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Old 04-08-2019, 12:14   #1621
AF4MP
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - no audio decoded, 8.11 dB max SNR.
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File Type: png 3955-190804-0500-0559-Zyg.png (34.3 KB, 24 views)
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Old 10-08-2019, 11:08   #1622
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 0.11% audio decoded, 11.53 dB max SNR.
Attached Images
File Type: png 3955-190810-0500-0559-Zyg.png (33.3 KB, 23 views)
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Old 11-08-2019, 10:47   #1623
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 0.02% audio decoded, 11.37 dB max SNR.
Attached Images
File Type: png 3955-190811-0500-0559-Zyg.png (34.2 KB, 20 views)
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Old 11-08-2019, 10:52   #1624
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Hi Zyg,
I'm surprised that you're getting anything at all!
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Old 12-08-2019, 15:01   #1625
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - no audio decoded, 6.63 dB max SNR.

Quote:
Originally Posted by Digger
I'm surprised that you're getting anything at all!

Hi Terje,

As can be seen from the VOACAP area plot for this month at 0500 z (attachment 2) there is a relatively strong RF signal along the entire east coast of North America. This is due to the signal path, from the back of the transmit antenna, being in darkness. Local time at my receive location is 0100 in the morning!

In fact, at that time, there is more of an S9 signal level behind the beam than in front of it!

The problem is that the back of the beam signal "ray path" is not optimum and consequently has large doppler components inhibiting audio decoding.

The occasions that do have audio decoding usually follow periods of solar and ionospheric disturbances that leave a much denser electron level along the path which reduce path pertubations.
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File Type: png 3955-190812-0500-0559-Zyg.png (31.1 KB, 23 views)
File Type: png BBC3955 0500z Aug 2019.png (89.6 KB, 34 views)
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Old 13-08-2019, 11:41   #1626
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 0.36% audio decoded, 12.04 dB max SNR.

The recent minor geomagnetic storm allowing a little decoding this morning.
Attached Images
File Type: png 3955-190813-0500-0559-Zyg.png (35.3 KB, 21 views)
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Old 15-08-2019, 12:48   #1627
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 2.71% audio decoded, 14.44 dB max SNR.
Attached Images
File Type: png 3955-190815-0500-0559-Zyg.png (35.4 KB, 18 views)
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Old 16-08-2019, 23:22   #1628
AF4MP
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - no audio decoded, 10.71 dB max SNR.
Attached Images
File Type: png 3955-190816-0500-0559-Zyg.png (35.0 KB, 18 views)
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Old 17-08-2019, 12:22   #1629
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - no audio decoded, 11.19 dB max SNR.
Attached Images
File Type: png 3955-190817-0500-0559-Zyg.png (33.0 KB, 19 views)
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Old 18-08-2019, 12:30   #1630
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - no audio decoded, 10.36 dB max SNR.
Attached Images
File Type: png 3955-190818-0500-0559-Zyg.png (32.3 KB, 18 views)
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Old 19-08-2019, 14:27   #1631
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 0.19% audio decoded, 12.49 dB max SNR.
Attached Images
File Type: png 3955-190819-0500-0559-Zyg.png (35.8 KB, 16 views)
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Old 28-08-2019, 15:13   #1632
AF4MP
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - no audio decoded, 11.90 dB max SNR.
Attached Images
File Type: png 3955-190828-0500-0559-Zyg.png (33.9 KB, 13 views)
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Old 29-08-2019, 22:44   #1633
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 1.67% audio decoded, 13.33 dB max SNR.
Attached Images
File Type: png 3955-190829-0500-0559-Zyg.png (35.9 KB, 9 views)
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Old 30-08-2019, 15:41   #1634
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 0.04% audio decoded, 11.45 dB max SNR.
Attached Images
File Type: png 3955-190830-0500-0559-Zyg.png (32.0 KB, 8 views)
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Old 31-08-2019, 13:39   #1635
AF4MP
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BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 0.10% audio decoded, 12.33 dB max SNR.
Attached Images
File Type: png 3955-190831-0500-0559-Zyg.png (35.4 KB, 9 views)
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