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RDS generator
RDE 11
Radio Data System Encoder This top level apparatus can be easely coupled with almost any stereoencoder and transmitter. Hereunder the most significant specifications: excellent spectral purity, internal synchronization with 19kHz stereo pilot tone either externally supplied or recovered by the multiplex signal, phase adjustable at 0 or 90°, 2 pages switchable and PC programmable message, internal clock, software included. The system fulfills the various requirements needed by systems for the transmission of additional data on radio programs, namely: compatibility with the main program, mono and stereo; absense of interference on adjacent FM channels; potentially better coverage area compared to mono transmissions; compatible with other identification system, already in service.
It can be used either with the internal multiplex mixer or applied to the RDS or AUX input of a stereo transmitter or encoder, provided with. In both cases stereo separation in excess of 70dB and S/N ratio >80dB are still possible, due to its unusually high quality.
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| Coding |
Differential or biphase |
| Modulation |
DSB with suppressed carrier |
| Frequency |
57 KHz |
| Bandwidth |
+/- 2,4 KHz |
| Phase |
0 / 90° |
| RDS signal output level |
0 - 700 mVpp |
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| 19 KHz INPUT |
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| Impedance |
> 100 Kohm |
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| MPX INPUT |
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| Impedance |
10 Kohm |
| Connector |
BNC |
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| MPX + RDS OUTPUT |
unbalanced, AC coupled |
| Output impedance |
47 ohm |
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| SYNCHRONIZATION |
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| Serial interface |
RS232-C, asynchronous |
| Data input |
Full duplex |
| Format |
Fixed 11 bits None, 8, 2 |
| Transmission speed |
selectable 2400 - 19200 baud |
| Connector |
25 pin subminiature cannon female |
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| GENERAL DATA |
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| Power supply |
110 - 220 VAC 50/60 Hz |
| Power consumption |
12 VA |
| Dimensions |
48,3 x 24 x 4,4 cm - 19" 1 unit rack |
| Weight |
2,8 Kg |
| Operation temperature |
0 - 50°C |
RDS programs transmitted |
PI (Program Identifier) |
EON (Enhanced Other Network) |
PS (Program Service Name) |
FT (Fast Tuning) |
TP (Traffic Program) |
LIC (Language Identifier) |
TA (Traffic Announcement) |
PTYN (Program Type Name) |
AF (Alternative Frequency) |
ECC (Extended Country Code) |
PTY (Program Type) |
LI (Linkage Identifier) |
RT (Radiotext) |
TMC (Traffic Message Channel) |
CT (Clock Timer) |
PIN (Program Item Number) |
M/S (Music-Speech) |
TDC (Transparant Data Channel) |
DI (Decoder Identifier) |
IH (In House Application) |
All the broadcasters data are stored in the RDE11 memory via a PC program. Programming via satellite is a remarkable, novel feature, which make RDE11 unique.
All the local RDS data are programmed via the transmitting satellite's (uplink) serial port. Data can be programmed separately, one by one, by connecting serial port to the satellite receiver (down link). |
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