EMCEE Broadcast MBSR100MW Repeater User Manual

EMCEE Broadcast Products Repeater Users Manual

Users Manual

Installation Instructions MBSR100MW MBS Repeater U.S Patent #4,791,717, #5,020,149 READ ME FIRST! The EMCEE MBSR100MW is a professional solid state low-power MBS Band retransmission repeater (amplifier) system, and is formed from a combination of a pre-selected frequency input pre-amplifier module (P/N 701007) and an AGC controlled 100mW post amplifier module (P/N 50800002A), each of which is in a separate chassis/housing and connected via an interconnecting coaxial cable with Type ‘N’ connectors. The system is capable of retransmitting from one to seven MBS channels with either analog NTSC or digital modulation. The system provides an end-to-end electrical gain typically 70dB. The system has no frequency generating circuits, and as such, the output carrier frequencies and modulations are dependent on the inputs. The pre-amplifier contains a dual section inter-digital filter system which provides high Q MBS pass-band circuitry at the input stage. This is to prevent pre-amplifier input overloads due to out of band interference from close stations utilizing the LBS and UBS bands. The input pre-selection also prevents the retransmission of out of band signals. The output (post) amplifier has an output AGC range of 20dB, with a 20dBm average power output power threshold. The AGC circuitry is designed to provide a constant low distortion output with varying input signal power levels due to fades and other signal anomalies. The system has the following average output power capability: 1 Channel @ 20dBm/Channel ±1dB (20dBm Composite Power) 2 Channels @ 17dBm/Channel ±1dB (20dBm Composite Power) 4 Channels @ 14dBm/Channel ±1dB (20dBm Composite Power) 7 Channels @ 11dBm/Channel ±1dB (20dBm Composite Power) Warning: DO NOT EXCEED 20dBm Composite Power Output! PLANNING the INSTALLATION Proper installation pre-planning will yield the best performance of the installed system. DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines.
EMCEE MBSR100MW Installation Instructions Page 2 DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines. ©2007 EMCEE Communications Field deployment and configuration of the system includes fitting the system with the appropriate receive and re-transmit antennas. Typically, narrow beam parabolic reflectors are used to provide the necessary input/output link budget and output coverage area. The system, fully into the AGC range, has a maximum input power level of -35 dBm and is labeled “DO NOT EXCEED -35 dBm Input” accordingly. A typical installation will have input link characteristics as follows: Base Station EIRP (maximum) 60.0 dBm 10 Mile Path Loss -124.9 dB Receive Antenna Gain (typical) 24.0 dBi System Input Level - 40.9 dBm System Gain 70.0 dB Inter-Connecting Cable Loss -3.0 dB Transmit Antenna Gain (typical) 24.0 dBi EIRP 50.1 dBm Using a spectrum analyzer in the channel power mode, measure the RF output power level from the prospective receive antenna and confirm that the input power level is between -35 and -47dBm. If necessary, use a larger or smaller antenna to adjust the input level accordingly. As an alternate method, if the receive antenna output level is too high, a 50 Ohm, type ‘N’ attenuator may be used. Note: DO NOT use attenuators between the pre-amp and post-amp sections of the system. The repeater system has ~70dB of electrical gain plus the gain of the receive and transmit antennas. It is important that the transmit and receive antenna installation provides a high degree of isolation (at least 100dB) between them so the system does not oscillate due to feedback. This can be accomplished through vertical separation and cross-polarization of the antennas (50 feet recommended), providing input to output shielding by using building blockage or other means, while using good field engineering and installation practices. Install the pre-amplifier module as close as possible to the receive antenna to minimize the noise figure of the system. Also install the post-amp module as close as possible to the transmit antenna. Utilize a premium low-loss cable with quality connectors between the pre-amp and post-amp modules for the best performance results.
