RECEIVER TEST DATA copia da pagina Sherwood Engineering

 RECEIVER TEST DATA

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Receiver Test Data (Terms Explained: DOC PDF) Sorted by Third-Order Dynamic Range Narrow Spaced - or- ARRL RMDR (Reciprocal Mixing Dynamic Range) if Phase Noise Limited Note: The term blocking only applies to a superhet radio. For a direct sampling radio the value in the blocking column is the ADC overload point reference receiver noise floor. Updated 18 October 2020. Added Lab599 TX-500.

Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise (dBc/Hz)	Spacing kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
LO Noise Corrected 05/10/19 Yaesu FTdx-101D	-127 -136b -1416	4.5 1.6b 0.58b1	3	>147	0.60 0.20b 0.12b1	154 155	10 50	A Trk Presel	>115	110	20	110	2
Added 9/29/14 FlexRadio Systems 6700 Hardware Updated	-118 -135b2	3.0 1.0b2	Var	130 preamp Off	2.0 0.25b2	145 155	10 50	B Band Pass	115	99	20&2	108y	20&2
Added 02/11/18 Icom IC-R8600 Second sample S/N 02001177	-131 -142b -130ab	2.40 0.67b	3	125	0.40 0.12b 0.49ab	144 148	10 50	B Half Octave	>100	109ab 88ac	20	107ab 88ac	2
Added 11/10/15 Elecraft K3S	-135 -138b -14510	1.5 0.45b	3	150	0.27 0.20b 0.0810	144 146	10 50	B Band Pass	110	107q	20	106p 106q	2
Added 3/17/17 Elecraft K3S 2nd Sample 10 meter data	-135 -138b -14510	1.5 0.45b	3	150	0.27 0.20b 0.0810	144 146	10 50	B Band Pass	110	106ah	20	105ah	2
Added 02/23/15 Elecraft K3 (RX Gain Recal) New Synthesizer	-136 -139bq	1.0 0.3b	3	141	0.27 0.20b	145 147	10 50	B Band Pass	108	105q	20	107p 104q	2
Added 04/25/16 Icom IC-7851	-123 -135b -141b1	8.5 1.85b 1.16b1	3	149	0.65 0.16b 0.11b1	148 153	10 50	A Trk Presel	100	110aa	20	105aa	2
Added 10/15/18 Kenwood TS-890S	-131 -140b -1416	2.1 0.53b 0.14b1	3	>151	0.39 0.13b 0.10b1	155 156	10 50	B Half Octave	>118	106	20	105	2
Added 10/02/12 Hilberling PT-8000A Hardware Rev 2.00	-128 -141b	5.4 1.0b	3	142	0.45 0.11b	144 149	10 50	A Trk Presel	100	105	20	105w	2
Added 08/10/12 Elecraft KX3	-123 -138b2	12 1.3b2	3	138	0.9 0.09b2	144	10	B Band Pass	110	105	20	104t 96u 65v	2
Added 02/22/18 Apache ANAN-7000DLE	-131 -131ad -1406	1.0 adjustable 2.2ae	3	126	0.43 0.43ad 0.166	140 143	10 50	B Band Pass	>110	103	20	103ad	2
Added 12/01/10 Yaesu FTdx-5000D	-123 -135b -141b1	4.6 1.2b 0.33b1	3	127s	1.1 0.27b 0.13b1	135	10	B Band Pass	90f	104	20	101f	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Added 2/15/08 Elecraft K3	-130 -138b	2.1 0.6b	3	140s	0.33 0.19b	138	10	B Band Pass	105	104	20	101p f 96q a 95r	2
Added 03/27/19 FlexRadio 6400	-112 -127b3 -136b4	9 1.4b3 0.44b4	3	119	4.0 0.63b3 0.22b4	145 146	10 20	B Band Pass	115	100b3	20&2	100b3	20&2
Added 05/14/18 FlexRadio 6600M PLL update & 2 Hardware Upgrades	-111 -126b3 -136b4	13 2.0b3 0.35b4	3	116	4.5 0.78b3 0.26b4	144 148	10 20	A- Band Pass	115	102b0	20&2	99b3 99aj	20&2
Added 08/31/16 Apache ANAN-200D Tested 12/15/2015	-133 -132ad	1.0 adjustable 3.0ae	3	123	0.30 0.37ad	131 137	10 50	B Band Pass	95	99	20	99af 77ad 64ac	2
Updated 7/2/09 Perseus	-123 -125b	0.15 0.1b	3	125	0.8 0.6b	147	10	B Band Pass	109f	99	20	99	2
Added 12/23/17 Icom IC-7610 S/N 12001056	-132 -140b -142b1 -129ab	2.7 1.20b 1.16b1	3	122 119ab	0.36 0.15b 0.125b1 0.51ab	146 >149	10 50	A Trk Presel	110	98ab 90ac	20	98ab 90ac	2
