9730 kHz RTL test [Archive] - DRM Software Radio Forums

jbriggs

17-12-2006, 22:59

I would be grateful for comments on the following planned for tomorrow, Monday December 18th for 1 day only:

9730 kHz from Austria 1100-1230 UTC.
50 kW DRM
Antenna HR 4/3/0.6
295 degrees (Benelux)

Any comments on audio quality field-strength etc much appreciated. Thanks, James

simone

18-12-2006, 13:00

Hi James,
started quite good, only a weak signal after the first 35 minutes for the rest of the transmission, no problems with mode A, audio quality was OK considering the bitrate.
Simone

simone

18-12-2006, 13:01

... also no problems with the MP40 at the beginning.
Simone

LX1RE

18-12-2006, 14:10

Hi,

Reception with Morphy Richards in my home in Luxembourg, Average low fieldstrength, some dropouts, worse after 12:10 UTC with SNR's below 9dB. Rather bad sound quality, audio input level seems to be not correct.

73's

Eugene LX1RE

carknue

18-12-2006, 15:25

Hi James,

same results like Simone. After the first 30 min, no reception was possible again. See graph with fieldstrength. Sound quality was not the best.

simone

18-12-2006, 20:08

Here is a typical example what the audio spectrum looked like and a recording
from music (http://www.stoepplernet.de/drm/RTL_test_9730_music.mp3) and speech (http://www.stoepplernet.de/drm/RTL_test_9730_speech.mp3).
Simone