diff --git a/kenwood/flex6xxx.c b/kenwood/flex6xxx.c
index 53c348430..5b843f75e 100644
--- a/kenwood/flex6xxx.c
+++ b/kenwood/flex6xxx.c
@@ -224,7 +224,7 @@ static int flex6k_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
   }
 
   sprintf(buf, "MD%c", '0' + kmode);
-  err = kenwood_simple_cmd(rig, buf);
+  err = kenwood_transaction(rig, buf, NULL, 0);
   if (err != RIG_OK)
     return err;
 
@@ -252,7 +252,7 @@ static int flex6k_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
     return -RIG_EINVAL;
   }
 
-  err = kenwood_simple_cmd(rig, buf);
+  err = kenwood_transaction(rig, buf, NULL, 0);
   if (err != RIG_OK)
     return err;
   return RIG_OK;
diff --git a/kenwood/k2.c b/kenwood/k2.c
index aa712486d..50731c095 100644
--- a/kenwood/k2.c
+++ b/kenwood/k2.c
@@ -347,16 +347,16 @@ int k2_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 	if (err != RIG_OK)
 		return err;
 
-	err = kenwood_simple_cmd(rig, "K22");
+	err = kenwood_transaction(rig, "K22", NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
 	/* Set the filter slot */
-	err = kenwood_simple_cmd(rig, fcmd);
+	err = kenwood_transaction(rig, fcmd, NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
-	err = kenwood_simple_cmd(rig, "K20");
+	err = kenwood_transaction(rig, "K20", NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
@@ -387,7 +387,7 @@ int k2_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
 	if (err != RIG_OK)
 		return err;
 
-	err = kenwood_simple_cmd(rig, "K22");
+	err = kenwood_transaction(rig, "K22", NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
@@ -395,7 +395,7 @@ int k2_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
 	if (err != RIG_OK)
 		return err;
 
-	err = kenwood_simple_cmd(rig, "K20");
+	err = kenwood_transaction(rig, "K20", NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
@@ -478,7 +478,7 @@ int k2_probe_mdfw(RIG *rig, struct kenwood_priv_data *priv)
 	/* The K2 extension level has been stored by elecraft_open().  Now set rig
 	 * to K22 for detailed query of mode and filter width values...
 	 */
-	err = kenwood_simple_cmd(rig, "K22");
+	err = kenwood_transaction(rig, "K22", NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
@@ -503,7 +503,7 @@ int k2_probe_mdfw(RIG *rig, struct kenwood_priv_data *priv)
 
 	/* First try to put the K2 into RTTY mode and check if it's available. */
 	priv->k2_md_rtty = 0;		/* Assume RTTY module not installed */
-	err = kenwood_simple_cmd(rig, "MD6");
+	err = kenwood_transaction(rig, "MD6", NULL, 0);
 	if (err != RIG_OK && err != -RIG_ERJCTED)
 		return err;
 	if (RIG_OK == err)
@@ -565,15 +565,15 @@ int k2_mdfw_rest(RIG *rig, const char *mode, const char *fw)
 	if (strlen(mode) != 3 || strlen(fw) != 7)
 		return -RIG_EINVAL;
 
-	err = kenwood_simple_cmd(rig, mode);
+	err = kenwood_transaction(rig, mode, NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
-	err = kenwood_simple_cmd(rig, fw);
+	err = kenwood_transaction(rig, fw, NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
-	err = kenwood_simple_cmd(rig, "K20");
+	err = kenwood_transaction(rig, "K20", NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
@@ -607,14 +607,14 @@ int k2_pop_fw_lst(RIG *rig, const char *cmd)
 		return -RIG_EINVAL;
 
 	/* Set the mode */
-	err = kenwood_simple_cmd(rig, cmd);
+	err = kenwood_transaction(rig, cmd, NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
 	for (f = 1; f < 5; f++) {
 		snprintf(fcmd, 8, "FW0000%d", f);
 
-		err = kenwood_simple_cmd(rig, fcmd);
+		err = kenwood_transaction(rig, fcmd, NULL, 0);
 		if (err != RIG_OK)
 			return err;
 
diff --git a/kenwood/k3.c b/kenwood/k3.c
index f9ff0e62c..e3fae6468 100644
--- a/kenwood/k3.c
+++ b/kenwood/k3.c
@@ -401,7 +401,7 @@ int k3_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 		width = pb_wid;
 
 	sprintf(cmd_s, "BW%04ld", width / 10);
-	err = kenwood_simple_cmd(rig, cmd_s);
+	err = kenwood_transaction(rig, cmd_s, NULL, 0);
 	if (err != RIG_OK)
 		return err;
 
@@ -411,7 +411,7 @@ int k3_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 	if (mode == RIG_MODE_PKTLSB || mode == RIG_MODE_PKTUSB
 	    || mode == RIG_MODE_RTTY || mode == RIG_MODE_RTTYR)
 	  {
-	    err = kenwood_simple_cmd(rig, cmd_m);
+	    err = kenwood_transaction(rig, cmd_m, NULL, 0);
 	    if (err != RIG_OK)
 	      return err;
 	  }
@@ -437,7 +437,7 @@ int k3_set_vfo(RIG *rig, vfo_t vfo)
 
 	switch (vfo) {
 	case RIG_VFO_B:
-		err = kenwood_simple_cmd(rig, "SWT11");
+		err = kenwood_transaction(rig, "SWT11", NULL, 0);
 		if (err != RIG_OK)
 			return err;
 		break;
@@ -473,7 +473,7 @@ int k3_set_ext_level(RIG *rig, vfo_t vfo, token_t token, value_t val)
 	switch(token) {
 	case TOK_RIT_CLR:
 		/* Clear offset */
-		err = kenwood_simple_cmd(rig, "RC");
+		err = kenwood_transaction(rig, "RC", NULL, 0);
 		if (err != RIG_OK)
 			return err;
 
@@ -634,7 +634,7 @@ int k3_set_split_mode(RIG * rig, vfo_t vfo, rmode_t tx_mode, pbwidth_t tx_width)
   }
 
   sprintf(buf, "MD$%c", '0' + kmode);
-  err = kenwood_simple_cmd(rig, buf);
+  err = kenwood_transaction(rig, buf, NULL, 0);
   if (err != RIG_OK)
     return err;
 