Added 12/23/17 Icom IC-R8600 S/N 04001188	-132 -142b -130.5ab	2.40 0.67b	3	125	0.40 0.12b 0.49ab	144 148	10 50	B Half Octave	105	98ab 78ac	20	98ab 78ac	2
Added 02/11/18 Icom IC-7300 Second Sample S/N 02012272	-133 -140.5b -141.5b1 -132ab	1.9 0.85b 0.50b1	3	123	0.30 0.12b 0.11b1 0.35ab	137 147	10 50	B Band Pass	>100	106ab 84ac	20	97ab 84ac	2
Added 3/17/17 FlexRadio Systems 6700 2nd Sample 10 meters	-116 -134b2	3.0 1.0b2	Var	130 preamp Off	2.0 0.25b2	145 155	10 50	B Band Pass	115	99	20&2	96ag	20&2
Added 05/21/18 Icom IC-7610 S/N 12001276 Second Sample	-132 -139b -141b1 -128ab	2.8 1.20b 1.12b1	3	122 119ab	0.37 0.15b 0.13b1 0.53ab	145 >148	10 50	A Trk Presel	110	96ab 76ac	20	96ab 76ac	2
Added 2/15/08 FlexRadio Systems FLEX-5000A	-123 -135b	2.0 0.5b	3	123s	1.3 0.3b	123	10	B Band Pass	98	96	20	96	2
Added 4/16/06 Ten-Tec Orion II	-125 -133b	2.7 0.65b	3	130	0.75 0.3b	126	10	B Band Pass	100f	95f	20	95i	2
Added 04/25/16 Icom IC-7300 S/N 02001408	-133 -141b -142b1 -122ab	1.9 0.85b 0.50b1	3	123	0.27 0.11b 0.10b1 1.0ab	137 147	10 50	B Band Pass	>100	103ab 81ac	20	94ab 81ac	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Updated 4/17/06 Ten-Tec Orion	-127 -135b	0.8	3	137	0.6 0.25b	130	10	B Band Pass	100f	96	20	93	2
Added 12/09/14 Kenwood TS-590SG Down Conversion Mode	-127 -135b	2.2 0.65b	3	137	0.42 0.17b	139 141	10 50	B Bandpass	100f	104	20	92f	2
Added 06/22/13 Ten-Tec Argonaut VI	-125 -135b	3.2 0.75b	3	127	0.52 0.25b	127 134	10 50	B Band Pass	95f	95	20	92f	2
Added 08/15/19 Aerial-51 ALT-512	-120 -136b	9 0.75b	3	122	1.1 0.2b	133 131	10 50	B Band Pass	100	91	20	91	2
Added 11/10/10 Ten-Tec Eagle	-124 -132b	2.5 0.6b	3	129	0.7 0.3b	131 143	10 50	B Band Pass	92f	93	20	90f	2
Added 8/20/09 FlexRadio Systems FLEX-3000	-123 -139b	2.1 0.13b	3	116s	1.35 0.16b	120	10	B Band Pass	90f	90f	20	90f	2
Updated 3/21/17 FlexRadio Systems 6300 Second Sample Preamp Updated	-117 -136b2	3.0 1.0b2	Var	125 preamp Off	2.1 0.23b2	143 148	10 50	D High & Low Pass	110	89	20&2	89ai	20&2
Added 12/30/10 Kenwood TS-590S on 20 meters Down-conversion Mode For Up-Converson see Narrow Spaced at 76 dB	-128 -137b	1.8 0.5b	3	144s	0.43 0.15b	140	10	B Band Pass	92f	104	20	88f	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Added 02/26/11 FlexRadio Systems FLEX-1500	-112to-116 -120to-129b -121to-136b1	3.1 1.0b 0.4b1	3	108	2.8 1.4b 0.3b1	131	10	B Band Pass	95	88	20	88	2
Added 06/02/13 Kenwood TS-990S on 20 meters 15 & 12 meters RMDR varies by band 17 meters is worst band 30 meters is best band	-127 -138b -1386	1.9 0.46b	3	145	0.75 0.17b 0.136	138 150	10 50	A Trk Preselec	90f	111	20	87x	2
1/12/17 FlexRadio Systems 6300 Preamp Updated	-117 -136b2	3.0 1.0b2	Var	125 preamp Off	2.2 0.24b2	143 148	10 50	D High & Low Pass	110	86	20&2	86ak	20&2
Added 07/26/17 Elecraft KX2	-123 -136b	31 3.4b	3	N.A.	1.2 0.25b	132 129	10 50	B Bandpass	90	93	20	86	3
Added 2/15/08 Icom R9500	-127 -130b -135b1	1.1 0.25b 0.16b1	3	119	0.7 0.2b 0.11b1	134	10	B Band Pass	80	110f	20	85f	2
Drake R-4C/CF-600/6	-138	0.7	3	130	0.15	135	2.5	A- Preselector	130	85	20	84	2
