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Search: Posts Made By: AF4MP
Forum: Reception Results - Recent Posts 19-09-2018, 15:11
Replies: 126
Views: 7,414
Posted By AF4MP
Marcel, Merci. A good example of how poor...

Marcel,

Merci.

A good example of how poor this broadcast sounds!
Forum: Reception Results - Recent Posts 17-09-2018, 16:54
Replies: 126
Views: 7,414
Posted By AF4MP
Reception of WINB's DRM portion of their signal,...

Reception of WINB's DRM portion of their signal, in Europe, continues to be difficult. The best reception (if you can call it that) by KiwiSDR web receivers is those that utilize good antennas and...
Forum: Reception Results - Recent Posts 07-09-2018, 16:00
Replies: 126
Views: 7,414
Posted By AF4MP
I doubt it. Moving a Rhombic antenna is not a...

I doubt it. Moving a Rhombic antenna is not a trivial task!

WINB is transmitting with an output power of 10 KW (according to the FCC filing) and that power is split between the Datacasting and DRM...
Forum: Reception Results - Recent Posts 05-09-2018, 23:59
Replies: 5
Views: 432
Posted By AF4MP
Go to message #2 on the thread...

Go to message #2 on the thread http://www.drmrx.org/forum/showthread.php?t=2812
Forum: Reception Results - Recent Posts 27-08-2018, 22:57
Replies: 18
Views: 1,021
Posted By AF4MP
Nous devrons attendre et voire...

Nous devrons attendre et voire...
Forum: Reception Results - Recent Posts 26-08-2018, 02:27
Replies: 18
Views: 1,021
Posted By AF4MP
Although the KiwiSDR TDoA shows the transmitter...

Although the KiwiSDR TDoA shows the transmitter location as Switzerland, the Principality of Liechtenstein is only 30 or so kilometers to the north and close enough to the DF circles, to make that...
Forum: Reception Results - Recent Posts 26-08-2018, 02:10
Replies: 18
Views: 1,021
Posted By AF4MP
In fact Marcel's screen ID does show B/10 kHz as...

In fact Marcel's screen ID does show B/10 kHz as the Mode/Bandwidth (see attachment).
Forum: Reception Results - Recent Posts 26-08-2018, 02:00
Replies: 18
Views: 1,021
Posted By AF4MP
Interesting, 'cos at the time I was trying to DF...

Interesting, 'cos at the time I was trying to DF the signal the spectrum looked like normal 10 kHz DRM.

Marcel's SODIRA scan also shows a normal type DRM signal but perhaps 9 kHz or a little less...
Forum: Reception Results - Recent Posts 25-08-2018, 23:01
Replies: 420
Views: 31,698
Posted By AF4MP
Radio Kuwait 15540 kHz Reception near Atlanta, Georgia, USA

This afternoon's reception - 26.89% audio decoded, 18.65 dB max SNR.

The receive antenna was damaged by a storm recently and half of it is laying on the ground.
Forum: Reception Results - Recent Posts 25-08-2018, 20:20
Replies: 18
Views: 1,021
Posted By AF4MP
KiwiSDR direction finding via TDoA puts the...

KiwiSDR direction finding via TDoA puts the transmitter somewhere in the Alps of SE Switzerland near the border of NW Italy at approximately 46.35 deg N, 9.70 deg E.
Forum: Reception Results - Recent Posts 25-08-2018, 12:07
Replies: 1,434
Views: 238,613
Posted By AF4MP
BBC 3955 KHz reception near Atlanta, Georgia, USA

The overnight reception (from the back of the beam) - 43.92% audio decoded, 17.60 dB max SNR.

Excellent conditions and good reception despite half of the antenna lying on the ground after the last...
Forum: Reception Results - Recent Posts 22-08-2018, 20:07
Replies: 8
Views: 585
Posted By AF4MP
No, unfortunately the current version of Dream...

No, unfortunately the current version of Dream does not have xHE-AAC decoding capability.

That is not exactly the fault of Dream as it is that the decoder supplier Fraunhofer IIS has not yet made...
Forum: Reception Results - Recent Posts 18-08-2018, 15:13
Replies: 8
Views: 585
Posted By AF4MP
Hi Alex, My apologies you are...

