| DRM - Reception logs | Making some tests today... |
---------------
Conclusions for now
- The Netvista Display is also causing noise to the Sony ICF2001D,
on 6095
- My Sony ICF2001D gives much lower SNR compared to the TS440 (by 8
/ 9 dB !)
- The Sony is sensitive to the Thinkpad noise, even when soundcard
wire not connected.
---------------
10H30 : RTL 6095, SONY ICF 2001D + IBM Netvista 08H05,
>>
OK but the SNR is quite low (18dB)
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 10:30:31
Frequency
6095 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
RTL DRM
Bitrate
20.88 kbps
Mode
B
Bandwidth
10 kHz
Comment
Sony ICF2001D+Netvista
MINUTE
SNR SYNC AUDIO
TYPE
0000 18 150
1130/10 0
0001 18 150
1220/10 0
0002 18 150
1260/10 0 PHOTO
10H32
0003 18 150
820/10 0
0004 19 150
1240/10 0
From 10H35, switching off the computer screen display
0005 19 150
1490/10 0 10H35
0006 19 150
1460/10 0
0007 19 150
1500/10 0 PHOTO
10H37
0008 20 149
1500/10 0
0009 18 150
1280/10 0
0010 19 150
1460/10 0
0011 19 150
1500/10 0
0012 19 150
1500/10 0
0013 19 150
1500/10 0
0014 19 149
1500/10 0
0015 19 150
1470/10 0
From 10H46 switching ON the computer display
0016 18 150
880/10 0
0017 18 150
1030/10 0
0018 18 150
1200/10 0
0019 18 149
1080/10 0
0020 17 150
860/10 0
0021 18 150
1060/10 0
From 10H52 switching OFF the computer display
0022 19 150
1500/10 0
0023 19 150
1440/10 0
0024 19 150
1480/10 0
0025 20 150
1450/10 0
0026 19 150
1470/10 0
0027 19 150
1480/10 0
SNR min: 15.5, max: 20.6
CRC:
0x047a
<<<<
We
can see above that the Display is causing noise
to
the Sony...
11H00,
DW Sines 15440 kHz (AAC SBR mono 20.9kbps)
SONY
receiver (signal level S10) + Netvista computer
Signal
is OK, even if SNR is only 18dB
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 11:00:14
Frequency
15440 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
DW-DRM
Bitrate
20.88 kbps
Mode
B
Bandwidth
10 kHz
Comment
Sony ICF2001D+Netvista
MINUTE
SNR SYNC AUDIO
TYPE
0000 18 150
1500/10 0
0001 15 150
880/10 0
0002 19 150
1500/10 0 PHOTO
11H02
0003 19 150
1500/10 0
0004 17 149
1050/10 0
0005 12 150
30/10 0
0006 16 150
1310/10 0
0007 19 150
1500/10 0
0008 19 150
1500/10 0
0009 16 150
840/10 0
0010 17 149
1430/10 0
0011 17 150
1320/10 0
0012 17 150
1170/10 0
0013 18 150
1500/10 0
0014 16 127
1050/10 0
11H15, replacing the SONY ICF2001D by the KENWOOD TS440
SNR rises to 26dB !! although there is some QSB.