Added 12/13/2012 Yaesu FTdx-3000	-127 -138b -142b1	3.8 1.0 0.36	3	132	0.57 0.15 0.11	127	10	B 0.5 Octave	80	105f	20	82f	2
AOR AR-7030	-122 -128b	2.2	3	130	0.5 0.22	130	10	D Hi/Lo Pass	90	100	20	82	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Added 4/16/06 Icom IC-765	-134 -140b	5.0 1.7b	3	143	0.26	130	10	B Band Pass	95f	102	20	81f j m	2
Added 10/03/14 Icom IC-703+	-126a -135a b	2.1 0.8b	3	128	0.33 0.125b	115 132	10 50	B Band Pass	85f	96	20	81a	5
Atlas 350-XL	-131	1.0	11	117	0.2	125	4	C Band Pass	95	81	20	81	2
Kenwood TS-830/YK88	-129	1.5	3	122	0.1	114	2	C Preselector	85f	84	20	81	2
Added 4/23/07 Ten-Tec Omni VII	-130 -140b	0.8 0.2b	3	130	0.45 0.17b	124	10	B 0.5 Octave	100f	92	20	80	2
Added 10/3/04 Icom IC-7800	-126 -136b -139b1	4.5 1.2b 0.6b1	3	>135	0.60 0.15b 0.10b1	130	10	A Trk Presel	100f	102	20	80f	2
Added 10/3/04 Elecraft K2 s/n:3170	-129 -136g	10 1.7b	15	123 134h	0.35 0.20	123	10	B Band Pass	80f	98	20	80f	2
Added 2/27/04 Ten-Tec Omni VI+	-135	0.7	3	145	0.2	137	20	B Band Pass	80	97	20	80	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Yaesu 901-DM	-135	1.6	3	124	0.15	109	2	C Preselector	85	87	20	80f	3
Added 10/18/20 Lab599 TX-500	-122 -138b	16 1.8b	3	112	2.0 0.25b	135 134	10 50	B 0.5 Octave	100	79	20	79	2
Added 8/10/12 Yaesu FT-950	-120 -132b -138b1	4.5 1.2b 0.5b1	3	125	1.1 0.31b 0.15b1	125	10	B	80f	105	20	79f	2
Collins R-390A	-137	N.A.		130	0.2	130	2	A+ Trk Presel	85	81	20	79	2
Ten-Tec Corsair	-131a	0.1	14	130	0.2	132	5	C Band Pass	90	93	20	79	3
Added 12/13/2012 Icom IC-7700	-127 -140b -143b1	6.5 1.6 0.8	3	140	0.69 0.15 0.10	129	10	A Trk Presel	90	105	20	78f	2
Added 9/3/09 Icom IC-7600	-130 -138b -141b1	5.3 2.35b 1.13b1	3	126	0.43 0.16b 0.11b1	121	10	B	78f	100	20	78f	2
Added 8/25/11 Icom IC-7410	-135 -142b -144b1	2.9 1.35b 0.5b1	3	135	0.3 0.12b 0.1b1	121	10	B	75f	102	20	78f	2
Icom IC-720A	-137	1.6	3	138	0.15	117	10	C 0.5 Octave	80	93	50	78	3
Kenwood TS-820S	-137	0.4	3	115	0.2	125	10	C Preselector	80	79	20	78	3
Updated 4/17/06 Kenwood TS-850 Inrad-400s	-128 -138b	2.2 0.5b	3	128	0.45 0.15b					90	20	77	2
JRC NRD-515	-138	3.5	4	103	0.1	118	10	C 0.8 Octave	80	95	20	77f	2
Added 12/30/10 Kenwood Up-conversion TS-590S on 17 meters	-132 -139b	1.4 0.42b	3	133s	0.28 0.13b	N.A.	10	B Band Pass	N.A.f	102	20	76f	2
Ten-Tec Omni V	-134	1.2	6	135	0.18	134	10	C Band Pass	100	89	20	76	2
Atlas 210/215X	-120a	N.A.		123	0.5	N.A.		C Band Pass	95	76	20	76	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Corrected 4/7/06 Icom 756 Pro III	-132 -140b -142b1	2.3 0.7 0.3	3	142	0.35 0.14 0.11	126	10	B 0.5 Octave	80	99	20	75	2
Added 4/7/06 Icom 756 Pro II	-133 -138b -141b1	2.1 0.65 0.26	3	138	0.32 0.15 0.11	124	10	B 0.5 Octave	80	98	20	75	2
Drake R-7	-135 -140b	1.0 0.4b	3	145	0.28 0.15b	114	10	B 0.5 Octave	85	97	100	75	2
Drake TR-7	-134	1.3	3	146	0.5	116	10	B 0.5 Octave	90	99	100	75	2
Heath SB-104	-123	N.A.		92	0.5	N.A.		C Band Pass	75	79	20	75	4
WJ HF-1000	-129 -136b	0.11	3	123	0.23 0.13b	115	10	D Wideband	80	99	20	75	5
Added 4/7/06 Icom 706MkIIG	-135 -140b	1.9 0.6	3	126	0.23 0.12	127	10	C Octave	80	87	20	74	2
Ten-Tec Omni-B	-136	0.2	25	129	0.15	130	10	C Preselector	80	87	20	74	2
Icom IC-730	-140	1.5	3	135	0.1	118	10	C 0.5 Octave	80	92	50	74	3
Kenwood R-820S	-125	4.0	3	125	0.35	123	10	C Preselector	75	74	20	74	4