Hi Alex,

My apologies you are correct!

http://www.asiaradiotoday.com/news/abu-dhabi-get-first-drm-station
Forum: Reception Results - Recent Posts 17-08-2018, 23:20
Replies: 8
Views: 585
Posted By AF4MP
Hi Alex, That must be the 810 kHz transmission...

Hi Alex,

That must be the 810 kHz transmission from Jabalpur a city located in the central part of India. "Pravasi Bharathi" is an Indian program.

Just like the 828 kHz DRM transmission in Delhi,...
Forum: Reception Results - Recent Posts 17-08-2018, 22:33
Replies: 126
Views: 7,414
Posted By AF4MP
Hi Alan, Although the WINB datacasting is half...

Hi Alan,

Although the WINB datacasting is half the bandwidth of its transmitted signal it is not actually part of the DRM transmission. The datacasting, interestingly, has not been publicly...
Forum: Reception Results - Recent Posts 17-08-2018, 15:08
Replies: 75
Views: 3,586
Posted By AF4MP
China 6030 kHz KiwiSDR reception Yokohama, Japan

Today's reception via the KiwiSDR web receiver in Yokohama, Japan. Audio decoding was 83.12% for the hour and then the auto time-out switched off the internet feed.

The transmitting antenna,...
Forum: Reception Results - Recent Posts 14-08-2018, 14:34
Replies: 126
Views: 7,414
Posted By AF4MP
Hi Alan, With this WINB datacasting in mind,...

Hi Alan,

With this WINB datacasting in mind, you might be interested in the following link which is Part 1 of a series of blogs describing the recent use of shortwave radio for high speed...
Forum: Reception Results - Recent Posts 13-08-2018, 23:20
Replies: 126
Views: 7,414
Posted By AF4MP
Start reading this thread at message number 33...

Start reading this thread at message number 33 for the answer to your question.
Forum: Reception Results - Recent Posts 10-08-2018, 17:06
Replies: 126
Views: 7,414
Posted By AF4MP
WINB 15670 kHz Reception in Sardinia, Italy

VOACAP indicates that the WINB datacasting (plus sibling DRM broadcast) signal should be "stronger" along the Mediterranean Sea at around 1500Z.

Here are two logs from a KiwiSDR receiver using a...
Forum: Reception Results - Recent Posts 10-08-2018, 16:39
Replies: 126
Views: 7,414
Posted By AF4MP
WINB 15670 kHz Reception in Southwest England

This morning WINB resumed datacasting (together with its poor DRM sibling transmission).

Checking the various KiwiSDR web receivers in Europe there were very few that were receiving a signal good...
Forum: Reception Results - Recent Posts 07-08-2018, 16:04
Replies: 75
Views: 3,586
Posted By AF4MP
China 6030 kHz reception at Point Reyes, California, USA

This mornings (1.5 hours) reception at the Maritime Historical Radio Society (MHRS) receiver site in the Point Reyes National Seashore Park, northwest of San Francisco.

The SNR peaked to 22.55...
Forum: Reception Results - Recent Posts 04-08-2018, 03:09
Replies: 7
Views: 469
Posted By AF4MP
in addition to Chris' comments the screenID...

in addition to Chris' comments the screenID indicates that they are transmitting MM (multi-mode) and the Journaline Tab is highlighted.

Clicking on the Tab shows a blank Journaline. (The choice of...
Forum: General Topics 30-07-2018, 01:15
Replies: 5
Views: 384
Posted By AF4MP
Yes, depending on the quality; for example, a 22...

Yes, depending on the quality; for example, a 22 kbps mono signal becomes stereo with an extra 2 kbps.

DRM was designed from the start to be a higher quality transmission platform than standard AM...
Forum: General Topics 29-07-2018, 23:29
Replies: 5
Views: 384
Posted By AF4MP
Very basically the original stereo signal is...

Very basically the original stereo signal is encoded as mono on a bit stream with the missing stereo parameter information added as extra bits.

At the receiver the bit stream is decoded as mono...
Forum: Reception Results - Recent Posts 29-07-2018, 17:24
Replies: 75
Views: 3,586
Posted By AF4MP
China 6030 kHz KiwiSDR reception Yokohama, Japan

Some of the KiwiSDR web receivers in Japan were receiving and decoding and others were not.

Here is today's log from Yokohama (only 1 hour permitted with that receiver).
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