1. HCJB Global Voice DRM Broadcasts Charles Jacobson HCJB Global Technology Center Elkhart, IN

2. DRM from HCJB Special even broadcasts – NAB, NASB, DX events, etc. Special even broadcasts – NAB, NASB, DX events, etc. Regular broadcasts Regular broadcasts Europe – since May 2007 Europe – since May 2007 Brazil – since January 2008 Brazil – since January 2008

3. DRM from HCJB Equipment Equipment HCJB developed DRM Content Server and modulator HCJB developed DRM Content Server and modulator Siemens class A transmitter Siemens class A transmitter Built in the 1960s, acquired by HCJB in 1990s Built in the 1960s, acquired by HCJB in 1990s Used for SSB, back for tropical band broadcasts Used for SSB, back for tropical band broadcasts Capable of 20 kW analog, 4 kW DRM Capable of 20 kW analog, 4 kW DRM Stearable antenna – high gain parabolic screen Stearable antenna – high gain parabolic screen Rhombic antenna to Brazil Rhombic antenna to Brazil

4. DRM from HCJB European broadcast European broadcast Since May 2007 Since May 2007 Primarily German, some Spanish and English Primarily German, some Spanish and English Summer months on 9815 kHz 0500-0600 UTC Summer months on 9815 kHz 0500-0600 UTC Winter months on 15275, 15350, 1100-1300 UTC Winter months on 15275, 15350, 1100-1300 UTC Used 16 QAM to achieve a decode at 6 db less SNR Used 16 QAM to achieve a decode at 6 db less SNR Used Mode A and Unequal Error Protection to maximize audio qualilty at 14 kbps with SBR Used Mode A and Unequal Error Protection to maximize audio qualilty at 14 kbps with SBR

5. DRM from HCJB European broadcasts European broadcasts Early results very encouraging Early results very encouraging DW monitoring network included HCJB in its regular monitoring DW monitoring network included HCJB in its regular monitoring Received attention from the DRM consotrium Systems Evaluation (SE) group Received attention from the DRM consotrium Systems Evaluation (SE) group Many listeners also monitored and reported Many listeners also monitored and reported See DRMRX forum See DRMRX forum

10. DRM from HCJB Audio recording from listener in Sweden – September 2007 Audio recording from listener in Sweden – September 2007

11. DRM from HCJB Brazil broadcast Brazil broadcast Begun January 2008 Begun January 2008 Using rhombic antenna that will be used for our regular broadcasts once the current Brazil antennas are removed at the end of 2008 Using rhombic antenna that will be used for our regular broadcasts once the current Brazil antennas are removed at the end of 2008 Purpose – to encourage DXs in Brazil to investigate DRM Purpose – to encourage DXs in Brazil to investigate DRM At this point only one person regular monitors At this point only one person regular monitors

12. DRM from HCJB Questions? Questions?