diff --git a/icom/ic746.c b/icom/ic746.c
index d1f8599d0..0cabaf419 100644
--- a/icom/ic746.c
+++ b/icom/ic746.c
@@ -2,7 +2,7 @@
  *  Hamlib CI-V backend - description of IC-746 and variations
  *  Copyright (c) 2000-2003 by Stephane Fillod
  *
- *	$Id: ic746.c,v 1.9 2006-11-07 12:21:39 n0nb Exp $
+ *	$Id: ic746.c,v 1.10 2007-02-28 08:50:19 mardigras Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -313,7 +313,7 @@ const struct rig_caps ic746_caps = {
 };
 
 
- /*IC-746Pro Rig parameters Only available in this namespace*/
+ /* IC-746Pro Rig parameters Only available in this namespace.  This is a partial list */
 #define S_MEM_SC_LEN		2	/* 756PRO S_MEM subcmd length */
 #define S_MEM_LCD_CONT		0x501	/* LCD Contrast 0-256/0-100% */
 #define S_MEM_BKLIT		0x502	/* Backlight  0-256/0-100% */
@@ -348,7 +348,7 @@ static const struct confparams ic746pro_ext_parms[] = {
 		NULL, RIG_CONF_COMBO, { .c = {{ "Auto", "Sql", "RF+Sql", NULL }} }
 	},
 	{ TOK_RTTY_FLTR, "rttyfltr", "RTTY Fltr Width preset", "Set/Read RTTY preset filter width",
-		"3", RIG_CONF_COMBO, { .c = {{"250", "300", "350", "500", "1000", NULL }} }
+		"350", RIG_CONF_COMBO, { .c = {{"250", "300", "350", "500", "1000", NULL }} }
 	},
 	{ RIG_CONF_END, NULL, }
 };
@@ -356,7 +356,7 @@ static const struct confparams ic746pro_ext_parms[] = {
 
 /*
  * NUMERIC: val.f
- * COMBO: val.i, starting from 0
+ * COMBO: val.i, starting from 0 Index to a string table.
  * STRING: val.cs for set, val.s for get
  * CHECKBUTTON: val.i 0/1
  */
@@ -574,9 +574,9 @@ static int ic746pro_set_ext_parm(RIG *rig, token_t token, value_t val)
 		icom_val = val.i;
 		break;
 	case TOK_RTTY_FLTR:	/* RTTY filter mode 0 - 4 = 250, 300, 350, 500, 1000 */
-		if (val.f < 0 || val.f > 4) return -RIG_EINVAL;
+		if (val.i < 0 || val.i > 4) return -RIG_EINVAL;
 		ep_sc = S_MEM_RTTY_FL_PB;
-		icom_val = val.f;
+		icom_val = val.i;
 		break;
 	default:
 		return -RIG_EINVAL;
@@ -664,6 +664,7 @@ static int ic746pro_get_ext_parm(RIG *rig, token_t token, value_t *val)
 		case RIG_CONF_STRING:
 		 memcpy(val->s, resbuf, res_len);
 		break;
+		case RIG_CONF_CHECKBUTTON:
 		case RIG_CONF_COMBO:
 		 val->i = from_bcd_be(resbuf+cmdhead, res_len*2);
 		break;
@@ -675,9 +676,6 @@ static int ic746pro_get_ext_parm(RIG *rig, token_t token, value_t *val)
 			"len=%d\n", __FUNCTION__,resbuf[0],res_len);
 		return -RIG_EPROTO;
 		
-	/* The examples of code usage for RIG_CONF_NUMERIC types seems to be restricted to raw floating 
-	 point values.  Although the Val definitions allow both integer and  floating point types  The combo
-	 types appear to be left in undecoded form*/
 	}
 	rig_debug(RIG_DEBUG_TRACE,"%s: %d %d %d %f\n",
 			__FUNCTION__, res_len, icom_val, val->i, val->f);
diff --git a/icom/ic756.c b/icom/ic756.c
index b5245fc77..3e159f83d 100644
--- a/icom/ic756.c
+++ b/icom/ic756.c
@@ -2,7 +2,7 @@
  *  Hamlib CI-V backend - description of IC-756 and variations
  *  Copyright (c) 2000-2004 by Stephane Fillod
  *
- *	$Id: ic756.c,v 1.15 2006-10-07 20:13:21 csete Exp $
+ *	$Id: ic756.c,v 1.16 2007-02-28 08:50:20 mardigras Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -397,7 +397,7 @@ static const struct confparams ic756pro2_ext_parms[] = {
 		NULL, RIG_CONF_STRING, { }
 	},
 	{ TOK_RTTY_FLTR, "rttyfltr", "RTTY Fltr Width preset", "Set/Read RTTY preset filter width",
-		"3", RIG_CONF_COMBO, { .c = {{"250", "300", "350", "500", "1000", NULL }} }
+		"350", RIG_CONF_COMBO, { .c = {{"250", "300", "350", "500", "1000", NULL }} }
 	},
 	{ RIG_CONF_END, NULL, }
 };
@@ -618,7 +618,7 @@ static int ic756pro2_set_ext_parm(RIG *rig, token_t token, value_t val)
 	case TOK_RTTY_FLTR:	/* RTTY filter mode 0 - 4 = 250, 300, 350, 500, 1000 */
 		if (val.i < 0 || val.i > 4) return -RIG_EINVAL;
 		ep_sc = S_MEM_RTTY_FL_PB;
-		icom_val = val.f;
+		icom_val = val.i;
 		break;
 	default:
 		return -RIG_EINVAL;
@@ -712,6 +712,7 @@ static int ic756pro2_get_ext_parm(RIG *rig, token_t token, value_t *val)
 		case RIG_CONF_STRING:
 		 memcpy(val->s, resbuf, res_len);
 		break;
+		case RIG_CONF_CHECKBUTTON:
 		case RIG_CONF_COMBO:
 		 val->i = from_bcd_be(resbuf+cmdhead, res_len*2);
 		break;
@@ -723,9 +724,6 @@ static int ic756pro2_get_ext_parm(RIG *rig, token_t token, value_t *val)
 			"len=%d\n", __FUNCTION__,resbuf[0],res_len);
 		return -RIG_EPROTO;
 		
