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-rw-r--r--src/fl2k_iq.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/fl2k_iq.c b/src/fl2k_iq.c
index 0cb9a2f..26fcbfe 100644
--- a/src/fl2k_iq.c
+++ b/src/fl2k_iq.c
@@ -302,8 +302,8 @@ static inline complex double modulate_sample_iq(const int lastwritepos, const co
efficient and pretty good interpolation filter. */
slope = amp - lastamp;
slope = slope * 1.0/ (double) rf_to_baseband_sample_ratio;
- slopebuf[lastwritepos] = slope;
- ampbuf[writepos] = amp;
+ slopebuf[writepos] = slope;
+ ampbuf[writepos] = lastamp;
return amp;
}