BZ5T5000U5000 Watt UHF Transmitter

Unit 1 – Introduction - 11 - 2. General Technical Descriptive: 2.1. IF Modulator (for transmitter): This is the input module. It is a professional audio and video modulator. The audio and video signals are applied to their respective input for the modulation process in IF (41 to 47 MHz]. The audio and video input impedances are 600 balanced Ohms and 75 unbalanced Ohms, respectively. 2.1.1. Video processing: The video signal passes through linearity correction circuits and then is applied to the 45.75 MHz video modulator. There are Synchronizing Separation circuits that generate the auxiliary outputs to “Automatic Circuits”. The video signal is also applied to a group delay predistortion circuit. 2.1.2. Audio processing: The Mono-audio signal or stereo base band is applied to the module and modulates a 41.25 MHz audio carrier. 2.1.3 Module output: Both carriers, audio and video modulated (41.25 and 45.75 MHz), are applied to the “Vestigial Side Band Filter” (SAW Filter). At the output there is a circuit to control the IF output level. 2.2. UHF UP Converter: 2.2.1. Introduction: This module converts an IF frequency signal into an UHF band channel, keeping its characteristics and the same bandwidth. 2.2.2. IF filter and AGC amplifier (for transposer): The IF amplifier and filter module establishes the adequate bandwidth for the input signal and supply the gain in this signal, keeping the level constant through an AGC loop. 2.2.3. Technical Descriptive: The 2 nd UHF converter has an oscillator controlled by PLL (Phase Locked Loop Integrated Circuit), which frequency is selected through the DIP switch from the Oscillator control board. When the modulated signal in IF is received in the 2 nd converter, it is filtered and applied to a mixer. The result of this mixing is filtered (channel filter) and supplied to the following modules of the equipment, in the selected channel. Unit 1 – Introduction - 12 - 2.3. Amplifier Levels: 2.3.1. Comment/Composition/Origin: The RTU5000T is composed for eight 625W amplifier modules combined through 3dB hybrid couplers. The final modules are drived by an 100W amplifier and 3 dB hibrid couplers as splitters. All the amplifiers are in solid state. 2.3.2. Protections/Signaling: Each 625W amplifier has a VSWR protection, temperature and a power limiting circuit. The output power, VSWR, temperature, current and module voltage can be monitored through a DB9 connector in the front panel. In the frontal panel there are the normal power indication (Green Led), low power (red led) and excessive VSWR (red led). There is, also, a BNC connector for monitoring the output signal of each module. At the transmitter output, there is the video and audio power monitoring, antenna VSWR, power supply antenna, current and voltage and indications of excessive VSWR, excessive filter VSWR, power supply temperature alarm, video absence, phase fail and others. There is at the transmitter top, a DB25 connector with transmitter signals, for remote monitoring. 2.4. Notch filter: It is used to attenuate out channel spurious generated by the transmitter. It is composed by 11 cavities, 10 are syntonized in the spurious frequencies and 1 in the 2 nd harmonic. Unit 1 – Introduction - 14 - 4. Block Diagram: Unit 4 – UHF 100W Amplifier - 2 - 1. UHF 100W Amplifier: 1.1. Introduction: This module amplifies the signal that comes from the channel converter, to the 100 W level, maintaining its characteristics and the same bandwidth. 1.2. +32V 14A switched power supply: Its function is to supply the 2 W and 100W modules and also the protection circuits that compose the unit. It is necessary a 220VCA transformer with 35V 15 A output to supply it. Its efficiency is about η = 80%. 1.3. 100W Amplifier protections: For these functions, we have: VSWR Circuit: it protects the amplifier module transistors, when the output stationary wave is superior to 4%. This circuit acts in the output transistors gate. Temperature Circuit: it acts in the output transistors gate when the heat sink temperature is above 56°C. Over voltage Circuit: this circuit avoids that voltages upper than 32V supply the amplifier modules. When this circuit starts operating the 15 A F1 and F2 fuses damage. 1.4. Power detecting and power limiting protection: This detector function is to transform a RF signal sample in voltage DC. This voltage, that is proportional to the RF signal, reaches the power limitig circuit to protect the amplifier modules. 