diff --git a/op25/gr-op25/lib/op25_imbe_frame.h b/op25/gr-op25/lib/op25_imbe_frame.h
index 7c05ba1..0ee0e7a 100644
--- a/op25/gr-op25/lib/op25_imbe_frame.h
+++ b/op25/gr-op25/lib/op25_imbe_frame.h
@@ -10,6 +10,7 @@
 #include <vector>
 
 typedef std::vector<bool> voice_codeword;
+typedef std::vector<uint8_t> packed_codeword;
 typedef const std::vector<bool> const_bit_vector;
 typedef std::vector<bool> bit_vector;
 
@@ -344,6 +345,26 @@ imbe_header_decode(const voice_codeword& cw, uint32_t& u0, uint32_t& u1, uint32_
    return errs;
 }
 
+/*
+ * Pack 88 bit IMBE parameters into uint8_t vector
+ */
+static inline void
+imbe_pack(packed_codeword& cw, uint32_t u0, uint32_t u1, uint32_t u2, uint32_t u3, uint32_t u4, uint32_t u5, uint32_t u6, uint32_t u7)
+{
+	cw.empty();
+	cw.push_back(u0 >> 4);
+	cw.push_back(((u0 & 0xf) << 4) + (u1 >> 8));
+	cw.push_back(u1 & 0xff);
+	cw.push_back(u2 >> 4);
+	cw.push_back(((u2 & 0xf) << 4) + (u3 >> 8));
+	cw.push_back(u3 & 0xff);
+	cw.push_back(u4 >> 3);
+	cw.push_back(((u4 & 0x7) << 5) + (u5 >> 6));
+	cw.push_back(((u5 & 0x3f) << 2) + (u6 >> 9));
+	cw.push_back(u6 >> 1);
+	cw.push_back(((u6 & 0x1) << 7) + (u7 >> 1));
+}
+
 /* APCO IMBE header encoder.
  *
  * given 88 bits of IMBE parameters, construct output 144-bit IMBE codeword
diff --git a/op25/gr-op25_repeater/lib/p25p1_fdma.cc b/op25/gr-op25_repeater/lib/p25p1_fdma.cc
index e239864..f18a99a 100644
--- a/op25/gr-op25_repeater/lib/p25p1_fdma.cc
+++ b/op25/gr-op25_repeater/lib/p25p1_fdma.cc
@@ -625,6 +625,15 @@ p25p1_fdma::process_voice(const bit_vector& A)
 			imbe_deinterleave(A, cw, i);
 			// recover 88-bit IMBE voice code word
 			imbe_header_decode(cw, u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7], E0, ET);
+
+			if (d_debug >= 10) {
+				packed_codeword p_cw;
+				imbe_pack(p_cw, u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7]);
+				sprintf(s,"%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
+						p_cw[0], p_cw[1], p_cw[2], p_cw[3], p_cw[4], p_cw[5],
+					       	p_cw[6], p_cw[7], p_cw[8], p_cw[9], p_cw[10]);
+				fprintf(stderr, "%s IMBE %s\n", logts.get(), s); // print to log in one operation
+			}
 			// output one 32-byte msg per 0.020 sec.
 			// also, 32*9 = 288 byte pkts (for use via UDP)
 			sprintf(s, "%03x %03x %03x %03x %03x %03x %03x %03x\n", u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7]);