Thank you for your reply. I’m doing test my flow graph using HackRF One
Additionally, I use ANT500 antenna and frequency = 433MHz, Sample rate = 16M and GMSK modulation. After read your post, I did experiment relate to gain level (RF, IF, BB) on GNURadio companion using osmocom block I confirmed that : Tx) RF gain (0 or 14); is PA switch, but any effect in my case IF gain (0 ~ 40); is overall Tx power BB gain (0~62); is for Rx mode, does any effect at Tx Rx) RF gain(0 or 14); is LNA switch, LNA on = get more signal IF gain (0 ~ 40); get more signal (quantity?) BB gain (0 ~ 62); overall power of signal However, when I send text data using GMSK modulation at about 2m distance, the Rx can’t receive any data except signal is little sparked Is there any problem on my text transfer flow graph ?? my flow graph : Tx) File source -> Packet Encode -> GMSK modulation -> osmocom sink Rx) osmocom source -> GMSK demodulation -> Packet Decode -> file sink Thank you. _______________________________________________ HackRF-dev mailing list [email protected] https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
