Running a DRM Transmitter 30mW Test at lab. Tx is set at a bit more than 30mW AVG power, connected at 50R load and with a 1m lead in parallel. Receiver was a modified ICOM PCR100 with a homemade IF converter board added at it. Rx antenna used was just a small homemade UHF whip with an added 1m lead. Distance between Tx lab workbench and Rx point was ~12m at a near seperate thru a wall, sideroom. Encoder software was SPARK (www.drm-sender.de) for Tx, at 9KHz DRM spectrum, 0Hz IQ baseband, and a standard low cost PC audiocard. Frequency was 1440KHz (Medium Wave Band). SA span showing the DRM mask is set at 50KHz. Rx Decoding software used is the SoDiRa v0.74 for DRM A & B modes, while also the DREAM was tested with better decoding results at DRM C mode! Audio is added on video because of use of a camera without audio for this video. See our other video from the same tests with another camera with audio, provided a demo with the real audio captured while decoding our DRM testings...
DRM MW Transmitter 30mW Test!
on Monday, November 5, 2012
DRM MW Transmitter 30mW Test! Video Clips. Duration : 2.35 Mins.
Running a DRM Transmitter 30mW Test at lab. Tx is set at a bit more than 30mW AVG power, connected at 50R load and with a 1m lead in parallel. Receiver was a modified ICOM PCR100 with a homemade IF converter board added at it. Rx antenna used was just a small homemade UHF whip with an added 1m lead. Distance between Tx lab workbench and Rx point was ~12m at a near seperate thru a wall, sideroom. Encoder software was SPARK (www.drm-sender.de) for Tx, at 9KHz DRM spectrum, 0Hz IQ baseband, and a standard low cost PC audiocard. Frequency was 1440KHz (Medium Wave Band). SA span showing the DRM mask is set at 50KHz. Rx Decoding software used is the SoDiRa v0.74 for DRM A & B modes, while also the DREAM was tested with better decoding results at DRM C mode! Audio is added on video because of use of a camera without audio for this video. See our other video from the same tests with another camera with audio, provided a demo with the real audio captured while decoding our DRM testings...
Running a DRM Transmitter 30mW Test at lab. Tx is set at a bit more than 30mW AVG power, connected at 50R load and with a 1m lead in parallel. Receiver was a modified ICOM PCR100 with a homemade IF converter board added at it. Rx antenna used was just a small homemade UHF whip with an added 1m lead. Distance between Tx lab workbench and Rx point was ~12m at a near seperate thru a wall, sideroom. Encoder software was SPARK (www.drm-sender.de) for Tx, at 9KHz DRM spectrum, 0Hz IQ baseband, and a standard low cost PC audiocard. Frequency was 1440KHz (Medium Wave Band). SA span showing the DRM mask is set at 50KHz. Rx Decoding software used is the SoDiRa v0.74 for DRM A & B modes, while also the DREAM was tested with better decoding results at DRM C mode! Audio is added on video because of use of a camera without audio for this video. See our other video from the same tests with another camera with audio, provided a demo with the real audio captured while decoding our DRM testings...
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