Added 04/11/19 Icom IC-9700	-131 -1452	0.7 0.18b	3	111	0.35 0.082b	130 138	10 50	B Bandpass	100	74	20	74	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Collins 75-S3B	-146	1.1	15	122	0.1	120	4	B+ Preselector	85	88	20	74	2
Icom IC-781	-127 -138b	2.0 0.5b	3		0.5 0.18b	129	10	B 0.5 Octave	90f	94	20	73	2
Updated 4/18/06 Stock 781	-128 -135b	2.4 0.7b	3	131	0.5 0.22b			B 0.5 Octave	90	98	20	78	2
Updated 4/18/06 781 with Pin Diodes	-126 -134b	3.6 1.15b	3	134	0.54 0.21b			B 0.5 Octave	90	98	20	72	2
Kenwood TS-930S	-135	2.0	3	143	0.15	115	10	B- 0.5 Octave	80f	86	20	73	3
Icom IC-701	-129	5.5	6	130	0.3	125	10	C Band Pass	75	81	50	73	4
Collins 75S-3C	-141	1.3	12	121	0.14	120	4	B+ Preselector	95	85d	20	72	2
Kenwood TS-480HX Without CW Xtal Filter	-135 -143b	3.0 0.6b	3	142	0.28 0.11b	121	10	B 0.5 Octave	80f	99	20	72	3
JRC NRD-525	-132a	0.9	3	123	0.2	120	10	B Trk Presel	65	95	50	72	5
Added 08/05/15 Yaesu FT-991	-123 -135b -143b1	5 1.2b 0.33b1	3	133	0.70 0.17b 0.08b1	120 137	10 50	B Bandpass	80f	96	20	72	2
Updated 4/13/09 Yaesu FT-1000 MP MKV Field Inrad roofing filter mod	-133b	3.0b	3	135	0.2b	128	10	B 0.5 Octave	90f	89	20	71k	2
Added 10/3/04 Icom 756 Pro	-127 -136b -139b1	3.5 1.0b 0.5b1	3	132	0.55 0.21b 0.14b1	127	10	B 0.5 Octave	90	86	20	71	2
Drake R-8	-128 -131ab	0.6 0.3	3	130	0.25 0.18b	115	10	C 0.5 Octave	75f	90 85b	20	71	5
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Icom IC-R72	-127 -135a	3.1 1.2b	3	129	0.28 0.11b	122	10	C 0.5 Octave	75	87b	20	71	5
Icom R-9000	-131a	0.8	3	129	0.15	128	10	B 0.5 Octave	90	93	20	71	5
Added 04/25/16 Icom IC-9100	-133 -141b -1412	2.4 1.0b 0.39b1	3	N.A.	0.36 0.15b 0.1302	119 136	10 50	B Band Pass	N.A.	101f	20	71f 6070	2
Added 2/27/04 Elecraft K2 s/n: 1140	-135	2.6	15	118	0.22	123	10	B Band Pass	80f	95	20	70	2
JRC NRD-535	-135a	0.9	3	114	0.1	117	10	B Trk Presel	70	92	50	70	5
Kenwood TS-830S	-136a	0.9	3	122	0.1	113	2	C Preselector	80	84	20	70	3
Icom IC-761	-131 -139b	2.0 0.7b	3	145	0.4 0.17b	129	10	B- 0.5 Octave	90f	87	20	70	2
Added 7/8/15 Yaesu FTdx-1200	-122 -134b -140b1	5.5 1.4 0.4	3	137	1.0 0.26 0.14	123	10	B 0.5 Octave	83	102f	20	70z	2
Added 07/26/17 Yaesu FT-891	-129 -140b -1386	6.1 1.55b	3	N.A.	0.44 0.11b 0.156	116 N.A.	10 50	B 0.5 Octave	80f	92	20	70f	2
Added 08/05/15 Kenwood TS-570S	-131 -139b	1.6 0.43b	3	143	0.40 0.16b	118 137	10 50	B Bandpass	75	99	20	69f	2
Added 4/16/06 Kenwood TS-870S	-127 -137b	1.9 0.44b	3	137	0.5	121	10	C 0.5 Octave	90f	95	20	69	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Added 10/3/04 Yaesu FT-1000 MP MKV Field	-133b	3.0b	3	135	0.2b	128	10	B 0.5 Octave	90f	88	20	69	2
Added 10/3/04 Yaesu FT-1000 D	-128b1	6.0b1	3	>131	0.3b1	121	10	B 0.5 Octave	90f	90	20	69	2
Lowe HF-150	-126a	0.7	3	126	0.3	113	10	F No Bandpass	75	84	20	69	5
Kenwood TS-430S	-136a	0.6	3	134	0.1	102	10	C 0.5 Octave	70	78	20	69	5
Added 10/3/04 Yaesu FT-1000 MP	-125 -134b	3.8 1.1b	3	>135	0.48 0.18b	128	10	B 0.5 Octave	90f	97	20	68	2
JRC NRD-545	-130a	2.0	6	127	0.2	118	10	B 0.5 Octave	65	96	100	68	5
Signal/One CX-11A	-122a	0.6	17	109	0.6	119	50	C 0.5 Octave	105	90	50	68	5f
Kenwood TS-180S	-139	0.9	3	115	0.15	120	10	C Preselector	80	70	20	68	3