EMCEE MBSR100MW Installation Instructions Page 3 DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines. ©2007 EMCEE Communications Choose a transmit antenna that will provide the best coverage pattern for the shadowed area to be served. SERVICING the SYSTEM There are no internal user adjustments or user serviceable parts inside the unit. Do not disassemble the unit; the Warranty will be void if the unit is opened. If either module does not properly function, return it to the factory for repair or replacement. UNPACKING the SYSTEM Remove the power supply, then insert a finger into the finger hole of the inner carton liner, lift to expose unit and accessories. Remove the “L-Screw” from the mounting bracket and replace the bracket as shown. Install the power supply indoors close to an available AC outlet. Use a good quality RG-6 cable (min.) to connect the power supply between module power input and the power inserter. ATTACHING MODULES to the ANTENNA MAST Mount the modules with the connectors facing down. Slide the mounting clamp into the indentations on the housing and up into place. Hand-Tighten the “L-Screw” to secure the module to the antenna mast or tower leg. DO NOT use a wrench or pliers to tighten the “L-Screw”. Mast or tower leg size can be 1” to 2-1/2”. CONNECTING THE MODULES Connect the antenna output connector to the RF Input ‘N’ connector on the pre-amp module. Connect the RF inter-connecting cable ‘N’ connector to the ‘N’ jack marked RF output. Connect the RF inter-connecting cable ‘N’ connector to the RF input connector of the post-amp module.
EMCEE MBSR100MW Installation Instructions Page 4 DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines. ©2007 EMCEE Communications Hand-Tighten all connectors! DO NOT use a wrench or pliers on any of the connectors. Use only good quality solid conductor cables and self-sealing connectors. Connectors may be weather-proofed if desired. POWERING the SYSTEM Using the diagram below, select the system powering option most suitable to the installation. For Further Technical Information Contact: EMCEE Communications 1635 W. 12 Place Tempe, AZ 85281 USA Tel. 480-315-1661 Fax 480-315-0679 www.emceecom.com
EMCEE MBSR100MW Installation Instructions Page 5 DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines. ©2007 EMCEE Communications MBS-BAND LOW NOISE PREAMPLIFIER-Design Specifications EMCEE Part Number 701007 Input Frequency 2572-2614 MHz Noise Figure 4.5 dB Typical Gain 35 dB ±2 dB Gain Flatness ±1.5 dB P-out-1dB Compression Point +12/+5 dBm (single carrier) Output 3rd Order Intercept Point +21/+14 dBm Input VSWR 1.5:1 Output VSWR 1.5:1 Input Connector 50 Ohm, Type ‘N’ Female Output Connector 50 Ohm, Type ‘N’ Female DC Supply Voltage +16 to 24 VDC Current 60ma Typical Power Supply Connector Type ‘F’ Female or Thru Output Connector Temperature Limits: Operating -40°C to +50°C Storage -50°C to +85°C Weatherproofing Tongue and Groove Case with Full Gasket Leak Testing Per CWT DT-2005.1 Finish Polyester Powder Coat Paint Physical Dimensions: Size 10.0”x 4.75“x2.0 in (254x120x50 mm) Weight 2.5 lbs. (1.18 Kg)
EMCEE MBSR100MW Installation Instructions Page 6 DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines. ©2007 EMCEE Communications MBS-BAND LOW-POWER REPEATER AMPLIFIER-Design Specifications EMCEE Part Number 50800002A Input Frequency 2572-2614 MHz Noise Figure 1.2 dB Typical (At AGC Threshold) Open Loop Gain 35 dB ±2 dB Gain Flatness ±1.0 dB Gain over Temperature ±1.0 dB AGC Dynamic Range 20dB Typical Output Power (6MHz Channel) +20dBm per Channel (1 Channel) +17dBm per Channel (2 Channels) +14dBm per Channel (4 Channels) +11dBm per Channel (7 Channels) Input VSWR 1.5:1 Output VSWR 1.5:1 Input Connector 50 Ohm, Type ‘N’ Female Output Connector 50 Ohm, Type ‘N’ Female DC Supply Voltage +16 to 28 VDC Current 550ma Typical @ 16VDC Input Power Supply Connector Type ‘F’ Female or Thru Input Connector Temperature Limits: Operating -40°C to +50°C Storage -50°C to +85°C Weatherproofing Tongue and Groove Case with Full Gasket Leak Testing Per CWT DT-2005.1 Finish Polyester Powder Coat Paint Physical Dimensions: Size 10.0”x 4.75“x2.0 in (254x120x50 mm) Weight 2.6 lbs. (1.19 Kg)
EMCEE MBSR100MW Installation Instructions Page 7 DANGER WATCH FORWIRESYou can be KILLED!If this product comes near electric power lines. ©2007 EMCEE Communications

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