diff --git a/lib/ldpc/jtmode_codes/ldpc-128-80-sf13.gen b/lib/ldpc/jtmode_codes/ldpc-128-80-sf13.gen
deleted file mode 100644
index 0c4b115fb..000000000
Binary files a/lib/ldpc/jtmode_codes/ldpc-128-80-sf13.gen and /dev/null differ
diff --git a/lib/ldpc/jtmode_codes/ldpc-128-80-sf13.pchk b/lib/ldpc/jtmode_codes/ldpc-128-80-sf13.pchk
deleted file mode 100644
index 8744f6cf2..000000000
Binary files a/lib/ldpc/jtmode_codes/ldpc-128-80-sf13.pchk and /dev/null differ
diff --git a/lib/ldpc/jtmode_codes/ldpc-search b/lib/ldpc/jtmode_codes/ldpc-search
deleted file mode 100755
index 41786e70a..000000000
--- a/lib/ldpc/jtmode_codes/ldpc-search
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/bin/sh
-# search for a good code
-#  make-ldpc ldpc.pchk $m $n $seed evenboth 2x3/8x4 no4cycle
-n=128
-k=80
-m=$((n-k))
-niterations=10
-
-set -e  # Stop if an error occurs
-
-rand-src  ldpc.src 2 "$k"x100000
-
-for i in `seq 1 1000`
-do
-  seed=$i
-  echo seed $seed
-  make-ldpc ldpc.pchk $m $n $seed evenboth 124x3/4x4 no4cycle
-  make-gen  ldpc.pchk ldpc.gen dense
-  encode    ldpc.pchk ldpc.gen ldpc.src ldpc.enc
-  transmit ldpc.enc ldpc.rec 1 awgn 0.7
-  decode   ldpc.pchk ldpc.rec ldpc.dec awgn 0.70 prprp $niterations
-  verify   ldpc.pchk ldpc.dec ldpc.gen ldpc.src
-done
-
diff --git a/lib/ldpc/jtmode_codes/ldpc-waterfall b/lib/ldpc/jtmode_codes/ldpc-waterfall
deleted file mode 100755
index a38f58940..000000000
--- a/lib/ldpc/jtmode_codes/ldpc-waterfall
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/bin/sh
-# this script characterizes a single code over a range of Eb/N0
-# a baseband signal with mean power = 1 
-# note relationship between noise standard deviation, sigma, and Eb/No:
-# Eb/No = 1/(2*R*sigma^2)
-# If R=1/2, then Eb/No = 1/sigma^2 
-# make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 2x3/8x4 no4cycle
-
-set -e  # Stop if an error occurs
-#set -v  # Echo commands as they are read
-
-n=128
-k=80
-m=$((n-k))
-seed=873
-ntrials=1000000
-niterations=10
-
-rate=$(echo "scale=5; $k/$n" | bc)
-echo n=$n k=$k rate=$rate m=$m
-
-#make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 120x3/8x4 no4cycle
-cp sfpeg2.pchk ldpc.pchk
-
-make-gen  ldpc.pchk ldpc.gen sparse
-rand-src  ldpc.src 1 "$k"x"$ntrials"
-encode    ldpc.pchk ldpc.gen ldpc.src ldpc.enc
-
-for i in `seq -1 10`;
-do
-  db=$(echo "scale=5; $i/2.0" | bc)
-  ebno=$(echo "scale=5; e(0.1*$db*l(10.0))" | bc -l)
-  sigma=$(echo "scale=5; 1/sqrt(2*$rate*$ebno)" | bc)
-  echo db $db ebno $ebno sigma $sigma
-
-  transmit ldpc.enc ldpc.rec 1 awgn $sigma
-  decode   ldpc.pchk ldpc.rec ldpc.dec awgn $sigma prprp $niterations 
-  verify   ldpc.pchk ldpc.dec ldpc.gen ldpc.src
-done