0015 22 138
1090/10 0 11H15
0016 24 150
1280/10 0
0017 13 147
10/10 0
0018 18 149
730/10 0
0019 24 150
1500/10 0
0020 25 149
1500/10 0
0021 20 149
920/10 0
0022 24 149
1260/10 0
0023 22 149
1210/10 0
0024 24 150
1500/10 0
0025 18 148
610/10 0
0026 21 150
1500/10 0
0027 18 150
860/10 0
0028 24 149
1500/10 0
0029 22 125
1230/10 0
11H30 replacing the Kenwood by the SONY
0030 17 138
980/10 0
0031 18 150
1500/10 0
0032 16 150
940/10 0
0033 19 150
1500/10 0
0034 15 150
360/10 0
0035 14 150
940/10 0
0036 18 150
1500/10 0
0037 18 150
1500/10 0
0038 15 149
670/10 0
0039 16 150
1200/10 0
0040 19 151
1510/10 0
0041 16 150
1070/10 0
0042 19 150
1500/10 0
0043 19 150
1500/10 0
0044 19 150
1500/10 0
0045 18 118
820/10 0
11H46 replacing the Sony by the Kenwood:
0046 21 149
1300/10 0
0047 26 150
1500/10 0
0048 26 150
1500/10 0
0049 24 150
1280/10 0
0050 18 149
580/10 0
0051 18 150
900/10 0
0052 24 149
1500/10 0
0053 26 150
1500/10 0
0054 22 149
1470/10 0
0055 26 150
1500/10 0
0056 24 150
1340/10 0
0057 26 149
1420/10 0
0058 25 149
1410/10 0
0059 22 149
1270/10 0
0060 25 150
1500/10 0
SNR min: 0.0, max: 27.9
CRC:
0x6f4a
<<<<
Conclusion
: Low SNR obtained from my SONY.
12H05,
Flevo 9850kHz (AAC mono 14.5kbps)
With
SONY ICF2001D and Netvista computer
(monitor
OFF) - Signal level S7 on Sony.
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 12:05:29
Frequency
9850 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
Bouquet Flevo NL
Bitrate
14.48 kbps
Mode
B
Bandwidth
10 kHz
Comment
Netvista
MINUTE
SNR SYNC AUDIO
TYPE
0000 10 149
350/10 0
0001 12 149
950/10 0
0002 11 139
450/10 0
0003 11 149
600/10 0
0004 13 149
970/10 0
0005 12 150
800/10 0
0006 11 150
530/10 0
0007 11 124
790/10 0
0008 10 131
270/10 0
0009 12 150
970/10 0
0010 10 149
240/10 0
0011 12 147
940/10 0
0012 13 148
840/10 0
0013 6 107
0/00 0
0014 12 149
1070/10 0
0015 12 133
760/10 0
0016 7 99
120/10 0
0017 11 148
590/10 0
0018 10 99
490/10 0
0019 6 103
0/00 0
0020 10 149
270/10 0
0021 6 103
0/00 0
SNR min: 0.0, max: 16.3
CRC:
0x31c3
<<<<
12H28 replacing the SONY by the KENWOOD :
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 12:28:22
Frequency
9850 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
Bouquet Flevo NL
Bitrate
14.48 kbps
Mode
B
Bandwidth
10 kHz
Comment
Netvista
MINUTE
SNR SYNC AUDIO
TYPE
0000 25 150
1490/10 0
0001 25 150
1460/10 0
0002 21 148
690/10 0
0003 22 149
780/10 0
0004 25 148
1160/10 0
0005 26 148
1380/10 0
0006 27 150
1470/10 0
0007 27 150
1460/10 0
0008 24 150
1220/10 0
0009 22 148
800/10 0
0010 25 148
1320/10 0
0011 28 150
1500/10 0
0012 26 149
1080/10 0
0013 25 148
1450/10 0
0014 25 148
1260/10 0
0015 26 150
1250/10 0
0016 27 109
1060/10 0
12H45
replacing the KENWOOD by the SONY :
(the
PB may be the computer?)
0017 10 146
470/10 0
0018 3 42
0/00 0
0019 7 129
30/10 0
0020 10 141
390/10 0
0021 5 52
40/10 0
0022 9 111
400/10 0
SNR min: 0.0, max: 28.9
CRC:
0x9344
<<<<
10H52
replacing NETVISTA by THINKPAD (on batteries),
still
with the SONY : SNR too low.
There
must be noise caused by the Thinkpad to the Sony too...
