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Rig/XML-RPC:
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Use XML-RPC program: true
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```
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6. It should work now! Start the script.
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If you want to use the telegram feature, you will have to set a valid bot key in the program.
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If you want to use the live map view feature, you will have to get a geckodriver executable.
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