@@ -663,7 +663,7 @@ int k3_set_split_mode(RIG * rig, vfo_t vfo, rmode_t tx_mode, pbwidth_t tx_width)
     tx_width = pb_wid;
 
   sprintf(cmd_s, "BW$%04ld", tx_width / 10);
-  err = kenwood_simple_cmd(rig, cmd_s);
+  err = kenwood_transaction(rig, cmd_s, NULL, 0);
   if (err != RIG_OK)
     return err;
 
@@ -672,7 +672,7 @@ int k3_set_split_mode(RIG * rig, vfo_t vfo, rmode_t tx_mode, pbwidth_t tx_width)
    */
   if (tx_mode == RIG_MODE_PKTLSB || tx_mode == RIG_MODE_PKTUSB
       || tx_mode == RIG_MODE_RTTY || tx_mode == RIG_MODE_RTTYR) {
-    err = kenwood_simple_cmd(rig, cmd_m);
+    err = kenwood_transaction(rig, cmd_m, NULL, 0);
     if (err != RIG_OK)
       return err;
   }
@@ -869,7 +869,7 @@ int set_rit_xit(RIG *rig, shortfreq_t rit)
 
 	if (rit == 0) {
 		/* Clear offset and return */
-		err = kenwood_simple_cmd(rig, "RC");
+		err = kenwood_transaction(rig, "RC", NULL, 0);
 		if (err != RIG_OK)
 			return err;
 
@@ -881,7 +881,7 @@ int set_rit_xit(RIG *rig, shortfreq_t rit)
 		offs = (rit < 0) ? '-' : '+';
 		snprintf(cmd, 8, "RO%c%04d", offs, abs((int)rit));
 
-		err = kenwood_simple_cmd(rig, cmd);
+		err = kenwood_transaction(rig, cmd, NULL, 0);
 		if (err != RIG_OK)
 			return err;
 
diff --git a/kenwood/kenwood.c b/kenwood/kenwood.c
index becb5860d..c7e1ede8d 100644
--- a/kenwood/kenwood.c
+++ b/kenwood/kenwood.c
@@ -691,7 +691,7 @@ int kenwood_set_vfo(RIG *rig, vfo_t vfo)
     }
 
   /* set RX VFO */
-  retval = kenwood_simple_cmd(rig, cmdbuf);
+  retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
   if (retval != RIG_OK)
     return retval;
 
@@ -702,7 +702,7 @@ int kenwood_set_vfo(RIG *rig, vfo_t vfo)
 
   /* set TX VFO */
   cmdbuf[1] = 'T';
-  return kenwood_simple_cmd(rig, cmdbuf);
+  return kenwood_transaction(rig, cmdbuf, NULL, 0);
 }
 
 
@@ -735,7 +735,7 @@ int kenwood_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
 
     /* set RX VFO */
     sprintf(cmdbuf, "FR%c", vfo_function);
-    retval = kenwood_simple_cmd(rig, cmdbuf);
+    retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
     if (retval != RIG_OK)
       return retval;
   }
@@ -761,7 +761,7 @@ int kenwood_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
   }
   /* set TX VFO */
   sprintf(cmdbuf, "FT%c", vfo_function);
-  retval = kenwood_simple_cmd(rig, cmdbuf);
+  retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
   if (retval != RIG_OK)
     return retval;
 
@@ -788,7 +788,7 @@ int kenwood_set_split(RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
   int retval;
 
   sprintf(cmdbuf, "SP%c", RIG_SPLIT_ON == split ? '1' : '0');
-  retval = kenwood_simple_cmd(rig, cmdbuf);
+  retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
   if (retval != RIG_OK)
     return retval;
 
@@ -933,7 +933,7 @@ int kenwood_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
   }
   sprintf(freqbuf, "F%c%011ld", vfo_letter, (long)freq);
 
-  int err = kenwood_simple_cmd(rig, freqbuf);
+  int err = kenwood_transaction(rig, freqbuf, NULL, 0);
 
   struct kenwood_priv_data * priv = rig->state.priv;
   if (RIG_OK == err && RIG_MODEL_TS590S == rig->caps->rig_model && priv->fw_rev_uint <= 107 && ('A' == vfo_letter || 'B' == vfo_letter))
@@ -967,7 +967,7 @@ int kenwood_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
       {
         return err;
       }
-    err = kenwood_simple_cmd (rig, freqbuf);
+    err = kenwood_transaction (rig, freqbuf, NULL, 0);
         }
     }
 
@@ -1078,17 +1078,17 @@ int kenwood_set_rit(RIG * rig, vfo_t vfo, shortfreq_t rit)
   int retval, i;
 
   if (rit == 0)
-    return kenwood_simple_cmd(rig, "RC");
-
+    return kenwood_transaction(rig, "RC", NULL, 0);
+  
   sprintf(buf, "R%c", (rit > 0) ? 'U' : 'D');
 
-  retval = kenwood_simple_cmd(rig, "RC");
+  retval = kenwood_transaction(rig, "RC", NULL, 0);
   if (retval != RIG_OK)
     return retval;
 
   for (i = 0; i < abs(rint(rit/10)); i++)
-    retval = kenwood_simple_cmd(rig, buf);
-
+    retval = kenwood_transaction(rig, buf, NULL, 0);
+  
   return retval;
 }
 
@@ -1122,7 +1122,7 @@ int kenwood_scan(RIG *rig, vfo_t vfo, scan_t scan, int ch)
   if (!rig)
     return -RIG_EINVAL;
 
-  return kenwood_simple_cmd(rig, scan == RIG_SCAN_STOP ? "SC0" : "SC1");
+  return kenwood_transaction(rig, scan == RIG_SCAN_STOP ? "SC0" : "SC1", NULL, 0);
 }
 
 /*
@@ -1156,7 +1156,7 @@ static int kenwood_set_filter(RIG *rig, pbwidth_t width)
   else
     cmd = "FL002002";
 