Drake TR-4C	-124a	1.2	3	105	0.4	130	10	C Preselector	80	74	20	68	2
Icom IC-735	-126 -133b	1.5	12	135	0.35 0.18b	123	10	C 0.5 Octave	90f	83	20	68	2
Added 1/21/04 Icom IC-R75	-123a -130b	3.5 1.3b	3	119	0.5 0.2b	109	10	B 0.5 Octave	80	95	50	67	5
Drake SW8	-127a	0.9	3	125	0.32	113	10	N.A.	70	92	20	67	5
Racal 6790 GM	-128	0.3	1	145	0.7	130	10	D Broadband	85	95	20	66	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Yaesu FT-736R 2 meters	-141	1.3	3	125	0.11	128 143	10 50	C Bandpass	80	88	20	66	2
Lowe HF-235	-126a	0.8	3	129	0.35	117	10	D Octave	80	71	20	66	5
AOR AR3030	-131a	2.0	10	130	0.16	117	10	C 0.5 Octave	85	90	20	66	5
Added 11/01/19 Kenwood TS-2000X 2 meter data	-123 -140b	2.8 0.45b	3	124	1.0 0.15b	113 131	10 50	B Band Pass	75f	87	20	65f	2
Yaesu FRG-100	-133a	0.9	3	127	0.13	112	10	C 0.5 Octave	70	99	50	65	5
Kenwood R-5000	-131a	0.4	3	134	0.2	120	10	C 0.5 Octave	80f	86	20	65	5
Added 2/27/04 Palstar R-30	-123	2.6	3	130	0.35	116	10	C Octave	90	88	20	64	5
Yaesu FRG-7700	-130a	1.3	3	123	0.2	100	10	D Octave	65	83	50	64f	5c
Kenwood R-1000	-130a	0.9	3	119	0.2	107	10	D Octave	70	76	20	64f	3c
Heath SB-303	-134	N.A.		104	0.5	N.A.		C Preselector	70	66	20	64	4
Collins KWM-380	-127a	1.1	5	123	0.3	99	10	B 0.5 Octave	70f	94	50	64f	2
Icom IC-751	-127 -133b	6.3	3	138	0.4 0.2b	127	10	B- 0.5 Octave	90f	84	20	64	2
Added 3/27/06 Icom 7000	-129 -139b	4.5 1.0	3	119	0.45 0.13	122	10	C Octave	65	90	20	63	2
Added 9/22/07 Yaesu FT-2000	-122 -132b -140b1	5 1.3b 0.5b1	3	120	1.0 0.3b 0.14b1	122	10	B+ Bandpass + Trk	80f	81n 90o	20	63n 61o	2
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz
Icom IC-275H 2 meters	-136a	0.25	3	122	0.11	124 141	10 50	B Bandpass	75	85	20	63	2
Kenwood TS-520	-139	N.A.		116	0.15	N.A.		C Preselector	70	63	20	63	3
Yaesu FT-One	-135	1.0	3	130	0.2	99	10	C 0.5 Octave	80f	91	50	63f	2
Collins 75-S3 Wing	-145	1.0	14	105	0.1	N.A.		B Preselector	75	75	20	63	3
JRC NRD-93	-141	1.6	3	128	0.15	133	10	A+ Trk Presel	80	94	20	63	2
Yaesu FT-980	-136	1.8	3	140	0.12	106	10	C 0.5 Octave	62f	96	50	63	2
Icom IC-R70/R-71A	-129 -135b	3.1 1.4b	3	132	0.4 0.2b	128	10	B- 0.5 Octave	90f	86	20	62	3
Grundig Satellite 700	-127a	1.6	3	106	0.3	118	10	N.A.	85	76	20	62	5
KWZ-30	-130	1.0	3	120	0.8	118	10	d	80	100	20	60	5
Collins 51S1	-134	1.0	7	117	0.13	146	10	A Trk Presel	100	84e	100	60	5
Icom R-8500	-135a	0.45	3	132	0.11	131	10	B 0.5 Octave	75	81	20	59	5
Yaesu FT-101E	-141	N.A.		102	0.15	N.A.		C Preselector	70	60	20	59	3
Drake R-4C Stock	-139	0.7	3	130	0.15	144	5	A- Preselector	70	85	20	58	2
Yaesu FT-757	-120 -134b	1.6	3	130	0.7 0.15b	109	10	C 0.5 Octave	70f	86	20	56	3
Ten-Tec 340	-123 -133b	0.5 0.13	3	109	0.4 0.14	113	10	B 0.5 Octave	70	93	100	46	5
Kenwood R-2000	-130a	1.4	3	115	0.15	105	10	D Octave	70	71	20	45	5
Kenwood R-600	-130a	0.8	3	109	0.2	99	10	D Octave	65	68	20	F.L..	5
Yaesu FRG-8800	-132a	0.6	3	122	0.18	N.A.		D Octave	70	87	20	F.L.	5
AOR 5000	-124 -130ab	0.9 1.8	3	118	0.2 0.35	103	10	B 0.5 Octave	60	58	50	f	5
Device Under Test	Noise Floor (dBm)	AGC Thrshld (uV)	dB	100kHz Blocking (dB)	Sensitivity (uV)	LO Noise Spacing (dBc/Hz)	kHz	Front End Selectivity	Filter Ultimate (dB)	Dynamic Range Wide Spaced (dB)	kHz	Dynamic Range Narrow Spaced (dB)	kHz

