lan I have done some research work. The input values of uhd should be -1<=x<1, and the gr_multiply_const_ff block has set the default amplitude to 1, so this block seems useless.
The only way I found to scale the power of signal we transmit is to enhance the gain of usrp_sink. However, we use RFX900 d'board as it has a bigger gain range (0~70dB), and RFX900 doesn't provide a adjustment tx gain. In other words, the tx.set_gain() and tx.get_gain() can't work at all. Did the RFX900 set the maximum gain value as tx_gain default value, It could also be 70dB, right? Is there any other way to scale the transmit signal power with uhd? best. Lee -- View this message in context: http://gnuradio.4.n7.nabble.com/trouble-with-gr-multiply-const-ff-tp45018p45128.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
