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Search: Posts Made By: AF4MP
Forum: Reception Results - Recent Posts 01-07-2018, 16:45
Replies: 405
Views: 23,567
Posted By AF4MP
Yes, the operation was a success but the patient...

Yes, the operation was a success but the patient died!
Forum: Reception Results - Recent Posts 19-06-2018, 14:29
Replies: 405
Views: 23,567
Posted By AF4MP
Hi Christian, Thank you for the information, it...

Hi Christian,

Thank you for the information, it is most appreciated!
Forum: Reception Results - Recent Posts 18-06-2018, 19:47
Replies: 405
Views: 23,567
Posted By AF4MP
The DRM waveform is seen here in the Atlanta area...

The DRM waveform is seen here in the Atlanta area now, and a much stronger signal (no audio obviously) via the KiwiSDR receiver in Boston, MA (about 1500 km north).
Forum: Reception Results - Recent Posts 18-06-2018, 19:20
Replies: 405
Views: 23,567
Posted By AF4MP
Bitte, was ist die Macht des Senders auf dieser...

Bitte, was ist die Macht des Senders auf dieser Frequenz?
Forum: Reception Results - Recent Posts 18-06-2018, 15:52
Replies: 83
Views: 2,846
Posted By AF4MP
WINB with FLdigi

Quite easy to look at the WINB datacasting portion of the signal with FLdigi (see Attachment - small size because of Forum's file size restriction).

The data signal is there even when the DRM is...
Forum: Reception Results - Recent Posts 18-06-2018, 15:25
Replies: 83
Views: 2,846
Posted By AF4MP
Attached is the Dream audio spectrum display...

Attached is the Dream audio spectrum display received via the KiwiSDR receiver in Weiser, Idaho, USA just minutes ago.

The audio does not remain for more than a couple of seconds or so and then...
Forum: Reception Results - Recent Posts 18-06-2018, 14:50
Replies: 405
Views: 23,567
Posted By AF4MP
Hi Christian, Please let us know the transmitter...

Hi Christian,

Please let us know the transmitter power that you are using on this frequency.

Thank you,
Forum: Reception Results - Recent Posts 16-06-2018, 21:21
Replies: 405
Views: 23,567
Posted By AF4MP
Radio Kuwait 15540 kHz Reception near Atlanta, Georgia, USA

This afternoon's reception report - 1.48% audio decoded, max SNR 15.25 dB.
Forum: Reception Results - Recent Posts 15-06-2018, 16:46
Replies: 83
Views: 2,846
Posted By AF4MP
I checked the audio bandwidth the other day and...

I checked the audio bandwidth the other day and it was only 3 kHz.

WINB is running their Simulcast DRM service in half the normal bandwidth at 5kHz using 64-QAM in the most robust mode..

This...
Forum: Reception Results - Recent Posts 15-06-2018, 14:00
Replies: 83
Views: 2,846
Posted By AF4MP
Hi Philip, It was probably a momentary glitch,...

Hi Philip,

It was probably a momentary glitch, because the data signal that WINB is simulcasting is not part of the actual DRM encoding.

As mentioned before the technical specifications of DRM do...
Forum: Reception Results - Recent Posts 12-06-2018, 15:09
Replies: 83
Views: 2,846
Posted By AF4MP
WINB Datacasting Signal

I've been trying to figure out what is the WINB Datacast signal.

Looking at the two pictures (see Attachments 1 & 2) taken this morning from the KiwiSDR receiver in south west England, it looks...
Forum: Reception Results - Recent Posts 12-06-2018, 14:57
Replies: 83
Views: 2,846
Posted By AF4MP
WINB 15670 kHz Reception in South West UK

It has been difficult to find KiwiSDR web receivers that could get some decoding today.

One receiver that has a great antenna is located in the south west part of England and was able to decode the...
Forum: Reception Results - Recent Posts 11-06-2018, 20:58
Replies: 83
Views: 2,846
Posted By AF4MP
EBU Reference to VOACAP for DRM Planning Purposes

There have been comments that VOACAP cannot be used for DRM planning purposes.

