17.05.2019
    - options for decoding RS92D (1.6GHz)

    sdrtst -r 50000
    sondeudp -f 50000

    in sdrcfg.txt
	f 1680.000 100 0 0 0 50000


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....
....

24.01.2018:
    - read sonde.csv file on start

20.01.2018:

    - simple install instructions in doc

19.01.2018:

sondemod:
    - new sonde.csv (processing in RAM), 
    - frame time & distance in www, 
    - sending to skp server every 15 sec when sonde above 3km

04.01.2018:

sondemod/sondeudp:
    - added decoding PilotSonde
    - added decoding M10 
    - improve decoding DFM
    - writing *.cal files to /tmp

sondemod:
    - write last radiosonde data to /tmp/sonde.csv (parameter -e)
    - when rinex too old, file /tmp/toold are created
    - sending decoded data to SP9SKP database https://skp.wodzislaw.pl/sondy

sdrtst:
    - waterfall on console
    - write waterfall to /tmp/wtf<number>.bin (parameter -n)
    - offset to AFC (new parameter in file with frequencies)
	example:
	    f 404.000 15 -6500 50 0 24000 # M10
	    f 401.465 50 1200 0 0 12000   # pilotSonde
	    f 403.000 5 0 0 70 12000	  # RS41,RS92 and others

www: 
    - require lighttpd and php
    - simple monitoring and configuration by web