Broadcast Partner DRM-R2 User Guide

DRM-R2 Manual

DRM-R2

Manual

st

edition

1

December 5, 2003

DRM-R2 Manual

About DRM

DRM, short for Digital Radio Mo ndiale, is the wor ld's only non-p roprietary, digital s ystem for AM with th e ability to use ex isting frequencies and bandwidth across the globe.

With near-FM quality sound offering a dramatic improvement over analogue AM, DRM will revita lize the AM broad casting band s below 30 MHz in markets worldwide.

Broadcast Partners is at the forefront of this exciting new technology, putting a lot of effort in research and development.

To let you experience the benefits of DRM programs broadcasted around the globe, Broadcast Partners has developed a lowcost receiver which can be attached to any PC with DRM decoding software.

Broadcast Partners DRM tuner

Broadcast Partners' new tuner is a low-cost solution for innovators in the world of radio who like to experience this new evolution of radio.

Modification of existing tuners (such as Kenwood and Yaesu), with the risk of losing your warranty, is no longer necessary.

This DRM kit delivers the hardware the way you want it.

Specifications

• Listen to up to 4 DRM stations

• Superior Automatic Gain Control

• Operates with standard DRM software (www.drmrx.org)

• Excellent image rejection, sensitivity and selectivity

• Requires separate DRM software (available for approx. €60 at www.drmrx.org)

DRM-R2 Manual

Contents of the kit

The kit consists of an assembled and tested Printed Circuit Board.

Schematic

Frequency selection is done by activating the DIP switch for one of the channel crystals.

Technical specifications

Parameter Description Min. Typ. Max. Unit

General

Receiving band input filter Option A

Option B

Option C Channels - 4 - IF Frequencies IF 1

IF 2

IF 3 Sensitivity - 10 - uV

Audio output

Adjustable output level 0 - 500 mV Output resistance - 5 - kOhm Audio bandwidth 6 - 18 kHz

Power supply

DC Supply voltage 15 - 35 V Current consumption - 100 - mA

Dimensions of PCB

Length - 148 - mm Width - 100 - mm

0

5.4

13.7

-

10.7 455 12

2.0

11.8

17.6

-

MHz MHz MHz

MHz kHz kHz

DRM-R2 Manual

Figure 1: Input filter response Option A

Figure 2: Input filter response Option B

Figure 3: Input filter response Option C

DRM-R2 Manual

Add extra channels

The DRM receiver is capable of receiving four DRM stations. To add a channel, simply add a crystal. The crystals (X1, X2, X3 and X4) are used in the first down conversion from the station frequency to the 10.7 MHz IF frequency. Therefore, the frequency of the crystal should be 10.7 MHz higher than the desired frequency.

Specification of the crystals used:

Parameter Description Min. Typ. Max. Unit

Frequency - Station frequency + 10.7 MHz - MHz Load capacitance - 30 - pF Resonance type Parallel

Example: Crystal for the DRM station of DW, Sines (UK) at 15.44 MHz = 15.44 + 10.7 = 26.14 MHz

Dimensions

More information

www.drm.org for background information on DRM www.drmrx.org for the DRM software project www.broadcastpartners.nl, [email protected] for more information on Broadcast Partners

DRM-R2 Manual

Appendix A: Current DRM stations

Days kHz Beam Target Power Programme Language Site

UTC

0000-0059 daily 6010 268 NE USA/Canada 70 BBCWS English Sackville 0000-2400 daily 531 ND NE Germany 2 531 digital German Burg 0000-2400 daily 1485 ND SW Germany 0,3 SWR Das Ding German Kaiserslautern

0000-2400 daily 15896 ND Erlangen 0,1 0000-2400 daily 25765 ND Rennes 0,1 TDF Radio O French Rennes

0000-2400 irregular 855 ND Berlin 2,5 DLR German Berlin-Britz 0000-2400 daily 729 ND NE Germany 1 DLF German Putbus 0000-2400 daily 26012 ND Nuernberg 0,01 Campus Radio German Nuernberg 0000-2400 daily 1485 ND Berlin 1 kaufradio German Berlin 0000-2400 Tests 1062 ND Paris 5 TDF French Meudon 0000-2400 Tests 26000 ND Neumarkt 0,01 Campus Radio German Dillberg 0100-0159 daily 6140 268 NE USA/Canada 70 Radio China English Sackville

