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-rw-r--r--decoder/README.md6
-rwxr-xr-xdecoder/varidecode.py4
2 files changed, 10 insertions, 0 deletions
diff --git a/decoder/README.md b/decoder/README.md
index 6ca6b9a..549def9 100644
--- a/decoder/README.md
+++ b/decoder/README.md
@@ -19,3 +19,9 @@ Principle of operation
Example for RTLSDR: `rtl_sdr -f 145700000 -n 204800000 iq.raw` will capture 100 seconds worth of IQ data.
+References
+----------
+
+https://sdradventure.wordpress.com/2011/10/15/gnuradio-psk31-decoder-part-1/
+
+https://sdradventure.wordpress.com/2011/10/15/gnuradio-psk31-decoder-part-2/
diff --git a/decoder/varidecode.py b/decoder/varidecode.py
index 11b0ed0..4a0d6b2 100755
--- a/decoder/varidecode.py
+++ b/decoder/varidecode.py
@@ -1,4 +1,8 @@
#!/usr/bin/env python3
+#
+# This code is taken from
+# https://sdradventure.wordpress.com/2011/10/15/gnuradio-psk31-decoder-part-1/
+# https://sdradventure.wordpress.com/2011/10/15/gnuradio-psk31-decoder-part-2/
import re
import struct