Re: Amateur Radio G3RUH AX.25 2FSK

[Yugal Joshi]

Hello Jeff

Thanks for replying 

From what I learned in last two days in GNU Radio, it looks like gr-25 is an OOT module.

gr-25 works with GR 3.9 and pybinds and I am using GR 3.8.1.0.

Also I want to implement G3RUH  2FSK AX25 using the core modules of GRC or programming  new OOTs so that I can improve my learning curve. 

Any help would be appreciated from the community.

Thanks and Regards

Yugal Joshi 

On Wed, 12 Aug 2020, 4:45 am Jeff Long, <willcode4@gmail.com> wrote:

Have you already take a look at this?

https://github.com/dl1ksv/gr-ax25

On Tue, Aug 11, 2020 at 4:13 PM Yugal Joshi <yugaljoshi2002@gmail.com> wrote:

Hello all 
I am new to the GNU Radio community.

I am starting an effort to implement a receiver using GNU Radio for the amateur radio whose transmitter operates in G3RUH mode with 2-FSK modulation and AX25 data format.

I designed the project to learn GNU Radio as well as to contribute something to the SmallSat Community of my institution Indian Institute of Space Science and Technology (IIST).

Is anyone else working on the same configurations ?

Anyone who can guide me through the procedural steps I should take to design this receiver(G3RUH mode with 2-FSK and AX25 data format)?

As a background information : 
The AX.25 protocol is a standard for encoding the data that includes a message header,station callsign, destination callsign, message and a simple CRC-16.
The system is widely used for position reporting of the amateur stations

Looking for a directive path to move ahead and a positive response.

Thanks and Regards

--

Yugal Joshi 

B. Tech. Electronics and Communication Engineering

Indian Institute of Space Science and Technology (IIST)

Thiruvananthapuram

Kerala

India  - 695547