diff --git a/testam.sh b/testam.sh
index 539f01a..1206ea3 100755
--- a/testam.sh
+++ b/testam.sh
@@ -2,6 +2,6 @@
 
 #TODO using the AM mode from librpitx
 echo Need to implement
-(while true; do "$2"; done) | csdr convert_i16_f \
+(while true; do cat "$2"; done) | csdr convert_i16_f \
   | csdr gain_ff 4.0 | csdr dsb_fc \
   | sudo ./rpitx -i - -m IQFLOAT -f "$1" -s 48000