13 Commits

Author	SHA1	Message	Date
Joe Taylor	5a0cb0f0a0	Fix a bug in gen_ft8wave.f90 that failed to update pulse and ctab when sample rate changes.	2021-10-28 11:47:00 -04:00
Steven Franke	77f05e9e10	In gen_ft8wave, make sure that wave() is not referenced unless icmplx=0.	2020-06-21 20:24:25 +01:00
Joe Taylor	02eb4fe90b	Use a table lookup for exp(i*phi) in gen_ft8wave.f90.	2020-03-03 12:40:27 -05:00
Bill Somerville	cf2219173a	Squash a SEGV	2019-04-20 01:14:23 +01:00
Steve Franke	be72461142	FT4: Some groundwork for subtraction.	2019-04-18 14:15:24 -05:00
Steve Franke	f296e37630	Fix a bug that didn't show up when I compiled on the Mac.	2019-04-12 18:54:33 -05:00
Steve Franke	cd8ea16f40	FT8: Use GFSK waveform with BT=4.0 as reference for subtraction, for now. May want to change to BT=2.0 before v2.1 release?	2019-04-12 17:11:26 -05:00
Steve Franke	3759198982	Remove ramp-up and ramp-down symbols. Instead, shape the first 1/8th of first and last real symbols.	2019-02-25 15:03:43 -06:00
Steve Franke	ec2d5b6233	Fix the sign of one of the Nuttal window coefficients. Change BT to 2.0.	2019-02-25 12:57:34 -06:00
Steve Franke	17ac99344c	For now, change to BT=1.5 for FT8. This commit enables the waterfall analysis window. This decreases sidelobes significantly in exchange for increased noise bandwidth. Sensitivity to weak tones will be degraded somewhat.	2019-02-23 14:18:22 -06:00
Joe Taylor	25bfa3798a	Transmit FT8 using a gaussian-filtered waveform.	2019-02-22 13:39:39 -05:00
Steve Franke	d9c99601ae	Fix bugs in gen_ft8wave.f90.	2019-02-21 15:56:21 -06:00
Steve Franke	1acb5d5d99	Add routines needed to test FT8 with GFSK pulses.	2019-02-21 15:48:02 -06:00