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 12:52:21
Frequency
9850 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
n/a
Bitrate
n/a
Mode
n/a
Bandwidth
n/a
Comment
Sony+ Thinkpad
MINUTE
SNR SYNC AUDIO
TYPE
0000 0
1 0/00
0
0001 0
0 0/00
0
0002 0
0 0/00
0
0003 0
0 0/00
0
0004 0
0 0/00
0
0005 0
0 0/00
0
0006 0
0 0/00
0
SNR min: 0.0, max: 0.0
CRC:
0xf499
<<<<
13H00,
9815kHz Flevo (AAC mono 14.5kbps)
with
SONY ICF2001D and THINKPAD 570E.
>>
SNR is too low again, only 9dB!
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 13:00:00
Frequency
9815 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
Bouquet Flevo NL
Bitrate
14.48 kbps
Mode
B
Bandwidth
10 kHz
Comment
Sony+ Thinkpad
MINUTE
SNR SYNC AUDIO
TYPE
0000 8 149
110/10 0
0001 6 83
0/00 0
0002 8 144
50/10 0
0003 9 150
270/10 0
0004 9 126
70/10 0
At 13H05, replacing the SONY by the TS440
>> SNR up to 24dB!
0005 25 111
1030/10 0
0006 28 150
1500/10 0
0007 28 150
1500/10 0
0008 27 149
1500/10 0
0009 27 150
1500/10 0
0010 27 148
1500/10 0
0011 25 150
1480/10 0
0012 27 150
1490/10 0
0013 27 149
1500/10 0
0014 24 145
1500/10 0
SNR min: 0.0, max: 28.5
CRC:
0xca28
<<<<
13H16
: DW-W 9655kHz (AAC SBR param stereo 20.9 kbps)
with
SONY ICF2001D (Sig level S8) and THINKPAD
>>
received OK with SNR 14dB
>>>>
DRMSoftwareRadio-MERLIN-00000127
Software
Version 2.0.34
Starttime
(UTC) 2004-01-10 13:16:18
Frequency
9655 kHz
Latitude
44°49'N
Longitude
0°38'W
Label
DW-Wertachtal
Bitrate
20.88 kbps
Mode
B
Bandwidth
10 kHz
Comment
Sony+ Thinkpad
MINUTE
SNR SYNC AUDIO
TYPE
0000 13 149
840/10 0
0001 14 150
1430/10 0
0002 12 149
700/10 0
0003 10 150
0/00 0
0004 13 150
1250/10 0
0005 14 149
950/10 0
0006 11 150
350/10 0
0007 13 150
1400/10 0
0008 12 150
1100/10 0
0009 13 147
1460/10 0
13H26 replacing the Sony by the TS440:
>> SNR rising to 23dB !
0010 22 143
1180/10 0
0011 24 150
1500/10 0
0012 22 150
1500/10 0
0013 24 149
1500/10 0
0014 24 150
1500/10 0
0015 23 150
1430/10 0
0016 22 150
1380/10 0
0017 22 150
1400/10 0
0018 22 150
1420/10 0
0019 23 150
1480/10 0
0020 20 149
1230/10 0
0021 23 150
1420/10 0
0022 24 150
1500/10 0
0023 23 150
1500/10 0
0024 24 150
1500/10 0
0025 24 94
940/10 0
SNR min: 0.0, max: 24.8
CRC:
0xa463
<<<<
Thinkpad
battery empty here...
======================================
Thinkpad Computer=
IBM Thinkpad 570E, P2 500 MHz, Win2000, 196 Mo.
Built-in sound card by "Crystal Sound Fusion"
TS440 RX=
TS440 + changed AM filter + AM pickup point + AM mode,
Ant dipole 2x7m on balcony + 5m coax cable .
(My TS440 mod is described here)
Mixer=
SAT-Service crystal mixer 467kHz outside the rx
with a 9v battery,
Netvista computer=
IBM Netvista A30P P4 1.8GHz
built-in soundcard
Sony ICF 2001D=
Direct pickup point as indicated by LA6XJ in DRMRX forum
(pin 7 of IC1 - Photos posted by LA6XJ: ph1,
ph2, ph3)
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