-  return kenwood_simple_cmd(rig, cmd);
+  return kenwood_transaction(rig, cmd, NULL, 0);
 }
 
 /*
@@ -1208,7 +1208,7 @@ int kenwood_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
   }
 
   sprintf(buf, "MD%c", '0' + kmode);
-  err = kenwood_simple_cmd(rig, buf);
+  err = kenwood_transaction(rig, buf, NULL, 0);
   if (err != RIG_OK)
     return err;
 
@@ -1217,7 +1217,7 @@ int kenwood_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
     {
       /* supports DATA sub modes - see above */
       sprintf (buf, "DA%c", data_mode);
-      int retval = kenwood_simple_cmd (rig, buf);
+      int retval = kenwood_transaction (rig, buf, NULL, 0);
       if (RIG_OK != retval)
         {
     return retval;
@@ -1466,7 +1466,7 @@ int kenwood_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
     return -RIG_EINVAL;
   }
 
-  return kenwood_simple_cmd(rig, levelbuf);
+  return kenwood_transaction(rig, levelbuf, NULL, 0);
 }
 
 int get_kenwood_level(RIG *rig, const char *cmd, int cmd_len, float *f)
@@ -1667,59 +1667,59 @@ int kenwood_set_func(RIG *rig, vfo_t vfo, setting_t func, int status)
   switch (func) {
   case RIG_FUNC_NB:
     sprintf(buf, "NB%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_ABM:
     sprintf(buf, "AM%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_COMP:
     sprintf(buf, "PR%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_TONE:
     sprintf(buf, "TO%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_TSQL:
     sprintf(buf, "CT%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_VOX:
     sprintf(buf, "VX%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_FAGC:
     sprintf(buf, "GT00%c", (status == 0) ? '4' : '2');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_NR:
     sprintf(buf, "NR%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_BC:
     sprintf(buf, "BC%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_ANF:
     sprintf(buf, "NT%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_LOCK:
     sprintf(buf, "LK%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_AIP:
     sprintf(buf, "MX%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_RIT:
     sprintf(buf, "RT%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case RIG_FUNC_XIT:
     sprintf(buf, "XT%c", (status == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   default:
     rig_debug(RIG_DEBUG_ERR, "Unsupported set_func %#x", func);
@@ -1847,7 +1847,7 @@ int kenwood_set_ctcss_tone(RIG *rig, vfo_t vfo, tone_t tone)
 /* TODO: replace menu no 57 by a define */
   sprintf(tonebuf, "EX%03d%04d", 57, i+1);
 
-  return kenwood_simple_cmd(rig, tonebuf);
+  return kenwood_transaction(rig, tonebuf, NULL, 0);
 }
 
 int kenwood_set_ctcss_tone_tn(RIG *rig, vfo_t vfo, tone_t tone)
@@ -1872,7 +1872,7 @@ int kenwood_set_ctcss_tone_tn(RIG *rig, vfo_t vfo, tone_t tone)
 
   sprintf(buf, "TN%02d", i + 1);
 
-  return kenwood_simple_cmd(rig, buf);
+  return kenwood_transaction(rig, buf, NULL, 0);
 }
 
 /*
@@ -1943,7 +1943,7 @@ int kenwood_set_ctcss_sql(RIG *rig, vfo_t vfo, tone_t tone)
 
   sprintf(buf, "CN%02d", i + 1);
 
-  return kenwood_simple_cmd(rig, buf);
+  return kenwood_transaction(rig, buf, NULL, 0);
 }
 
 int kenwood_get_ctcss_sql(RIG *rig, vfo_t vfo, tone_t *tone)
@@ -2044,7 +2044,7 @@ int kenwood_set_ant_no_ack(RIG * rig, vfo_t vfo, ant_t ant)
     return -RIG_EINVAL;
   }
 
-  return kenwood_simple_cmd(rig, cmd);
+  return kenwood_transaction(rig, cmd, NULL, 0);
 }
 
 /*
@@ -2112,7 +2112,7 @@ int kenwood_set_ptt(RIG *rig, vfo_t vfo, ptt_t ptt)
     case RIG_PTT_OFF: ptt_cmd = "RX"; break;
     default: return -RIG_EINVAL;
   }
-  return kenwood_simple_cmd(rig, ptt_cmd);
+  return kenwood_transaction(rig, ptt_cmd, NULL, 0);
 }
 
 int kenwood_set_ptt_safe(RIG *rig, vfo_t vfo, ptt_t ptt)
@@ -2132,8 +2132,8 @@ int kenwood_set_ptt_safe(RIG *rig, vfo_t vfo, ptt_t ptt)
   if (current_ptt == ptt)
     return RIG_OK;
 
-  return kenwood_simple_cmd(rig,
-    (ptt == RIG_PTT_ON) ? "TX" : "RX");
+  return kenwood_transaction(rig,
+                             (ptt == RIG_PTT_ON) ? "TX" : "RX", NULL, 0);
 }
 
 
@@ -2262,7 +2262,7 @@ int kenwood_reset(RIG *rig, reset_t reset)
   sprintf(rstbuf, "SR%c", rst);
 
   /* this command has no answer */
-  return kenwood_simple_cmd(rig, rstbuf);
+  return kenwood_transaction(rig, rstbuf, NULL, 0);
 }
 
 /*
@@ -2298,7 +2298,7 @@ int kenwood_send_morse(RIG *rig, vfo_t vfo, const char *msg)
 
     /* the command must consist of 28 bytes */
     sprintf(morsebuf, "KY %-24s", m2);
-    retval = kenwood_simple_cmd(rig, morsebuf);
+    retval = kenwood_transaction(rig, morsebuf, NULL, 0);
     if (retval != RIG_OK)
       return retval;
 