Receiver Table Legend:
3 dB blocking (gain compression) test done at 100 kHz to eliminate phase noise interaction    F.L. = Filter limited, no measurement was possible due to signal leakage around filter    N.A. = Data not available
a	Measured with SSB filter
b0	No preamp actuated
b	Built-in Preamp actuated
b1	Built-in Preamp 2 actuated
b2	Built-in Preamp set at 20 dB. Adjustable to 10, 20 or 30 dB
b3	Built-in Preamp set at 16 dB
b4	Built-in Preamp set at 32 dB
c	Readings would have been lower if 2-kHz spacing had been possible
d	Dynamic Range is 90-dB at 100-kHz spacing
e	20-kHz Dynamic Range is 66-dB
f	Measurement was Phase-Noise Limited = ARRL RMDR (Reciprocal Mixing Dynamic Range)
g	Audio DSP Enabled
h	AGC Off
i	At 1 kHz dynamic also 95 dB but with 300 Hz roofing filter enabled
j	At 1 kHz, noise limited to 68 dB
k	At 1 kHz dynamic range was 66 dB
l	(lowercase L) Reserved
m	Receiver was optimized by Malcom Technical Support for best dynamic range
n	Measured with 3 kHz roofing filter
o	Measured with 6 kHz roofing filter
p	with 200 Hz 5-pole filter
q	with 400 Hz 8-pole filter
r	with 500 Hz 5-pole filter
s	Using ARRL 3-Hz bandwidth blocking method
t	with optional roofing filter
u	without optional roofing filter
v	At 1 kHz performance is opposite sideband rejection limited
w	At 1 kHz dynamic range is 104 dB
x	"Long Form" report available by e-mail request. 2-kHz RMDR: 6M=91dB, 10M=92dB, 12&15&20M=87dB, 17M=85dB, 30M=98dB, 40M=92dB, 80M=94dB & 160M=95dB
y	DR3=108 dB with 20 dB preamp ON, and 99 dB with preamp OFF. Otherwise dynamic range independent of signal spacing. NOTE: Tests in 2017 of a second 6700, and by the ARRL of a 6500, no longer measured a dynamic-range increase with the preamp ON. The 108 dB value is no longer valid. 2 kHz dynamic range is 99 dB, same as 6600M. As with any radio, only use a preamp if it improves copy, and usually only on 15m and up.
z	The low-side dynamic range was 76 dB, while the high-side dynamic range was 70. NOTE: This may imply the roofing filter was asymmetrical, and likely a sample variation.
aa	Measured using 1.2 kHz roofing filter.
ab	Measured with IP+ ON.
ac	Measured with dither and random OFF NOTE: Icom calls "dither and random" IP+. Noise floor may be affected by dither and random.
ad	Measured with Dither and Random ON NOTE: Dither and Random convert intermodulation products into broadband noise.
ae	AGC threshold adjustable NOTE: AGC threshold should be set about 6 dB above band noise.
af	Measured with third test tone. NOTE: ARRL may test dynamic range (DR3) of direct-sampling radios with a third test tone to approximate a crowded band. The validity of this test method is questionable.
ag	DR3=96 dB with 20 dB Preamp ON. (99 dB Preamp OFF) Otherwise dynamic range independent of signal spacing. NOTE: Testing of 2nd sample made on 10 meters while investigating IFSS* curves. Similar testing of 2nd sample of K3S, also made on 10 meters. * IFSS = Interference free signal strength.
ah	NOTE: Testing of 2nd sample made on 10 meters while investigating IFSS* curves. Similar testing of 2nd sample of Flex Radio 6700, also made on 10 meters. * IFSS = Interference free signal strength.
ai	NOTE: Dynamic range testing of a second 6300 sample resulted in a modestly higher dyanmic range measurement.
aj	NOTE: Test data for 6600M is after May 2018 PEN (Product Enhancement Notice). Due to the insertion loss of 7-pole bandpass filters on the contest bands, recommend +16 dB preamp during daytime on 80 -17 meters if in a quiet location. 15 - 6 meters may require +32dB preamp for an adequate noise floor.Tested with Alpha v. 2.2.7 software.
ak	Some variation in dynamic range was noted after an extended warm-up.
6	6 meter data, preamp ON
10	10 meter data, preamp 2 ON
2	2 meter data, preamp ON
70	70cm, preamp ON. RMDR limited

