init
add psk31 tx
add gitignore
tune tx flow graphs for audio transmission
tune rx flow graph for audio transmission
add message input to encoder
add message port to decoder block (doesn't produce messages yet)
encoder block should now produce PDUs
write en/decoder in C++
(still some bugs though...)
fix bug in encoder (deleted wrong substring while sending)
sending/receiving via netcat now mostly works
fixed incorrect encoding of the last character in a message
added debug output
added some methods to the timing controller
added separate flow graphs for sending and receiving
trying different approach to decode the chip sequence
fixed operator precedence
flowgraph update
receiver is now able to recover the original data

it seems like the currently used band pass filter also filters out
the frequency content of the chip sequence,
leaving only the differentially encoded data signal.
encoder now also works with pmt symbol input (generated by msg strobe blocks, for instance)
changed filter at receiver to high pass

it seems like the real problem was the frequency content at 3kHz
(introduced by difference in clock freqs of the USRPs?)
using the high pass filter, the receiver is able to decode the data
quite well (still room for improvements though...)