@@ -2321,16 +2321,16 @@ int kenwood_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op)
 
   switch(op) {
   case RIG_OP_UP:
-    return kenwood_simple_cmd(rig, "UP");
+    return kenwood_transaction(rig, "UP", NULL, 0);
 
   case RIG_OP_DOWN:
-    return kenwood_simple_cmd(rig, "DN");
+    return kenwood_transaction(rig, "DN", NULL, 0);
 
   case RIG_OP_BAND_UP:
-    return kenwood_simple_cmd(rig, "BU");
+    return kenwood_transaction(rig, "BU", NULL, 0);
 
   case RIG_OP_BAND_DOWN:
-    return kenwood_simple_cmd(rig, "BD");
+    return kenwood_transaction(rig, "BD", NULL, 0);
 
   default:
     rig_debug(RIG_DEBUG_ERR, "%s: unsupported op %#x\n",
@@ -2357,7 +2357,7 @@ int kenwood_set_mem(RIG *rig, vfo_t vfo, int ch)
    */
   sprintf(buf, "MC %02d", ch);
 
-  return kenwood_simple_cmd(rig, buf);
+  return kenwood_transaction(rig, buf, NULL, 0);
 }
 
 /*
@@ -2558,7 +2558,7 @@ int kenwood_set_channel(RIG *rig, const channel_t *chan)
           chan->ctcss_tone ? '1' : '0',
           chan->ctcss_tone ? (tone + 1) : 0);
 
-  err = kenwood_simple_cmd(rig, buf);
+  err = kenwood_transaction(rig, buf, NULL, 0);
   if (err != RIG_OK)
     return err;
 
@@ -2571,7 +2571,7 @@ int kenwood_set_channel(RIG *rig, const channel_t *chan)
           chan->ctcss_tone ? '1' : '0',
           chan->ctcss_tone ? (tone + 1) : 0);
 
-  return kenwood_simple_cmd(rig, buf);
+  return kenwood_transaction(rig, buf, NULL, 0);
 }
 
 int kenwood_set_ext_parm(RIG *rig, token_t token, value_t val)
@@ -2585,19 +2585,19 @@ int kenwood_set_ext_parm(RIG *rig, token_t token, value_t val)
 
   switch (token) {
   case TOK_VOICE:
-    return kenwood_simple_cmd(rig, "VR");
+    return kenwood_transaction(rig, "VR", NULL, 0);
 
   case TOK_FINE:
     sprintf(buf, "FS%c", (val.i == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case TOK_XIT:
     sprintf(buf, "XT%c", (val.i == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
 
   case TOK_RIT:
     sprintf(buf, "RT%c", (val.i == 0) ? '0' : '1');
-    return kenwood_simple_cmd(rig, buf);
+    return kenwood_transaction(rig, buf, NULL, 0);
   }
 
   return -RIG_EINVAL;
diff --git a/kenwood/kenwood.h b/kenwood/kenwood.h
index 99232c639..213a51f7f 100644
--- a/kenwood/kenwood.h
+++ b/kenwood/kenwood.h
@@ -203,10 +203,4 @@ static int inline kenwood_simple_transaction(RIG *rig, const char *cmd, size_t e
   return kenwood_safe_transaction(rig, cmd, priv->info, KENWOOD_MAX_BUF_LEN, expected);
 }
 
-/* no answer needed at all */
-static int inline kenwood_simple_cmd(RIG *rig, const char *cmd)
-{
-  return kenwood_safe_transaction(rig, cmd, NULL, 0, 0);
-}
-
 #endif /* _KENWOOD_H */
diff --git a/kenwood/th.c b/kenwood/th.c
index f7a9163ef..7156e7891 100644
--- a/kenwood/th.c
+++ b/kenwood/th.c
@@ -197,7 +197,7 @@ th_set_freq(RIG *rig, vfo_t vfo, freq_t freq)
 	freq_sent = freq_sent >= MHz(470) ? (round(freq_sent/10000)*10000) : freq_sent;
 	sprintf(buf, "FQ %011"PRIll",%X", (int64_t) freq_sent, step);
 
-	return kenwood_simple_cmd(rig, buf);
+	return kenwood_transaction(rig, buf, NULL, 0);
 }
 
 /*
@@ -270,7 +270,7 @@ th_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 
 	sprintf(mdbuf, "MD %c", kmode);
 
-	retval = kenwood_simple_cmd(rig, mdbuf);
+	retval = kenwood_transaction(rig, mdbuf, NULL, 0);
 	if (retval != RIG_OK)
 		return retval;
 
@@ -403,7 +403,7 @@ th_set_vfo(RIG *rig, vfo_t vfo)
 		return kenwood_wrong_vfo(__func__, vfo);
 	}
 
-	return kenwood_simple_cmd(rig, cmd);
+	return kenwood_transaction(rig, cmd, NULL, 0);
 }
 
 int
@@ -545,7 +545,7 @@ int tm_set_vfo_bc2 (RIG *rig, vfo_t vfo)
 	}
 
 	sprintf(vfobuf, "VMC %d,%d", vfonum, vfomode);
-	retval = kenwood_simple_cmd(rig, vfobuf);
+	retval = kenwood_transaction(rig, vfobuf, NULL, 0);
 	if (retval != RIG_OK)
         return retval;
 
@@ -553,7 +553,7 @@ int tm_set_vfo_bc2 (RIG *rig, vfo_t vfo)
         return RIG_OK;
 
     sprintf(vfobuf, "BC %d,%d", vfonum, txvfonum);
-    retval = kenwood_simple_cmd(rig, vfobuf);
+    retval = kenwood_transaction(rig, vfobuf, NULL, 0);
 	if (retval != RIG_OK)
         return retval;
 
@@ -596,12 +596,12 @@ int th_set_split_vfo (RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
 
     /* Set VFO mode. To be done for TX vfo also? */
 	sprintf(vfobuf, "VMC %d,0", vfonum);
-	retval = kenwood_simple_cmd(rig, vfobuf);
+	retval = kenwood_transaction(rig, vfobuf, NULL, 0);
 	if (retval != RIG_OK)
         return retval;
 
     sprintf(vfobuf, "BC %d,%d", vfonum, txvfonum);
-    retval = kenwood_simple_cmd(rig, vfobuf);
+    retval = kenwood_transaction(rig, vfobuf, NULL, 0);
 	if (retval != RIG_OK)
         return retval;
 
