I want to made signal generator with whom I can play with RTL-SDR cards, testing digital modulation,. I have couple of questions regarding that I'm not skilled with soldering, but know basic of programming with GNU radio or arduino. What would be easisest but also efficient approach to manage that task, build something based on signal generator, connected and controlled over arduino, or with rtl-sdr cards like hackrf, hermes, pluto, lime.
1. Approach I don't know much about clock generators like Si5351a or AD9959, which is better, maybe something else that I connect to arduino, please something with already build libraries on github, etc.
2. Second approach, I have hackrf, but think that tx specs are pretty pure, not sure to invest in external tx amplifier or to buy better rtl-sdr card, speciffically for HF band, like Hermes lite plus, but again I don't even know if it's compatible with GNU radio, can't find block module on GNU radio, although on hermes site specs, they claim that it's full compatible with GNU radio.
Main goal is to made device for generating signals like FSK, PSK, but also that I play with replay attacks, just for testing purpose.
1. Approach I don't know much about clock generators like Si5351a or AD9959, which is better, maybe something else that I connect to arduino, please something with already build libraries on github, etc.
2. Second approach, I have hackrf, but think that tx specs are pretty pure, not sure to invest in external tx amplifier or to buy better rtl-sdr card, speciffically for HF band, like Hermes lite plus, but again I don't even know if it's compatible with GNU radio, can't find block module on GNU radio, although on hermes site specs, they claim that it's full compatible with GNU radio.
Main goal is to made device for generating signals like FSK, PSK, but also that I play with replay attacks, just for testing purpose.