1.5. Amplifier stages: 2 W and 100W amplifier modules are used. For this amplifier stages, we use 1 transistor MRF373A for 2W and 4 transistors MRF 373A for 100W. Its gain is about 50 dB in class AB. Unit 4 – UHF 100W Amplifier - 3 - 2. Frontal and back panel: 2.1. Frontal Panel: Each element in the panel has the following function: 1. Circuit Breaker: Protection circuit breaker 7 A. 2. Monitor: Connector (BCN) is used to monitoring the RF output signal in the spectrum analizer. 3. Meter: it allows visualizing +32V measurements, current, forward power and VSWR, according the selector switch position. 4. Selector switch: according to the switch position, the values are indicated in the meter. 5. Temperature Led alarm: When the led lights, it indicates an over temperature. 6. VSWR Led alarm: When the led lights, it indicates an exceeding VSWR. 7. Air input: there is a fan inside it, which cools the final amplifier heat sink. Unit 4 – UHF 100W Amplifier - 4 - 2.2. Back Panel: Each element in the panel has the following function: 1. RF OUT: RF signal output by via connector N. 2. AIR OUT: The air enters through the frontal panel, cools the heat sink and the hot air leaves by the back panel. 3. RF IN: RF signal input by connector N. 4. MAIN AC 220V: main AC power supply 220V. Unit 4 – UHF 100W Amplifier - 5 - 3. Switched power supply +32V 14A: 3.1. Function The function of this is to provide 32Vdc with 14 A to the 100W amplifier module. 3.2. Technical characteristics: Input voltage: _____________________…

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Unit 2 – IF Modulator - 2 - 1. Audio and Video Modulator: 1.1. Function: This module function is to generate two carriers: one in 45.75 MHz and the other in 41.25 MHz. The first is modulated in AM-VSB by a video signal and the other one is modulated in frequency by an audio signal. 1.2. Block Diagram: 1.3. Technical Description: 1.3.1. Video Modulator: The transistor Q1 oscillates in the crystal frequency (45.75 MHz - IF video), and the transistor Q2, with high input impedance, guarantees the isolation to the oscillator Q1 output. The frequency accuracy is adjusted in the variable inductor L1. The input video signal, with adjustable level in R27 (front panel), is applied to the high impedance input push-pull amplifier formed by transistors Q6 and Q9. The amplifier output signal modulates in amplitude, in the mixer M1, the video carrier. The integrated circuits IC18 to IC21 form a group delay predistortion circuit. The syntonized cells, at the video bandwidth, cause an advancement of 170 ns at 3.58MHz. This video pre-distortion is inserted in the circuit through jump’s JP5 and JP6. The adjustable attenuator R146 allows equalizing the video level when the pre-corrector circuit is turned off. The transistor Q12 receives the video signal, invertes its phase and applies it to the IC7 amplifier. This amplifier causes a non-linear enlargement to the video signal emphasizing the synchronizing pulses. This signal is clamped in 0.7V by the D5 and is compared to 0.3V (due to diode D4) in the comparator circuit IC6. In this manner, at the IC6 output, there will be only synchronizing pulses. These pulses are applied to the IC5 (mono-stable) in the negative transition to generate clamping pulses. The clamping pulses commute the transistor Q10 that switches the video signal clamping it to the blanking level through R45. This adjustment allows choosing the point of modulation in the mixer for a better linearity. If there is lack of clamping pulses, the Q11 transistor commutes, allowing adjusting through R44 the level of the video carrier without modulation. The integrated circuit IC9B receives the clamping signal detected through D7, changes its state and commutes the transistor Q13. It allows switching the external circuits connected to the Automatic output. The led in the panel shows this operation, when it is green it indicates video on. This circuit presents about 60 seconds delay time approximately. Unit 2 – IF Modulator - 3 - The video signal peak is detected through IC8 and through IC9 and it is differentiated with the level adjusted through R45, in order to extract the dc component. The IC9A output has a dc level related to the video signal not taking into account the synchronizing pulses. The 100% video measurement is adjusted through R72 in the meter with a video signal with 100% APL. The C118 e L18 components form an ICPM corrector circuit that allows correcting a non-desirable phase-shift at the video carrier caused by the modulating signal. The modulated video carrier is amplified by IC1 and the SAW filter FL1 filters this signal giving the final characteristics of the desired modulation, i.e., AM_VSB (amplitude modulation with vestigial side