@@ -649,7 +649,7 @@ int th_get_split_vfo (RIG *rig, vfo_t vfo, split_t *split, vfo_t *txvfo)
 int
 th_set_trn(RIG *rig, int trn)
 {
-	return kenwood_simple_cmd(rig, (trn == RIG_TRN_RIG) ? "AI 1" : "AI 0");
+	return kenwood_transaction(rig, (trn == RIG_TRN_RIG) ? "AI 1" : "AI 0", NULL, 0);
 }
 
 /*
@@ -743,7 +743,7 @@ th_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status)
 
 static int th_tburst(RIG *rig, vfo_t vfo, int status)
 {
-	return kenwood_simple_cmd(rig, (status == 1) ? "TT" : "RX");
+	return kenwood_transaction(rig, (status == 1) ? "TT" : "RX", NULL, 0);
 }
 
 /*
@@ -762,7 +762,7 @@ static int th_set_kenwood_func(RIG *rig, const char *cmd, int status)
 	buf[BUFSZ-1] = '\0';
 	strncat(buf, status ? " 1" : " 0", BUFSZ-1);
 
-	return kenwood_simple_cmd(rig, buf);
+	return kenwood_transaction(rig, buf, NULL, 0);
 }
 
 
@@ -897,12 +897,12 @@ th_set_parm(RIG *rig, setting_t parm, value_t val)
 
 	case RIG_PARM_APO:
 		if (val.i > 30)
-			return kenwood_simple_cmd(rig, "APO 2");
+			return kenwood_transaction(rig, "APO 2", NULL, 0);
 		else if (val.i > 0)
-			return kenwood_simple_cmd(rig, "APO 1");
+			return kenwood_transaction(rig, "APO 1", NULL, 0);
 		else
-			return kenwood_simple_cmd(rig, "APO 0");
-
+			return kenwood_transaction(rig, "APO 0", NULL, 0);
+		
 	default:
 		rig_debug(RIG_DEBUG_ERR, "%s: Unsupported parm %#x\n", __func__, parm);
 		return -RIG_EINVAL;
@@ -1084,29 +1084,29 @@ int th_set_level (RIG *rig, vfo_t vfo, setting_t level, value_t val)
 			(int)(val.f*(rig->caps->level_gran[LVL_RFPOWER].max.i - rig->caps->level_gran[LVL_RFPOWER].min.i))
 			+ rig->caps->level_gran[LVL_RFPOWER].min.i);
 
-		return kenwood_simple_cmd(rig, buf);
+		return kenwood_transaction(rig, buf, NULL, 0);
 
 	case RIG_LEVEL_SQL :
 		sprintf(buf, "SQ %c,%02x", vch,
 			(int)(val.f*(rig->caps->level_gran[LVL_SQL].max.i-rig->caps->level_gran[LVL_SQL].min.i))
 			+ rig->caps->level_gran[LVL_SQL].min.i);
-		return kenwood_simple_cmd(rig, buf);
+		return kenwood_transaction(rig, buf, NULL, 0);
 
 	case RIG_LEVEL_AF :
 		sprintf(buf, "AG %c,%02x", vch, (int)(val.f * 32.0));
-		return kenwood_simple_cmd(rig, buf);
+		return kenwood_transaction(rig, buf, NULL, 0);
 
 	case RIG_LEVEL_ATT :
 		sprintf(buf, "ATT %c", val.i ? '1' : '0');
-		return kenwood_simple_cmd(rig, buf);
+		return kenwood_transaction(rig, buf, NULL, 0);
 
 	case RIG_LEVEL_BALANCE :
 		sprintf(buf, "BAL %c", '4' - (int) (val.f * ('4'-'0')));
-		return kenwood_simple_cmd(rig, buf);
+		return kenwood_transaction(rig, buf, NULL, 0);
 
 	case RIG_LEVEL_VOXGAIN:
 		sprintf(buf, "VXG %d", (int) (val.f * 9));
-		return kenwood_simple_cmd(rig, buf);
+		return kenwood_transaction(rig, buf, NULL, 0);
 
 	case RIG_LEVEL_VOXDELAY: /* "VXD" */
 		return -RIG_ENIMPL;
@@ -1284,7 +1284,7 @@ th_set_dcs_sql(RIG *rig, vfo_t vfo, tone_t code)
 	caps = rig->caps;
 
 	if (code == 0) {
-		return kenwood_simple_cmd(rig, "DCS 0");
+		return kenwood_transaction(rig, "DCS 0", NULL, 0);
 	}
 
 	for (i = 0; caps->dcs_list[i] != 0 && i < RIG_CODEMAX; i++) {
@@ -1295,12 +1295,12 @@ th_set_dcs_sql(RIG *rig, vfo_t vfo, tone_t code)
 	if (caps->dcs_list[i] != code)
 		return -RIG_EINVAL;
 
-	retval = kenwood_simple_cmd(rig, "DCS 1");
+	retval = kenwood_transaction(rig, "DCS 1", NULL, 0);
 	if (retval != RIG_OK)
 		return retval;
 
 	sprintf(codebuf, "DCSN %04d", (i+1)*10);
-	retval = kenwood_simple_cmd(rig, codebuf);
+	retval = kenwood_transaction(rig, codebuf, NULL, 0);
 	if (retval != RIG_OK)
 		return retval;
 
@@ -1485,7 +1485,7 @@ th_set_ptt(RIG *rig, vfo_t vfo, ptt_t ptt)
 {
 	rig_debug(RIG_DEBUG_TRACE, "%s: called\n", __func__);
 
-	return kenwood_simple_cmd(rig, (ptt == RIG_PTT_ON) ? "TX" : "RX");
+	return kenwood_transaction(rig, (ptt == RIG_PTT_ON) ? "TX" : "RX", NULL, 0);
 }
 
 int th_get_dcd(RIG *rig, vfo_t vfo, dcd_t *dcd)
@@ -1542,13 +1542,13 @@ int th_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op)
 
 	switch (op) {
 	case RIG_OP_UP:
-		return kenwood_simple_cmd(rig, "UP");
+		return kenwood_transaction(rig, "UP", NULL, 0);
 
 	case RIG_OP_DOWN:
-		return kenwood_simple_cmd(rig, "DW");
+		return kenwood_transaction(rig, "DW", NULL, 0);
 
 	case RIG_OP_TO_VFO:
-		return kenwood_simple_cmd(rig, "MSH");
+		return kenwood_transaction(rig, "MSH", NULL, 0);
 
 	default:
 		return -RIG_EINVAL;
@@ -2012,7 +2012,7 @@ int th_set_ant(RIG * rig, vfo_t vfo, ant_t ant)
 		return -RIG_EINVAL;
 	}
 