-	/* The examples of code usage for RIG_CONF_NUMERIC types seems to be restricted to raw floating
-	 point values.  Although the Val definitions allow both integer and  floating point types  The combo
-	 types appear to be left in undecoded form*/
 	}
 	rig_debug(RIG_DEBUG_TRACE,"%s: %d %d %d %f\n",
 			__FUNCTION__, res_len, icom_val, val->i, val->f);
diff --git a/icom/icom.c b/icom/icom.c
index 21016a4f4..11af8558b 100644
--- a/icom/icom.c
+++ b/icom/icom.c
@@ -2,7 +2,7 @@
  *  Hamlib CI-V backend - main file
  *  Copyright (c) 2000-2005 by Stephane Fillod
  *
- *	$Id: icom.c,v 1.100 2007-01-27 23:50:13 n0nb Exp $
+ *	$Id: icom.c,v 1.101 2007-02-28 08:50:20 mardigras Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -578,7 +578,7 @@ int icom_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
 
 	/* Most rigs return 1-wide, 2-normal,3-narrow  For DSP rigs these are presets, can be programmed for 30 - 41 bandwidths, depending on mode    Lets check for dsp filters */
 	
-	if ((retval = icom_get_dsp_flt(rig, *mode)))
+	if ((retval = icom_get_dsp_flt(rig, *mode)) !=0)
              *width = retval;
 
 	return RIG_OK;
diff --git a/icom/icom.h b/icom/icom.h
index 1854eb24c..cef42f809 100644
--- a/icom/icom.h
+++ b/icom/icom.h
@@ -2,7 +2,7 @@
  *  Hamlib CI-V backend - main header
  *  Copyright (c) 2000-2004 by Stephane Fillod
  *
- *	$Id: icom.h,v 1.74 2006-11-07 12:21:39 n0nb Exp $
+ *	$Id: icom.h,v 1.75 2007-02-28 08:50:20 mardigras Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -122,7 +122,7 @@ extern const struct ts_sc_list ic7000_ts_sc_list[];
 extern const struct ts_sc_list ic910_ts_sc_list[];
 extern const struct ts_sc_list ic718_ts_sc_list[];
 
-extern const pbwidth_t rtty_fil[];	/* rtty filter passband width; available on pro rigs */
+extern const pbwidth_t rtty_fil[];	/* rtty filter passband width; available on 746pro and 756pro rigs */
 
 pbwidth_t icom_get_dsp_flt(RIG *rig, rmode_t mode);
 
diff --git a/include/hamlib/rig.h b/include/hamlib/rig.h
index 0659b2547..cfe786be0 100644
--- a/include/hamlib/rig.h
+++ b/include/hamlib/rig.h
@@ -2,7 +2,7 @@
  *  Hamlib Interface - API header
  *  Copyright (c) 2000-2005 by Stephane Fillod and Frank Singleton
  *
- *	$Id: rig.h,v 1.120 2006-11-07 12:21:39 n0nb Exp $
+ *	$Id: rig.h,v 1.121 2007-02-28 08:52:49 mardigras Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -439,8 +439,8 @@ typedef enum {
 	RIG_OP_FROM_VFO =	(1<<2),	/*!< VFO->MEM */
 	RIG_OP_TO_VFO =		(1<<3),	/*!< MEM->VFO */
 	RIG_OP_MCL =		(1<<4),	/*!< Memory clear */
-	RIG_OP_UP =		(1<<5),	/*!< UP */
-	RIG_OP_DOWN =		(1<<6),	/*!< DOWN */
+	RIG_OP_UP =		(1<<5),	/*!< UP increment VFO freq by tuning step*/
+	RIG_OP_DOWN =		(1<<6),	/*!< DOWN decrement VFO freq by tuning step*/
 	RIG_OP_BAND_UP =	(1<<7),	/*!< Band UP */
 	RIG_OP_BAND_DOWN =	(1<<8),	/*!< Band DOWN */
 	RIG_OP_LEFT =		(1<<9),	/*!< LEFT */
@@ -473,13 +473,23 @@ typedef long token_t;
 #define RIG_CONF_END 0
 
 /**
- * \brief Configuration parameter types
+ * \brief  parameter types
+ *
+ *   Used with configuration, parameter and extra-parm tables.
+ * 
+ *   Current internal implementation
+ *   NUMERIC: val.f or val.i
+ *   COMBO: val.i, starting from 0.  Points to a table of strings or asci stored values.
+ *   STRING: val.s or val.cs
+ *   CHECKBUTTON: val.i 0/1
  */
+
 /* strongly inspired from soundmedem. Thanks Thomas! */
+
 enum rig_conf_e {
 	RIG_CONF_STRING,	/*!<	String type */
 	RIG_CONF_COMBO,		/*!<	Combo type */
-	RIG_CONF_NUMERIC,	/*!<	Numeric type (integer or real) */
+	RIG_CONF_NUMERIC,	/*!<	Numeric type integer or real */
 	RIG_CONF_CHECKBUTTON	/*!<	on/off type */
 };