USAGE: ./elad-comms serial frequency filters sampling corresponding_host port

I/Q are sent via UDP on port (last parameter) to the corresponding_host

Commands are read by TCP on port (last parameter)

filters parameter is yz where y is (1/0) for attenuator (inserted/not) and z is (1/0) for antialiasing (inserted/not)

sampling can be one between: 192000 384000 768000 1536000 6144000

TCP and stdin are read and accept these commands:
Fxxxxxxxxxxxx
where xxxxxx is the frequency in Hz
Ayz
where y is 1 for normal filter based on frequency 
      and y is 0 for no filter
and z id 1 for attenuator inserted
and z is 0 for no attenuator

if you omity the frequency elad-comms starts at 14.200 MHz