band). The amplifiers IC2, IC3 and IC4 produce the necessary gain to signal, in order to compensate the losses in SAW filter and deliver a 0 dBm output level. The output signal level is adjustable by R12 (front panel), which controls the PIN diode conduction (D1). The trimpot R13 limits the maximum IF output level and the circuit formed by transistor Q19 and capacitor C120 increases slowly the output level to eliminate high frequency peaks when the equipment is turned on. The IF signal, after amplification, passes through a low-pass filter, formed by L6, L7, C21, C22 and C23 to eliminate harmonic signals. Part of this signal is sent to the detector circuit formed by transistors Q3 and Q4 to measure the IF signal in the panel. The trimpot R24 allows adjusting the reading level through the meter. 1.3.2. Audio Modulator: The transistor Q14 and associated components generate the audio carrier. The applied voltage to the varicap diode D10 controls its frequency. The amplifiers IC12 and IC13 increase the signal level and through the trimpot R108 is applied to the IF amplifier to be delivered at the output. A sample of this signal is delivered to the “prescaler” IC14 through R108. It divides the signal into 64 and delivers it to PLL (integrated IC15). The PLL divides again this signal, now into 66, and compares it with a reference signal in phase, resulting a voltage proportional to the difference of the phase between the signals; this voltage is filtered and applied to diode D10 to correct the frequency. The reference frequency for PLL is generated at the integrated circuit itself that oscillates at 10 MHz and divides it into 1024. The oscillator crystal is found in a thermal chamber, which is controlled by Q15 and by thermistor NT1, for better frequency stability. The trimmer C90 allows the fine adjustment of this carrier frequency (41.25 MHz). If the circuit cannot correct the frequency, the transistors Q17 and Q18 are commuted to turn on the frequency error red led. The audio signal that will cause the modulation in frequency in this carrier may come from the mono audio input or stereo audio input. It is possible to select it through jump JP3. The mono audio input circuit has an unbalanced amplifier IC10 and pre-emphasis circuit. It is possible to turn off the pre-emphasis through jump JP2. The trimpot R92 (front panel) adjusts the audio level that will cause the correct modulation index. The integrated circuit IC17 and associated components form a peak detector of audio signal and a trimpot R117 allows adjusting 100% at the meter for the correct deviation. The battery input (+36V) through D16 and fuse F1 connects through connector CN2 the power supply FTE017 (optional). Obs: The circuit diagram is divided into four parts. Unit 2 – IF Modulator - 8 - 4. F…

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BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Exterior Photo

BZ5T5000U Application for FCC Certification Modulator Input 5000 Watt UHF Translator Operational Description This application requests authorization for a video/audio input driven 5000 Watt translator, BZ5T5000U. The translator is driven directly by a color demodulator. The intended use of the T5000U is to rebroadcast a television relay station or other legal source of video and audio. The T5000U is a solid state translator designed to operate a 5000W sync peak visual RF power and 500W average aural single carried RF power. The T5000U is self contained in a single cabinet with internal cooling fans. The simplicity of design, the employment of modular subassemblies and the use of standard components also enhance serviceability. The specific unit tested for this application was on channel 25. The modulator section of this translator will accept video from the television relay station, frequency spacing, deviation and other characteristics including distortion are therefore determined for the most part by the originating television station. It is anticipated that the translator will be driven directly by the demodulator output of an FM microwave repeater. No provision is made for tampering with or adjustment of the composite video or audio signal except for the depth of video and audio modulation. The T5000U meets all requirements for unattended operation. A description of the automatic shutdown and control circuitry can be found in the user’s manual. Station identification requirements will be supplied by the originating station. Wiring, shielding and construction are in accordance with accepted principles of good engineering practice. The translator’s construction is such that all hazardous components are enclosed or protected against accidental contact by operating personnel.

