dash_host=penetrator freq=144500000 Fs=240000 Rb=10000 rx_freq=$(($freq-2*$Rb)) numTxPackets=1000 bitsPerPacket=100 numTxBits=$(( ${numTxPackets}*${Rb}/${bitsPerPacket} )) passRxPackets=$(( $numTxPackets-10 )) rx_secs=15