diff --git a/lib/superfox/Makefile b/lib/superfox/Makefile
index 6e3127f51..290e897da 100644
--- a/lib/superfox/Makefile
+++ b/lib/superfox/Makefile
@@ -15,12 +15,17 @@ CFLAGS= -O9 -Wall
 %.o: %.F90
 	${FC} ${FFLAGS} -c $<
 
-all:	rstest
+all:	rstest rs_125_49
 
-OBJS2 = rstest.o init_rs_sf.o encode_rs_sf.o decode_rs_sf.o \
+OBJS1 = rstest.o init_rs_sf.o encode_rs_sf.o decode_rs_sf.o \
 	rs_sf.o ran1.o
-rstest: $(OBJS2)
-	$(FC) -o rstest $(OBJS2)
+rstest: $(OBJS1)
+	$(FC) -o rstest $(OBJS1)
+
+OBJS2 = rs_125_49.o init_rs_sf.o encode_rs_sf.o decode_rs_sf.o \
+	rs_sf.o ran1.o get_crc14.o
+rs_125_49: $(OBJS2)
+	$(FC) -o rs_125_49 $(OBJS2)
 
 init_rs_sf.o: init_rs.c
 	gcc -DBIGSYM=1 $(CFLAGS) -c -o $@ $^
diff --git a/lib/superfox/sfox_params.f90 b/lib/superfox/sfox_params.f90
index 5bc92079b..601db42f9 100644
--- a/lib/superfox/sfox_params.f90
+++ b/lib/superfox/sfox_params.f90
@@ -1,15 +1,16 @@
-  parameter (KK=49)                       !Information symbols
-  parameter (ND1=25)                      !Data symbols before sync waveform
-  parameter (ND2=100)                     !Data symbols after sync waveform
-  parameter (ND=ND1+ND2)                  !Total data symbols (125)
-  parameter (NS=23)                       !Sync symbols (for length)
-  parameter (NSPS=1024)                   !Samples per symbol at 12000 S/s
-  parameter (NSYNC=NS*NSPS)               !Samples in sync waveform (23,552)
-  parameter (NZ=NSPS*(ND+NS))             !Samples in full Tx waveform (151,552)
-  parameter (NMAX=15*12000)               !Samples in iwave (180,000)
-  parameter (NFFT=32768)                  !Length of FFT for sync waveform
-  parameter (NFFT1=2*NSPS)                !Length of FFTs for symbol spectra
-  parameter (MM=7)                        !Bits per symbol
-  parameter (NQ=2**MM)                    !Q, number of MFSK tones
-  parameter (NN=127)                      !Our code is (127,51)
-  parameter (NFZ=3)                       !First zero
+! Our code is RS(127,51).  We puncture two symbols to give (125,49)
+  parameter (NN=127)              !Channel symbols, before puncture
+  parameter (KK=51)               !Information symbols, before puncture
+  parameter (ND1=25)              !Data symbols before sync 
+  parameter (ND2=100)             !Data symbols after sync 
+  parameter (ND=ND1+ND2)          !Total data symbols (125)
+  parameter (NS=24)               !Sync symbols (for length)
+  parameter (NSPS=1024)           !Samples per symbol at 12000 S/s
+  parameter (NSYNC=NS*NSPS)       !Samples in sync waveform (23,552)
+  parameter (NZ=NSPS*(ND+NS))     !Samples in full Tx waveform (151,552)
+  parameter (NMAX=15*12000)       !Samples in iwave (180,000)
+  parameter (NFFT=32768)          !Length of FFT for sync waveform
+  parameter (NFFT1=2*NSPS)        !Length of FFTs for symbol spectra
+  parameter (MM=7)                !Bits per symbol
+  parameter (NQ=2**MM)            !Q, number of MFSK tones
+  parameter (NFZ=3)               !First zero