Special features
* 0 ~ 30W adjustable power
* Dual microphone inputs Reverb
* External encoder input (for external SCA or RDS encoder)
* VSWR protection, and can set the start value of the standing wave protection.
* over-temperature protection, and can set the start value over temperature protection.
* controlled fan forced cooling system to ensure stability while the machine can also increase the working life of the fan.
* automatic volume control function. Input volume can be detected automatically adjusted, to ensure the best modulation.
* four commonly used function keys. Can be quickly set the parameters of the machine.
Parameters
* Power supply voltage: AC100V ~ 240V/50Hz/60Hz
* Working frequency: 87 ~ 108MHz (can be customized 76 ~ 92MHz)
* Frequency stabilization mode: PLL Frequency Synthesizer (PLL)
* Frequency Step: 0.1MHz
* Modulation: WFM
* RF power: 0 ~ 30W adjustable. Maximum 30W
* RF output impedance: 50Ω / Coaxial
* stray radiation: <-60db
* audio level: 15dbV
* Frequency response: 50 ~ 15KHz
* signal to noise ratio: 70db
* Separation: 40db
* ambient temperature: 0 ~ 45 ℃
If you have any question ,Please feel free to tell me :[email protected]
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FMUSER RDS-A RDS Encoder for
FM Transmitter with MPX SCA Input
Overview
FMUSER RDS-A Encoder is well suited for most regional, local, RSL, LPFM and other medium- and small-coverage radio stations which use Ethernet for dynamic RDS data distribution. Built-in Ethernet controller supports multiple TCP/UDP ports, internet functions and remote monitoring .
FMUSER RDS-A Encoder have Fully DSP concept and effective design ensures high reliability, excellent signal characteristics and gives the user many advanced features while maintaining low acquisition costs.
Features
l Fully dynamic FM broadcast RDS encoder with up to four independent communication ports
l USB connectivity for local settings and maintenance purposes
l Ethernet connectivity for linking with broadcast automation system
l Control interface based on ASCII commands and UECP protocol
l Supports internet functions and remote monitoring
l Text features include dynamic PS, parsing, scrolling, tagging, fixed messages, scheduling and HTTP reading
l Excellent compatibility with broadcast automation systems
l Control software includes powerful Windows GUI application
l Supports control from external PHP/ASP scripts
l Easy and fast set-up
l Excellent spectral purity, direct digital RDS signal synthesis; compliant with EN 50067 / EN 62106
l Two switchable program sets (with optional DSN and PSN setting)
l External TA and Program set switch
l Bypass relay, high reliability
l Switchable MPX loopthrough mode (Loop/Side)
l Internal real-time clock incl. backup battery
l No special 19 kHz input needed - pilot tone internally recovered from MPX signal using digital PLL
Frequency Question (FAQ)
1. What is Radio broadcast data system（RDS）
Radio Data System (RDS) is a standard for helping people insert some data information in a FM radio broadcasts station.
RDS transmitted including time, station identification and program information.
The standard began as a project of the European Broadcasting Union (EBU).
2. Why you need to build fm radio station with rds?
RDS provides a digital channel for ordinary FM radio stations, allowing the radio to provide users with more features, including the following illustrations:
The most important features is AF, TA, TP, it help FM radio station do more…
a) RDS Traffic Announcement (TA) :
The severing of the increased busy traffic, it is now interested in various countries in Africa to insert RDS signals when constructing a transmitting station, so as to realize the most economical broadcast of some traffic information by means of coverage of FM signals.
b) Traffic Program (TP):
With the TA and TP functions of RDS, RDS helps radio in-vehicle users to obtain traffic information faster, reduce congestion in the city, and increase the listening rate of the radio station.
c) Alternative Frequency(AF):
RDS AF help drivers automatic frequency switching between the Relay stations.
Inserting the RDS signal in the transmitter can also automatically switch between multiple different frequency broadcasts in the same program. The receiver automatically switches the substitute frequency AF by detecting the PI code in the RDS signal to ensure that multiple relay stations are passed. Broadcast stations that achieve nationwide coverage achieve seamless coverage and seamless listening. When the car passes the signal superposition zone between the two frequencies, the AF function of the RDS will automatically switch to the same program at different frequencies.
4. What is needed to build an RDS broadcast?
A: A RDS Fm radio transmitter equipment kit list:
1) FMUSER RDS-A encoder
2) FMUSER FSN-1000W Fm transmitter with 57khz
3) RDS encoding software
4) Cable and antenna
5. How can I build my rds channel on my Existing transmitter system?
1) Confirm whether the current transmitter already has a 57khz input interface.
2) Purchase FMUSER's RDS-A encoder to insert your digital signal into your radio broadcast.
3) Run the Rds software on your computer and insert your radio station logo, traffic information…
4) Use a RDS radio to check the digital information you provide.
