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Change to THOR-25 modem, increasing interleave depth to 1 second.? NOT compatible with previous test releases.? This change should improve the decoder under NVIS conditions, such as Mid-Latitue disturbed:

??? THOR-25
?? ?
????? * add new THOR modem with following characteristics
??????? . symlen = 320
??????? . samplerate = 8000
??????? . flushlength = 20
??????? . bandwidth = 460
??????? . interleave depth = 25, 1 second
??????? . IEEE coefficients for viterbi encode/decode algorithms
????????? THOR_K15? 15
????????? K15_POLY1 044735
????????? K15_POLY2 063057
??????? . objective to provide highest baud within 500 Hertz bandwidth for
????????? European amateurs
????????? .CPS test text:
???????????? "0123456789
????????????? abcdefghijklmnopqrstuvwxyz
????????????? ABCDEFGHIJKLMNOPQRSTUVWXYZ"
???????????? number chars:????? 66
???????????? overhead:???? 6.480000 sec
???????????? xmt time:???? 10.280000 sec
???????????? xmt samples:? 134080
???????????? chars/sec:??? 6.42
????? * assigned secondary RsID code 691 to THOR-25
????? * increased flush length for all THOR baud rates
????? * added configurable start and end of signal shaping to these modem types:
??????? . dominoEX
??????? . psk
??????? . mfsk
??????? . rtty
??????? . thor
??????? . selectable on configuration tab Modem/General
????? * restored selectable paths to all THOR modem types

Bench tests with the above test parameters produced 100% decode.

73, David
W1HKJ