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1268 South Ogden Street Denver, Colorado 80210 USA
email     Phone: 303-722-2257     FAX: 303-744-8876
9 a.m. - 5 p.m. MST Monday - Friday

Updated 23 October 2018 tac

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Terms Explained for the Sherwood Table of Receiver Performance

 

Left to right starting with noise floor:

 

Noise floor measures how weak a signal one can hear.  Practically it is only of significance on the higher HF bands due to the higher level of band noise on the low bands.  This assumes you are listening on your transmit antenna.  If you are using a Beverage or a low gain loop, then it could be an issue on any band. 

 

The noise floor is measured with a 500 Hz CW filter bandwidth, assuming the radio has a CW filter.  There is a note on the measurement if the radio only had an SSB bandwidth. Older radios (Drake, Collins) had no switchable preamp.  Compare them to a modern radio with Preamp ON or Preamp #1 ON. A noise floor of -135 dBm is more than adequate on 15 meters in a quiet rural location.  A lower noise floor (-138 dBm) might be useful on 10 meters in a quiet location.  Serious 6 meter DXers often use an external low-noise preamp to get the noise floor down to -140 dBm or a few dBm lower.  If you are in the city, hardly any of this matters due to all the local noise. (On 15 – 6 meters, hardline would be important to reduce the feedline loss to make the best use of the noise floor.)  

 

Noise floor is quoted in dBm (power).  Consider it a similar measurement to Sensitivity on SSB, which I quote in microvolts (uV).  Noise floor is a 3 dB S+N/N ratio, usually measured at 500 Hz bandwidth.  Sensitivity is a 10 dB S+N/N ratio, usually measured with a 2.4 kHz bandwidth for SSB.  Due to the wider bandwidth on SSB, the signal vs. the noise sounds about the same by ear.   

 

AGC threshold:

 

The threshold is the signal level below which the receiver gain is running wide open.  Again this is mainly of significance on 20 meters and up, since the S meter often reads up scale on noise on the lower bands.  If the band noise reads up scale several S units on band noise, a signal is never going to be below the AGC threshold. Some newer radios let you set the AGC threshold, though it may not “memorized” by band, which would be helpful.  For modern radios with a switchable preamp, I prefer a threshold of 2.5 uV with the Preamp OFF and 1 uV with the Preamp ON. 

 

Blocking:

 

Blocking occurs when the radio is just beginning to overload from a signal outside the passband.  It is usually about 30 dB above the Dynamic Range of the radio (to be described below).  If a radio has a good dynamic range, then it will have a good blocking number.  130 dB is a good number.  With direct sampling radios, blocking is technically not the correct term.  An A to D converter has an absolute overload point, unlike a 1 or 3 dB gain compression point.  Note:  Instantaneous overload from many strong signals may cause the overload indicator flicker, but may not have an audible side effect.

 

 

 

Sensitivity:

 

This figure of merit has been around since at least the 1940s.  I quote it in uV, as mentioned above.  To measure it, a signal generator is fed into the radio, and the output at the speaker is read on an RMS volt meter.  The generator level is adjusted so the difference from when the signal is tuned in vs. when the signal is out of the passband equals 10 dB.  In other words, the signal is 10 dB stronger than the receiver noise.   Likewise, when one measures noise floor in CW mode, when the signal is tuned in it goes up 3 dB. 

 

Phase Noise:

 

Old radios (Collins, Drake, Hammarlund, National) used a VFO or PTO and crystal oscillators to tune the bands.  Any noise in the local oscillator (LO) chain was minimal.  When synthesized radios came along in the 70s, the LO had noise on it.  It is caused by phase jitter in the circuit, and puts significant noise sidebands on the LO.   This can mix with a strong signal outside the passband of the radio and put noise on top of the weak signal you are trying to copy.

 

This is a significant problem in some cases:  You have a neighboring ham close by, during Field Day when there are multiple transmitters at the same site, and certainly in a multi-multi contest station.  You would like the number to be better that 130 dBc / Hz at 10 kHz.  A non-synthesized radio, such as a Drake or Collins, has so little local oscillator noise the measurements were made closer-in between 2 and 5 kHz.

 

Note:  Very few legacy superhet radios have low phase noise, though most direct sampling radios have low phase noise. The ARRL has clearly emphasized low phase noise (RMDR) since 2013.  (RMDR = Reciprocal Mixing Dynamic Range) To convert my LO Noise (dBc/Hz) column data to RMDR subtract 27 dB for a 500-Hz bandwidth.

 

Front End Selectivity:

 

This is less of an issue to day as almost every radio has a half-octave filter in the front end.  The R-390A had the best mechanical front end (preselector) ever made, with the Drake and Collins somewhat behind.   The R-390A preselector tracked the tuning knob, while you had to peak the Drake and Collins by hand.  A small number of superhet radios today have a preselector that follows the main tuning dial.   