One of the European Broadcast Union (EBU) DRM Planning Guides:

EBU-Tech 3330 actually gives the VOACAP reference on...
Forum: Reception Results - Recent Posts 11-06-2018, 20:50
Replies: 83
Views: 2,846
Posted By AF4MP
WINB 15670 kHz Simulcast Data/DRM Signal coverage

Here is the VOACAP area coverage map for the WINB 15670 kHz 10 KW DRM simulcast Data/DRM transmission at 1500 z.

This is calculated for a 6ft vertical whip receive antenna. Higher gain receive...
Forum: Reception Results - Recent Posts 11-06-2018, 17:45
Replies: 83
Views: 2,846
Posted By AF4MP
WINB 15670 kHz reception near Atlanta, Georgia, USA

Today's reception report - 0.45% audio decoded, 13.61 dB max SNR.

Hardly any audio decoding which is not surprising.

According to VOACAP there should be a big empty skip zone surrounding the...
Forum: Reception Results - Recent Posts 11-06-2018, 16:44
Replies: 83
Views: 2,846
Posted By AF4MP
WINB Simulcast Datacast/DRM Signal

The first Attachment shows the WINB combo signal spectrum and waterfall as received on the KiwiSDR receiver in northern Spain.

The picture size has been constrained by the file size limitation...
Forum: Reception Results - Recent Posts 11-06-2018, 13:36
Replies: 83
Views: 2,846
Posted By AF4MP
WINB Reception in Northern Spain

There was no signal at 1130 z, this morning, at my location near Atlanta, but as predicted by VOACAP the transmission was being received in Northern Spain.

The KiwiSDR receiver auto timed-out after...
Forum: Reception Results - Recent Posts 10-06-2018, 01:05
Replies: 83
Views: 2,846
Posted By AF4MP
WINB Datacasting continued..

So unless someone can come up with another plausible explanation the signal bandwidth will remain as 10 kHz wide per the FCC filing but the components of that spectrum will be equally divided into...
Forum: Reception Results - Recent Posts 09-06-2018, 23:28
Replies: 83
Views: 2,846
Posted By AF4MP
Question WINB Datcasting - Latency Arbitrage?

I continue to be very slow on the uptake, and yet zfyoung always makes good sense.

I decided to peruse the FCC transmitter application files. What first caught my attention was the emission...
Forum: Reception Results - Recent Posts 09-06-2018, 14:02
Replies: 83
Views: 2,846
Posted By AF4MP
Even if it were, simulcast is not recommended for...

Even if it were, simulcast is not recommended for Shortwave!

According to the EBU Technical Specification ETSI TS 102 509 V1.1.1 (2006-05)

Digital Radio Mondiale (DRM); Single Channel Simulcast...
Forum: Reception Results - Recent Posts 08-06-2018, 20:13
Replies: 83
Views: 2,846
Posted By AF4MP
WINB Bandwidth (Continued)

According to the DRM Consortiums "Tech Books":

The current channel widths for radio broadcasting below 30 MHz are 9 kHz and 10 kHz. The DRM system is designed to be used:

within these nominal...
Forum: Reception Results - Recent Posts 08-06-2018, 18:07
Replies: 11
Views: 503
Posted By AF4MP
Wasn't CELP intended for speech only?

Wasn't CELP intended for speech only?
Forum: Reception Results - Recent Posts 08-06-2018, 17:52
Replies: 83
Views: 2,846
Posted By AF4MP
WINB Transmitted Bandwidth

I'm slow today, but why does the evaluation screen show that the Mode/Bandwidth is B and 5 kHz, yet the spectral bandwidth is 10 kHz?
Forum: Reception Results - Recent Posts 08-06-2018, 16:53
Replies: 83
Views: 2,846
Posted By AF4MP
WINB System Evaluation Screen

Here is the Dream System Evaluation screen for the WINB transmission.

The transmitted spectral shape looks strange, maybe explaining the sporadic audio decoding, that given the strength of the...
Forum: Reception Results - Recent Posts 08-06-2018, 16:46
Replies: 83
Views: 2,846
Posted By AF4MP
WINB 15670 kHz reception near Atlanta, Georgia, USA

Very pleasantly surprised to receive and decode a little of WINB this morning!

Heard an announcement by the Unity Bible Church and a WINB station ID.

Interesting that they are running Mode B at...
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