DRM from CBC (9800 kHz from Sackville)

[Alan Johnson]

CBC 11955 kHz 0300 UTC

Slightly rocky start, but held out for 14 minutes longer tonight.

[chemclouds]

CBC 9800

VATICAN RADIO------20:04 TO 20:30
RADIO NETHERLANDS------20:30 TO 21:00
RADIO CANADA INTERNATIONAL------21:00 TO 22:00
DEUTSCHE WELLE RADIO------22:00 TO 22:30
RADIO SWEDEN INTERNATIONAL------22:30 TO 23:00
BBC WORLD SERVICE------23:00 TO 23:58

Not to bad tonight 97.4%.
Carl

[VE3MEO]

9800 Toronto 2004-09-29 22:47-23:58 65%/61% 23/20 dB max SNR dual receivers

Poor here tonight except for last 10 minutes. The margin of performance for SNR narrows between the two receivers for poor conditions but the simpler receiver outperfroms for audio decoding.

73 Tom

[chemclouds]

CBC 6140

ALL BROADCASTS ARE IN COORDINATED UNIVERSAL TIME. UTC

CHINA RADIO INTERNATIONAL------01:05 TO 01:58

Look at this! 100%


Carl

[VE3MEO]

CRI 6140 Toronto 2004-09-30 01:07-01:58 98.5/96.4% 31.4/22 dB max SNR dual receivers

Wow, highest SNR yet on my DX-394A, no-AGC, simpler NE612 downconverter with no anti-image filter! Conditions good - S9+40 but multipath pushing impulse response close to guard interval. The dropout at 1:09 was me retuning the receivers from 6140 to 6142.4 for assumed best performance (although it may not be true for both). At 1:15, I think the blip was the insertion of the 20dB pads. At 1:28, I was retuning the common antenna tuner as the 2nd receiver was now tuned to DW 3995. Otherwise, I think decoding would have been close to 100%, as it was for the last 25 minutes.

73, Tom

[Alan Johnson]

CBC 6140

Pretty good in the west tonight - discount the first five minutes, as I was selecting the best antenna and setting the soundcard mixer levels.

73,
Alan

[chemclouds]

CBC 11955

Hi Alan,
I have noticed you have been diligent in submitting reports. It is appreciated. Don`t forget, you are helping DRM to be a success. Keep them coming when you can.

BBC WORLD SERVICE------03:00 TO 03:58

I haven`t been able to receive anything on this frequency for a few weeks now. It`s good to have you back again. 97.6%
Carl

[Alan Johnson]

CBC 11955 kHz 0300 UTC

The transmission held up for the entire hour - only a few brief audible dropouts towards the end.

Alan

[chemclouds]

CBC 9800

ALL BROADCASTS ARE IN COORDINATED UNIVERSAL TIME. UTC

VATICAN RADIO------20:06 TO 20:30
RADIO NETHERLANDS------20:30 TO 21:00
RADIO CANADA INTERNATIONAL------21:00 TO 22:00
DEUTSCHE WELLE RADIO------22:00 TO 22:30
RADIO SWEDEN INTERNATIONAL------22:30 TO 23:00
BBC WORLD SERVICE------23:00 TO 23:59

Smooth sailing until the last hour. 96.5%
Carl

[chemclouds]

CBC 6140

ALL BROADCASTS ARE IN COORDINATED UNIVERSAL TIME. UTC

CHINA RADIO INTERNATIONAL------01:00 TO 01:58


Smooth sailing all the way.100%
Carl

[Alan Johnson]

CBC 11955 kHz 0300 UTC

A full hour of good reception. Perhaps it was the A index of 2 and K index of 0 at 0310 UTC.

Alan

[chemclouds]

CBC 9800

ALL BROADCASTS ARE IN COORDINATED UNIVERSAL TIME. UTC

VATICAN RADIO------19:59 TO 20:30
RADIO NETHERLANDS------20:30 TO 21:00
RADIO CANADA INTERNATIONAL------21:00 TO 22:00
DEUTSCHE WELLE RADIO------22:00 TO 22:30
RADIO SWEDEN INTERNATIONAL------22:30 TO 23:00
BBC WORLD SERVICE------23:00 TO 23:59
98.5%

What happened before 20:45 ? Did Audio Equipment take Chicken Flu ?
Carl

[VE3MEO]

9800 Toronto 2004-10-01 22:57-23:58 90.5/89.6% 28.4/24.9 dB max dual rcvrs

Not so good. Only 12 minutes @100%. Don't know why the SNR crossed over at 23:28. It seemed like my decoders had swapped sides - I was adjusting the RF Gain of what should have been the left side but seeing results on the right. Yet later, after stopping the logs, the radios were properly associated with the left-right positions on screen. Is it possible that the data for the 1st radio changes colour at that point?

73, Tom

[chemclouds]

CBC 6140

ALL BROADCASTS ARE IN COORDINATED UNIVERSAL TIME. UTC

CHINA RADIO INTERNATIONAL------01:03 TO 01:58

Not to bad tonight. 99.9%

Hey Tom,
Check out Ludo`s tranmission tomorrow if you can.
Carl

[VE3MEO]

CRI 6140 Toronto 2004-10-02 01:03-01:58 98.3/98.3% 31.6/22.9 dB max SNR dual DX-394's

Had I not been fiddling the tuner and the pads and doing other things on the computer, I think this might have been 99.8% over the whole hour instead of the 46 minutes marked. Seems like DReaM has a logging error for the frames decoded where it occasionally incorrectly attributes more frames in one minute and less frames in the next but the total over two minutes is right. This is noticeable when there are no dropouts and the frame rate is 1500 per minute. The spike around 1:38 is logged thus:

0033 27 150 1500/10 0
0034 29 150 1510/10 0
0035 30 176 1760/10 0
0036 31 124 1230/10 0
0037 30 150 1500/10 0

The average of elapsed minutes 34-36 is 1500, as it should be for perfect decoding.

73, Tom