DragonOS Focal Rock Pi X w/ GSM Auto CalypsoBTS (Motorola C139, Samsung S4)
This short video tutorial setup covers the use of Auto CalypsoBTS in DragonOS Focal running on a Rock Pi X (https://wiki.radxa.com/RockpiX).
Auto CalypsoBTS provides an interactive GUI to assist in setting up, running, and managing the CalypsoBTS/Osmo-NITB powered GSM network. More information about the GUI can be found here,
https://github.com/jhonnybonny/AutoCalypsoBTS
More information on CalypsoBTS itself is located here,
https://osmocom.org/projects/baseband/wiki/CalypsoBTS
The only SDR used in this video is off camera, which in this case was a BladeRFxA9. It’s sole purpose was to temporarily create an existing GSM BTS using yateBTS, also in DragonOS. This BTS provided a clock source to the Motorola phone that was modified to become a GSM BTS itself. Once the phone had a clock source sync, yateBTS was turned off.
***As with any previous videos discussing any sort of Cellular network setup, follow all local guidelines and take all precautions necessary to contain any and all transmissions.***
The Samsung S4 then connected to the GSM BTS being transmitted by the Motorola phone.
Enjoy!
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