-	return kenwood_simple_cmd(rig, cmd);
+	return kenwood_transaction(rig, cmd, NULL, 0);
 }
 
 
@@ -2046,10 +2046,10 @@ int th_reset(RIG *rig, reset_t reset)
 {
 	switch(reset) {
 	case RIG_RESET_VFO:
-		return kenwood_simple_cmd(rig, "SR 1");
+		return kenwood_transaction(rig, "SR 1", NULL, 0);
 
 	case RIG_RESET_MASTER:
-		return kenwood_simple_cmd(rig, "SR 3");
+		return kenwood_transaction(rig, "SR 3", NULL, 0);
 
 	default:
 		rig_debug(RIG_DEBUG_ERR, "%s: unsupported reset %d\n",
diff --git a/kenwood/thd72.c b/kenwood/thd72.c
index 7003f05a9..e8e3ff5d5 100644
--- a/kenwood/thd72.c
+++ b/kenwood/thd72.c
@@ -183,9 +183,9 @@ int thd72_open(RIG *rig)
 {
     int ret;
 
-    kenwood_simple_cmd(rig, "");
+    kenwood_transaction(rig, "", NULL, 0);
 
-    ret = kenwood_simple_cmd(rig, "TC1");
+    ret = kenwood_transaction(rig, "TC1", NULL, 0);
     if (ret != RIG_OK)
         return ret;
 
@@ -247,7 +247,7 @@ int thd72_get_chan_all_cb (RIG * rig, chan_cb_t chan_cb, rig_ptr_t arg)
     char block[BLOCK_SZ];
     char resp[CMD_SZ];
 
-    ret = kenwood_simple_cmd(rig, "0M PROGRAM");
+    ret = kenwood_transaction(rig, "0M PROGRAM", NULL, 0);
     if (ret != RIG_OK)
         return ret;
 
diff --git a/kenwood/thf6a.c b/kenwood/thf6a.c
index d3bca9e0f..823f78740 100644
--- a/kenwood/thf6a.c
+++ b/kenwood/thf6a.c
@@ -337,16 +337,16 @@ int thf6a_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op)
 
 	switch(op) {
 	case RIG_OP_UP:
-		return kenwood_simple_cmd(rig, "UP");
+		return kenwood_transaction(rig, "UP", NULL, 0);
 
 	case RIG_OP_DOWN:
-		return kenwood_simple_cmd(rig, "DW");
+		return kenwood_transaction(rig, "DW", NULL, 0);
 /*	Not implemented!
 	case RIG_OP_BAND_UP:
-		return kenwood_simple_cmd(rig, "BU");
+		return kenwood_transaction(rig, "BU", NULL, 0);
 
 	case RIG_OP_BAND_DOWN:
-		return kenwood_simple_cmd(rig, "BD");
+		return kenwood_transaction(rig, "BD", NULL, 0);
 */
 	default:
 		rig_debug(RIG_DEBUG_ERR, "%s: unsupported op %#x\n",
diff --git a/kenwood/thf7.c b/kenwood/thf7.c
index c5886b3be..fd2088eeb 100644
--- a/kenwood/thf7.c
+++ b/kenwood/thf7.c
@@ -331,16 +331,16 @@ int thf7e_vfo_op(RIG *rig, vfo_t vfo, vfo_op_t op)
 
 	switch(op) {
 	case RIG_OP_UP:
-		return kenwood_simple_cmd(rig, "UP");
+		return kenwood_transaction(rig, "UP", NULL, 0);
 
 	case RIG_OP_DOWN:
-		return kenwood_simple_cmd(rig, "DW");
+		return kenwood_transaction(rig, "DW", NULL, 0);
 /*	Not implemented!
 	case RIG_OP_BAND_UP:
-		return kenwood_simple_cmd(rig, "BU");
+		return kenwood_transaction(rig, "BU", NULL, 0);
 
 	case RIG_OP_BAND_DOWN:
-		return kenwood_simple_cmd(rig, "BD");
+		return kenwood_transaction(rig, "BD", NULL, 0);
 */
 	default:
 		rig_debug(RIG_DEBUG_ERR, "%s: unsupported op %#x\n",
diff --git a/kenwood/tmd710.c b/kenwood/tmd710.c
index e6d1cde6e..47f7c115b 100644
--- a/kenwood/tmd710.c
+++ b/kenwood/tmd710.c
@@ -940,7 +940,7 @@ int tmd710_set_vfo (RIG *rig, vfo_t vfo)
 	}
 
 	snprintf(vfobuf,9, "VM %d,%d", vfonum, vfomode);
-	retval = kenwood_simple_cmd(rig, vfobuf);
+	retval = kenwood_transaction(rig, vfobuf, NULL, 0);
 	if (retval != RIG_OK)
         return retval;
 