 

Note: Direct sampling radios are more prone to overload from very strong signals within a given band since they have no roofing filter as in down-conversion radios. Some direct sampling radios have a tracking preselector that helps to some extent in environments like Field Day or having another ham near your QTH.

 

 

 

 

 

Filter Ultimate:

 

In the old days filter leakage was an issue.  Either the filter didn’t have many poles, or there was leakage around the filter (filter blow-by).  70 dB was a typical number.  As radios improved, it became common to have dual conversion, with a crystal filter at 5 to 10 MHz, and then another filter at 455 kHz.  Even if each filter only provided 70 dB attenuation, by the time the out-of-passband signal was attenuatored twice, then filter leakage was a non-issue.  2X 70 dB = 140 dB. 

 

Then along came synthesized radios with phase noise.  Now the problem became the close-in phase noise limiting the rejection of the filter.  Instead of hearing signal leakage on the edge of the filter, one hears noise from the LO, called reciprocal mixing. 

 

I measure filter ultimate a few filter bandwidths away from the passband.  On CW that would be a couple kHz, and on SSB that would be 4 to 6 kHz.  Most of the legacy superhet  radios near the top of the list are phase noise limited.  Most of the older radios near the bottom of the list are leakage limited, if one makes a generalization.

 

Note:  New direct sampling radios generally have both excellent phase noise and filter rejection.  On SSB transmitted splatter from a station a few kHz away is typically the reception limit, not filter performance.

 

Dynamic Range:

 

Now we get to the nitty gritty.  I started testing radios in 1976 because the ARRL rated the Drake R-4C very good, but in a CW contest it was terrible.  The radio overloaded in a CW pile-up, so I decided to figure out what was wrong with their testing.  In 1975 the League had started testing for noise floor and dynamic range, new terms for most amateurs.  Spurious Free Dyanmic Range measures how the radio can handle strong undesired signals at the same time as a weak desired signal, without overload.  When a radio overloads, it starts generating spurious signals on its own. 

 

Dynamic range is defined as the level in dB when two strong test signals make distortion in the radio equal to the noise floor.  The radio thus can handle that range of signals before the strong signals just start to overload the radio. 

 

The League originally only tested the dynamic range at 20-kHz test spacing, which was reasonable at the time.  But as multi-conversion radios became the norm, this test was inadequate.  The Drake example was a case in point.  When the two test signals are 20 kHz apart, the overload distortion products are 20 kHz each side of the pair of test signals. In other words, they League was testing as if the QRM was always going to be 20 and 40 kHz away!  In reality the QRM is likely going to be close by. 

 

In 1977 I published an article in “ham radio magazine” discussing this subject.  I tested the offending R-4C at 2 kHz in addition to 20 kHz.   In that case the 20-kHz dynamic range was over 80 dB, but the 2-kHz dynamic range was less than 60 dB. 

 

The roofing filter of the R-4C is 8-kHz wide, and in a CW contest, there were many signals inside that 8-kHz filter, overloading the radio.  I installed a 600 Hz roofing filter in the R-4C, and the problem went away.  When testing the Sherwood modified R-4C at 2 kHz, the dynamic range was over 80 dB, just like it was with the 20-kHz test. 

 

Most radios in the 70s and 80s had gone to up-conversion for two reasons.  This got rid of the necessity of a preselector, and it allowed general coverage without a dead spot equal to the first IF frequency.  In the up-conversion radio, the first IF was always above 10 meters, and often above 6 meters.  All first IF filters were at least 15 kHz wide, and there was the problem.  The Drake 8-kHz first IF was bad enough, and now almost all the radios for 20+ years had a first IF what was at least 15-kHz wide.  Almost all of them had a close-in dynamic range around 70 dB.  That was barely adequate for SSB and inadequate for CW. 

 

For more than 40 years I have been testing radios, and I decided to sort the table on my website by close-in dynamic range at 2-kHz spacing.  This was the “acid test” for CW contest / DX pile up operation. 

 

In 2003 the Ten-Tec Orion came along, and it went back to a 9 MHz first IF (instead of 40 to 70 MHz), and offered a narrow CW roofing filter, like I had added to the Drake.  It was the first commercial rig to be better than the Sherwood roofing filter modified R-4C.  Later the Elecraft K3 came to market, and now Yaesu and Kenwood have what is now called “down-conversion” radios with a low frequency first IF. 

 

What do you need in the way of close-in dynamic range?  You want a number of at least 70 dB for SSB, and at least 80 dB for CW.  A 10 dB safety factor would be nice, so that means you would prefer 80 dB for SSB and 90 dB for CW.  Now there are approximately 20 radios that meet that specification.

 

Note:  Several transceivers have multiple listening on my website. In some cases, like the K3 which has been available for over 10 years, the performance has improved over that decade.  There are several “second samples” of radios tested over the past 1 to 5 years. Direct sampling radios have more variation from sample to sample than legacy superhet radios.    

 

Rob Sherwood

NC0B

 

Rev F

 

 

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