6. Do I need to pay for your RDS software at an additional cost?
No, You just need to purchase FMUSER RDS-A encoder and FSN series transmitter, we provide RDS software for free.
8. What are the characteristics of the FMUSER RDS-A encoder, and what is the difference compared to innovonics RDS encoder?
Innovonics RDS encoder is a good products , The biggest difference should be the same function, and we offer more economical encoders.
Let’s look the the characteristics:
Technical Specifications
|
Parameter
|
Condition
|
Value
|
|
General
|
|
Supply voltage
|
|
12 V DC stabilized
|
|
Supply current
|
|
280 mA
|
|
Signal connectors
|
|
unbalanced BNC
|
|
Data connectors
|
|
1x USB (port 1), 1x Ethernet (port 2, 3, 4)
|
|
Network protocols supported
|
|
HTTP, SNTP, TCP, UDP, DHCP, DNS, SNMP
|
|
USB speed
|
|
software switchable 1200, 2400, 4800, 9600, 19200 bps
|
|
USB Mode
|
|
1 stop bit, 8 data bits, no parity, (no flow control),
ASCII or UECP (SPB 490)
|
|
TA switching
|
|
software or external switch
|
|
TA/EON1TA input
|
|
TTL with 10 kΩ pull-up, level or falling edge activated
|
|
Program sets
|
|
2
|
|
Program set switching
|
|
ASCII command, UECP command or external switch
|
|
Program switch input
|
|
TTL with 10 kΩ pull-up, level controlled
|
|
RDS Services supported
|
PI, PS, PTY, TP, AF, TA, DI, M/S, PIN, RT, RT+
TMC, EON, PTYN, ECC, LIC, TDC, IH, CT, ODA
|
|
RDS signal
|
|
Subcarrier frequency
|
|
57 kHz
|
|
Bandwidth
|
|
± 2.4 kHz (50 dBc)
|
|
Output level adjust
|
|
0.0 to 4.0 V p-p in 256 steps
|
|
Phase shift adjust
|
stereo transmission
|
Full range, in 9.5 deg. steps
|
|
Audio/MPX/Pilot input
|
|
Recommended load impedance
|
mono
|
< 10 kΩ
|
|
stereo MPX
|
< 2 kΩ
|
|
Recommended MPX voltage
|
|
1.3 - 8.0 V p-p
|
|
Passthrough voltage gain
|
2 Hz - 100 kHz
|
1 (0 dB)
|
|
Pilot tone level
|
|
min. 120 mV p-p
|
|
- recommended FM deviation
|
|
6.8 kHz
|
|
Pilot PLL capture range
|
|
8 Hz
|
|
Stereo encoder pilot frequency required
|
stereo transmission
|
19000 Hz ± 2 Hz
|
|
Output
|
|
Output impedance
|
|
100 Ω
|
|
Recommended load impedance
|
|
> 70 Ω, < 1 nF, no DC offset
|
|
Max. output voltage (RDS + MPX)
|
|
9.0 V p-p
|
|
Recommended RDS level
|
|
3 - 11 % of MPX
|
Appearance and Illustration
|
Number
|
Name
|
Explain
|
|
1
|
12V DC
|
Power supply connector. See section 3.3 for details.
|
|
2
|
Ethernet
|
Ethernet RJ-45 connector.
Use a standard (direct) cat 5 Ethernet cable for connection to the Ethernet switch, router or wall-socket.
The Ethernet control includes internal website (referenced as “Port 2”) and two independent user configurable general purpose ports (referenced as “Port 3” and “Port 4”) designated for remote control via TCP or UDP protocol.
The encoder operates also with no cable connected.
|
|
3
|
USB
|
USB standard B type connector. This port is referenced as “Port 1”.
Use the USB for initial setup of the encoder or for its local control.
The encoder operates also with no cable connected.
|
|
4
|
Output BNC
|
RDS signal output to transmitter, modulated at 57 kHz subcarrier.
If the Loop/Side switch is set to the LOOP position, the Output is a sum of the RDS signal and the signal fed to the Input BNC connector.
|
|
5
|
Input BNC
|
Optional input for synchronization to the pilot tone or for mixing the RDS signal with existing modulation signal.
|
|
6
|
Loop/SIDE
|
Allows the input signal to be added to the output signal.
|
|
7
|
GPIO
|
Optional logical inputs for direct control of some RDS services (TA, PROGRAM).
The connector is a standard 6-pin PS/2 type.
|
Packing List
1pc FMUSER 30W 1U FM Transmitter
1pc FMUSER RDS-A Encoder
1pc FMUSER DP100 Dipole Antenna
1pc 15meters -5 coaxial cable with connectors
1pc USB Cable
2pcs BNC Cable
1pc 12V 2A Power supply