@@ -948,7 +948,7 @@ int tmd710_set_vfo (RIG *rig, vfo_t vfo)
         return RIG_OK;
 
     snprintf(vfobuf, 15, "BC %d,%d", vfonum, txvfonum);
-    retval = kenwood_simple_cmd(rig, vfobuf);
+    retval = kenwood_transaction(rig, vfobuf, NULL, 0);
 	if (retval != RIG_OK)
         return retval;
 
diff --git a/kenwood/transfox.c b/kenwood/transfox.c
index 79bd03454..9fc50d71c 100644
--- a/kenwood/transfox.c
+++ b/kenwood/transfox.c
@@ -219,24 +219,24 @@ int transfox_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
 
 	case RIG_LEVEL_ATT:
 		if (val.i == 0) {
-			ret = kenwood_simple_cmd(rig, "C30");
+			ret = kenwood_transaction(rig, "C30", NULL, 0);
 			if (ret != RIG_OK)
 				return ret;
-			ret = kenwood_simple_cmd(rig, "C20");
+			ret = kenwood_transaction(rig, "C20", NULL, 0);
 			if (ret != RIG_OK)
 				return ret;
         } else if (val.i == 10) {
-				ret = kenwood_simple_cmd(rig, "C30");
+			ret = kenwood_transaction(rig, "C30", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
-				ret = kenwood_simple_cmd(rig, "C21");
+				ret = kenwood_transaction(rig, "C21", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
         } else if (val.i == 20) {
-				ret = kenwood_simple_cmd(rig, "C31");
+			ret = kenwood_transaction(rig, "C31", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
-				ret = kenwood_simple_cmd(rig, "C21");
+				ret = kenwood_transaction(rig, "C21", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
 		}
@@ -244,24 +244,24 @@ int transfox_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
 
 	case RIG_LEVEL_PREAMP:
 		if (val.i == 0) {
-			ret = kenwood_simple_cmd(rig, "C30");
+			ret = kenwood_transaction(rig, "C30", NULL, 0);
 			if (ret != RIG_OK)
 				return ret;
-			ret = kenwood_simple_cmd(rig, "C20");
+			ret = kenwood_transaction(rig, "C20", NULL, 0);
 			if (ret != RIG_OK)
 				return ret;
         } else if (val.i == 22) {
-				ret = kenwood_simple_cmd(rig, "C30");
+			ret = kenwood_transaction(rig, "C30", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
-				ret = kenwood_simple_cmd(rig, "C22");
+				ret = kenwood_transaction(rig, "C22", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
         } else if (val.i == 44) {
-				ret = kenwood_simple_cmd(rig, "C32");
+			ret = kenwood_transaction(rig, "C32", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
-				ret = kenwood_simple_cmd(rig, "C22");
+				ret = kenwood_transaction(rig, "C22", NULL, 0);
 				if (ret != RIG_OK)
 					return ret;
 		}
diff --git a/kenwood/ts140.c b/kenwood/ts140.c
index 9d8a51fbc..d8217f744 100644
--- a/kenwood/ts140.c
+++ b/kenwood/ts140.c
@@ -66,7 +66,7 @@ static int ts140_set_vfo(RIG *rig, vfo_t vfo)
                 }
 
                 sprintf(cmdbuf, "FN%c", vfo_function); /* The 680 and 140 need this to set the VFO on the radio */
-                return kenwood_simple_cmd(rig, cmdbuf);
+                return kenwood_transaction(rig, cmdbuf, NULL, 0);
 }
 
 /*
diff --git a/kenwood/ts480.c b/kenwood/ts480.c
index 0f499bf09..11c413ca6 100644
--- a/kenwood/ts480.c
+++ b/kenwood/ts480.c
@@ -136,7 +136,7 @@ kenwood_ts480_set_level (RIG * rig, vfo_t vfo, setting_t level, value_t val)
       return -RIG_EINVAL;
     }
 
-  return kenwood_simple_cmd(rig, levelbuf);
+  return kenwood_transaction(rig, levelbuf, NULL, 0);
 }
 
 
diff --git a/kenwood/ts570.c b/kenwood/ts570.c
index 2ef49e494..f854b34d4 100644
--- a/kenwood/ts570.c
+++ b/kenwood/ts570.c
@@ -153,7 +153,7 @@ static int ts570_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
      return -RIG_EINVAL;
 
   sprintf(buf, "MD%c", kmode);
-  retval = kenwood_simple_cmd(rig, buf);
+  retval = kenwood_transaction(rig, buf, NULL, 0);
   if (retval != RIG_OK) return retval;
 
   switch (mode)
@@ -163,7 +163,7 @@ static int ts570_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
     case RIG_MODE_RTTY:
     case RIG_MODE_RTTYR:
       sprintf(buf, "FW%04d", (int)width);
-      retval = kenwood_simple_cmd(rig, buf);
+      retval = kenwood_transaction(rig, buf, NULL, 0);
       if (retval != RIG_OK) return retval;
       break;
     case RIG_MODE_USB:
@@ -171,7 +171,7 @@ static int ts570_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
     case RIG_MODE_FM:
     case RIG_MODE_AM:
       sprintf(buf, "SL%02d", (int)width/50);
-      retval = kenwood_simple_cmd(rig, buf);
+      retval = kenwood_transaction(rig, buf, NULL, 0);
       if (retval != RIG_OK) return retval;
       break;
     default:
@@ -199,10 +199,10 @@ int ts570_set_func(RIG *rig, vfo_t vfo, setting_t func, int status)
 			if ((status < 0) || (status >2))
 				return -RIG_EINVAL;
 			sprintf(fctbuf,"NR%01d", status);
-			return kenwood_simple_cmd(rig, fctbuf);
+			return kenwood_transaction(rig, fctbuf, NULL, 0);
 		case RIG_FUNC_TUNER:
 			sprintf(fctbuf,"AC %c0", (0==status)?'0':'1');
- 			return kenwood_simple_cmd(rig, fctbuf);
+ 			return kenwood_transaction(rig, fctbuf, NULL, 0);
 
 		default:
 			return kenwood_set_func(rig, vfo, func, status);
@@ -291,19 +291,19 @@ ts570_set_level (RIG * rig, vfo_t vfo, setting_t level, value_t val)
 	    }
 	    else
 	    	return -RIG_EINVAL;
-        return kenwood_simple_cmd(rig, levelbuf);
+	return kenwood_transaction(rig, levelbuf, NULL, 0);
 
     case RIG_LEVEL_RFPOWER:
       /* level for TS570D is from 0.. 100W in SSB and CW */
       kenwood_val = val.f * 100;
       sprintf (levelbuf, "PC%03d", kenwood_val);
-      return kenwood_simple_cmd(rig, levelbuf);
+      return kenwood_transaction(rig, levelbuf, NULL, 0);
 
     case RIG_LEVEL_MICGAIN:
       /* level is from 0..100 */
       kenwood_val = val.f * 100;
       sprintf (levelbuf, "MG%03d", kenwood_val);
-      return kenwood_simple_cmd(rig, levelbuf);
+      return kenwood_transaction(rig, levelbuf, NULL, 0);
 
     default:
       return kenwood_set_level (rig, vfo, level, val);
@@ -451,7 +451,7 @@ int ts570_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
 		if (cmd_len < 0)
 			return -RIG_ETRUNC;
 