0400-0459 daily 6010 285 0500-0600 Sat/Sun 15255 230

0600-1000 daily 21675 300 Europe 80 DW English Trincomalee 0600-2400 Tu-Su 6095 ND Europe 35 RTL various Junglinster 0800-1400 daily 15440 40 W & C Europe 80 DW English Sines

0800-1500 Tests 774 ND Czechia 2,5 Czech Radio Czech 0900-1100 Mon-Fri 17700 40 Europe 80 DW English Sines

0945-0959 daily 9850 ND Europe 40 FEBA English slow Flevo 0959-1200 daily 9850 ND Europe 40 RNW English Flevo 1000-1100 Mon 9760 110 W & C Europe 33 Christian V. English Rampisham 1000-1200 daily 6140 120 W & C Europe 40 DW English Juelich 1000-1500 daily 7320 62 NE & C Europe 33 BBCWS English Rampisham 1100-1155 Mon-Fri 17710 50 Europe 80 DW English Sines 1100-1200 Sat 9850 ND Europe 40 TDP Radio Music Mix Flevo 1100-1300 daily 21780 50 SW Europe 10 RNW English Bonaire 1100-1300 Sat/Sun 9410 62 NE & C Europe 33 BBCWS English Rampisham 1200-1257 daily 9850 ND Europe 40 RNW Dutch Flevo 1200-1300 daily 6140 120 W & C Europe 40 DW German Juelich 1200-1359 daily 9655 ND Europe 150 DW English Wertachtal 1300-1330 daily 9815 ND Europe 40 Radio Sweden German Flevo 1300-1500 Mon-Fri 9410 62 NE & C Europe 33 BBCWS English Rampisham 1305-1455 daily 5975 290 W Europe 40 T-Systems German Juelich 1330-1400 daily 9815 ND Europe 40 Radio Sweden English Flevo

1330-1400 Sun 9785 95 Europe 33

W & C No. America

NZ + SE Australia

biteXpress Campus Radio

70 BBCWS English Sackville 10 RNW English Bonaire

var. from NASB

German

English Rampisham

Erlangen

Hradec KrálovéStezery

DRM-R2 Manual

1400-1430 daily 9815 ND Europe 40 RCI English Flevo 1400-1500 daily 15780 240 W & C Europe 35 VoR Russian Taldom 1400-1559 daily 6130 ND Europe 150 DW German Wertachtal 1429-1500 daily 9815 ND Europe 40 RNW English Flevo 1500-1514 daily 9815 ND Europe 40 Vatican Radio German Flevo 1500-1600 daily 15780 240 W & C Europe 35 VoR English Taldom 1600-1700 daily 15780 240 W & C Europe 35 VoR German Taldom 1600-1729 daily 3995 ND Europe 150 DW German Wertachtal 1600-1800 daily 6140 ND Europe 40 DW English Juelich 1600-1915 daily 1296 96 Netherlands 70 BBCWS English Orfordness 1700-1800 daily 15780 240 W & C Europe 35 VoR French Taldom 1800-1900 daily 6140 ND Europe 40 DW German Juelich 1900-2000 daily 11925 61 Russia 33 BBC Russian Rampisham 2055-2130 daily 9800 268 NE USA/Canada 70 Vatican Radio English Sackville 2100-2155 daily 11730 50 Europe 10 RNW English Bonaire 2115-2400 daily 1296 96 Netherlands 70 BBCWS English Orfordness 2130-2200 daily 9800 268 NE USA/Canada 70 RNW English Sackville 2200-2300 daily 15530 320 N America West 10 RNW English Bonaire 2200-2300 daily 9800 268 NE USA/Canada 70 RCI English Sackville

2300-2330 daily 9800 268 NE USA/Canada 70 2330-2359 daily 9800 268 NE USA/Canada 70 Radio Sweden English Sackville

As of December 5, 2003 See

http://www.rnw.nl/realradio/html/drm_schedule.html

Deutsche Welle

English Sackville