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Questions tagged [software-development]

Questions related to writing software (programming) for Amateur Radio purposes.

3
votes
3answers
270 views

Is there an FT8 or other weak-signal digital mode specification available?

Is there a complete and programming language independent specification available for the FT8 digital mode? Detailed enough to implement both transmit and receive SDR software from scratch in two ...
2
votes
1answer
217 views

How to trim out background noise GRC

I am creating a radio receiver to pick up "walkie talkie" chatter. success it works fine! I can hear people when they speak on the radio, the only problem i am having is that when no one is speaking ...
1
vote
1answer
228 views

GNU Radio code and data type conversion

I am a GNU Radio beginner, and I use the following code to make the block's output-port output a pmt data: ...
2
votes
1answer
335 views

USRP: Are RX and TX on the same or different channel for single daughterboard?

I've got a USRP X310, currently with just one daughterboard, a WBX-120. I'm writing some C which needs to operate the radio full duplex - I receive on RF A RX2 and transmit on RF A TX/RX. But I'm ...
2
votes
1answer
165 views

Is it possible to generate rf by directly programming a pc parallel port?

From what info I've found, it seems a pc parport has a max speed of ~2meg /sec ? So transmission on medium wave, to ~160 meters should be possible ? With antenna than possibly a small wire, I ...
2
votes
1answer
242 views

How link between gnuradio and baudline?

I want to create a sink block in GNU Radio which transfers the signal to baudline. My purpose is viewing SDR's received signal online. How should I program this block?
2
votes
1answer
426 views

How to process signals captured using a SDR?

I saw that Oona Räisänen uses C and Perl to process digital signals: https://github.com/windytan So I was wondering if there is any book (or ebook) about how to use programming to process digital ...
7
votes
3answers
136 views

Does LOTW have an interface document?

I want to be able to sign my own LOTW entries, without using the provided library (My application is pure Java). Is there a document that explains in enough detail how to do this, assuming of course ...