-		retval = kenwood_simple_cmd(rig, cmdbuf);
+		retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
 		if (retval != RIG_OK)
 			return retval;
 	}
@@ -471,7 +471,7 @@ int ts570_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
 		if (cmd_len < 0)
 			return -RIG_ETRUNC;
 
-		retval = kenwood_simple_cmd(rig, cmdbuf);
+		retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
 		if (retval != RIG_OK)
 			return retval;
 
@@ -488,7 +488,7 @@ int ts570_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t txvfo)
 			if (cmd_len < 0)
 				return -RIG_ETRUNC;
 
-			retval = kenwood_simple_cmd(rig, cmdbuf);
+			retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
 			if (retval != RIG_OK)
 				return retval;
 		}
diff --git a/kenwood/ts680.c b/kenwood/ts680.c
index fdf656c10..fcba72501 100644
--- a/kenwood/ts680.c
+++ b/kenwood/ts680.c
@@ -66,7 +66,7 @@ static int ts680_set_vfo(RIG *rig, vfo_t vfo)
                 }
 
                 sprintf(cmdbuf, "FN%c", vfo_function); /* The 680 and 140 need this to set the VFO on the radio */
-                return kenwood_simple_cmd(rig, cmdbuf);
+                return kenwood_transaction(rig, cmdbuf, NULL, 0);
 }
 
 /*
diff --git a/kenwood/ts870s.c b/kenwood/ts870s.c
index dd74583f6..6b880dad4 100644
--- a/kenwood/ts870s.c
+++ b/kenwood/ts870s.c
@@ -182,7 +182,7 @@ static int ts870s_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
   }
 
   sprintf(buf, "MD%c", kmode);
-  retval = kenwood_simple_cmd(rig, buf);
+  retval = kenwood_transaction(rig, buf, NULL, 0);
   if (retval != RIG_OK) return retval;
 
   if (RIG_PASSBAND_NORMAL != width) /* leave well alone if default passband requested */
@@ -200,7 +200,7 @@ static int ts870s_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 	      mode_default_hpf = 100;
 	    }
 	  sprintf(buf, "IS %04d", (int)(width + mode_default_hpf));
-	  retval = kenwood_simple_cmd(rig, buf);
+	  retval = kenwood_transaction(rig, buf, NULL, 0);
 	}
       else
 	{
@@ -209,7 +209,7 @@ static int ts870s_set_mode(RIG *rig, vfo_t vfo, rmode_t mode, pbwidth_t width)
 	   * so we don't need to check the value...
 	   */
 	  sprintf(buf, "FW%04d", (int)width/10);
-	  retval = kenwood_simple_cmd(rig, buf);
+	  retval = kenwood_transaction(rig, buf, NULL, 0);
 	}
     }
 
@@ -225,7 +225,7 @@ int ts870s_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
 	case RIG_LEVEL_RFPOWER:
 		intval = val.f * 100;
 		sprintf(levelbuf, "PC%03d", intval);
-		return kenwood_simple_cmd(rig, levelbuf);
+		return kenwood_transaction(rig, levelbuf, NULL, 0);
 		break;
 
 	default:
diff --git a/kenwood/xg3.c b/kenwood/xg3.c
index a790e62a0..6c6eb4d5f 100644
--- a/kenwood/xg3.c
+++ b/kenwood/xg3.c
@@ -247,7 +247,7 @@ int xg3_set_level(RIG * rig, vfo_t vfo, setting_t level, value_t val)
             return -RIG_EINVAL;
     }
 
-    return kenwood_simple_cmd(rig, levelbuf);
+    return kenwood_transaction(rig, levelbuf, NULL, 0);
 }
 
 /*
@@ -386,7 +386,7 @@ int xg3_set_freq(RIG * rig, vfo_t vfo, freq_t freq)
     {
         sprintf(cmdbuf, "F,%011ld", (long)freq);
     }
-    int err = kenwood_simple_cmd(rig, cmdbuf);
+    int err = kenwood_transaction(rig, cmdbuf, NULL, 0);
 
     return err;
 }
@@ -465,7 +465,7 @@ int xg3_set_powerstat(RIG * rig, powerstat_t status)
     if (status == RIG_POWER_OFF)
     {
         priv->powerstat = RIG_POWER_OFF;
-        return kenwood_simple_cmd(rig, cmd);
+        return kenwood_transaction(rig, cmd, NULL, 0);
     }
 
     rig_debug(RIG_DEBUG_VERBOSE, "%s invalid powerstat request status=%d\n",
@@ -481,7 +481,7 @@ int xg3_get_powerstat(RIG * rig, powerstat_t * status)
     rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
 
     const char *cmd = "G";      // any command to test will do
-    int retval = kenwood_simple_cmd(rig, cmd);
+    int retval = kenwood_transaction(rig, cmd, NULL, 0);
     if (retval != RIG_OK)
         return retval;
 
@@ -519,7 +519,7 @@ int xg3_set_mem(RIG * rig, vfo_t vfo, int ch)
         return -RIG_EINVAL;
     }
     sprintf(cmdbuf, "C,%02d;", ch);
-    retval = kenwood_simple_cmd(rig, cmdbuf);
+    retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
     if (retval != RIG_OK)
     {
         rig_debug(RIG_DEBUG_VERBOSE, "%s invalid set_mem cmd=%d\n", __func__,
@@ -542,7 +542,7 @@ int xg3_get_mem(RIG * rig, vfo_t vfo, int *ch)
 
     struct rig_state *rs = &rig->state;
     sprintf(cmdbuf, "C;");
-    retval = kenwood_simple_cmd(rig, cmdbuf);
+    retval = kenwood_transaction(rig, cmdbuf, NULL, 0);
     if (retval != RIG_OK)
         return retval;