op25-dev January 2020

op25-dev@lists.osmocom.org

2 participants
2 discussions

error message help [1 Attachment]
by n3zra＠yahoo.com [op25-dev] 25 Aug '26

25 Aug '26

I am very new to using Ubuntu OS and O op25. I cannot get the system running, my rtl sdr does work on the virtual box but op 25 is not starting. attached is the error message I am getting. I appreciate the the help. Thank you in advance. Andy N3ZRA

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OP25, SDR, DMR, TX
by Владислав Д. 22 Jan '20

22 Jan '20

Good evening, Would You kindly to answer a few questions about the OP25 project and how to organize a transmitter with it using SDR devices (RTL-SDR, LimeSDR)? In the creation process of DMR-standard transmitter in the GnuRadio environment, we came across the absence of some necessary blocks: 4FSK modulator, DMR encoder, packet shaper. Inside the OP25 project we found a file that contains some functionality of DMR TX (dv_tx.py), but only in form of code, not as a GRC block. Could you tell us does this file fully implements the TX-side of the DMR system and whether there is an analogue of it, in the form of a GRC block for GnuRadio? We will be very grateful if you can help us sort this out. Yours faithfully, Vladislav.

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op25-dev January 2020