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Active Devices and Function List / Tuneup Procedure Modulator INTEGRATED CIRCUIT LF351N IC7 INTEGRATED CIRCUIT CD4047AE IC5 INTEGRATED CIRCUIT LM311P IC6, IC8 INTEGRATED CIRCUIT LM358 IC9, IC17 INTEGRATED CIRCUIT TL072CDP IC1 INTEGRATED CIRCUIT MC145106P IC15 TRANSISTOR 2N2369A Q1,Q2,Q3,Q4 TRANSISTOR TIP30A Q15 VOLTAGE REGULATOR UA78L08 IC11,IC16 TRANSISTOR 2N3904 Q5,Q9,Q12, Q13,Q16,Q18, Q19 TRANSISTOR 2N3906 Q6,Q8,Q17 TRANSISTOR BF245C Q10,Q11 INTEGRATED CIRCUIT MAR6 IC2 INTEGRATED CIRCUIT MAR3 IC1,IC3,IC4, IC12,IC13 INTEGRATED CIRCUIT NE5539N IC18,IC19,IC20,IC21 INTEGRATED CIRCUIT NC12022P IC17 TRANSISTOR BFR90/BFR91A Q14 TRANSISTOR 2N5566 Q7 Channel UP Converter INTEGRATED CIRCUIT 1458 IC5 TRANSISTOR BC546A Q1,Q2,Q3 TRANSISTOR MPS918 Q4 INTEGRATED CIRCUIT MAR-6 IC3 INTEGRATED CIRCUIT MAR-7 IC1,IC2 INTEGRATED CIRCUIT MAR-3 IC4 TRANSISTOR 2N3866 Q2,Q3,Q5,Q8 TRANSISTOR 2N5179 Q1 INTEGRATED CIRCUIT MAV11 IC1 TRANSISTOR BFR90/BFR91 Q4,Q6,Q7,Q9,Q10 INTEGRATED CIRCUIT 1458 IC1 INTEGRATED CIRCUIT LM358 IC5 TRANSISTOR BC556A Q3 TRANSISTOR BC640 Q1 TRANSISTOR UA78L08ACP IC4 INTEGRATED CIRCUIT MAR6 IC3 INTEGRATED CIRCUIT MAR3 IC1 INTEGRATED CIRCUIT MAV11 IC2 INTEGRATED CIRCUIT MC12022AP IC7 INTEGRATED CIRCUIT MC145152P2 IC6 TRANSISTOR BFR90/BFR91A Q2 TRANSISTOR MC78L05ACZ IC8 UHF 100W Amplifier INTEGRATED CIRCUIT TL494CN IC1 TRANSISTOR BC547A Q3 TRANSISTOR BC556A Q4 TRANSISTOR BC639 Q1 TRANSISTOR BC640 Q2 TRANSISTOR IRF150 Q5,Q6 INTEGRATED CIRCUIT LM358 IC3,IC4,IC5 TRANSISTOR BC547A Q1 VOLTAGE REGULATOR 7812 IC1 INTEGRATED CIRCUIT MC3423 IC2 UHF 625W Amplifier INTEGRATED CIRCUIT LM358 IC2 INTEGRATED CIRCUIT TL494CN IC1 INTEGRATED CIRCUIT LM78L12ACZ IC3 TRANSISTOR BC639 Q1 TRANSISTOR BC640 Q2 INTEGRATE CIRCUIT LM358 IC2,IC3,IC4,IC5 TRANSISTOR BC547A Q1 FIXED VOLTAGE REGULATOR 7812 IC1 TRANSISTOR LDMOS MRF373A Q1,Q2,Q3,Q4 METERING AND CONTROL INTEGRATED CIRCUIT CD4013AE IC11,IC12,IC14 INTEGRATED CIRCUIT CD4047AE IC7,IC8 INTEGRATED CIRCUIT MOC3060 IC16 INTEGRATED CIRCUIT LM358 IC3,IC4,IC13 TRANSISTOR BC337 Q1,Q3,Q5,Q6,Q7 VOLTAGE REGULATOR 7812 IC15 INTEGRATED CIRC. 1458 IC2 INTEGRATED CIRC. LM311P IC1,IC3 TRANSISTOR 2N2369A Q2 TRANSISTOR BF245C Q1 INTEGRATED CIRC. ICL7662CPA IC4,IC5 INTEGRATED CIRC. OPA603AP IC6 T5000U 1.INSTALLATION: 1.1. Unpacking All the equipment is carefully inspected and tested under the company quality control. Any irregularity must be filed immediately with the carrier responsible for the transportation equipment. Any doubts, contact your RF TELECOMUNICATIONS representative before installing the equipment so that your doubt do not become a problem. 1.2. Repacking and Transportation If it is necessary the equipment be sent back to the company or any distant place, some precaution must be considered: • Wrap the equipment with air bubble plastic. Do not let any part of the equipment exposed to protect it against any damage to the equipment painting; • Wrap the equipment with cardboard and wood pack it to protect against any impact; • Ensure that anything was left loose inside the package. Put the package stood to avoid any impact. 1.3. Installation Requirement • Installation Site: The equipment should not be installed in places that exceeds 2000 meters of altitude; have a proper air conditioning system (if it is necessary), voltage regulator, ventilation air conducting; ensure that sufficient space around the equipment is available to permit easy access, and to enhance future ease of maintenance. It is recommended a minimum 0.5m of clearance both right and left sides, and 1.0m both front and rear of the equipment; the ceiling should have at least 3.0m of height where the blower exhaust will be installed. The place must be free of dirt, humidity and dust. • Installation Surface: For small equipment, it is recommended being installed on a table or a standard rack 19”, which it should have at least 0.3m of clearance from the wall in order to have a proper ventilation. • Power board: It is necessary a power board to organize, separate, and distribute the power supply and mainly for equipment protection. The power board is connected to the power line. Thermomagnetic disjunctor must be used in order to feed isolatedly the equipment, illumination, air conditional, blower exhaust, etc. • Voltage Regulator: A voltage regulator is used for protection against any variation and transient coming from the power line so that it will provide a better performance of your equipment. The regulator should provide at least 30% more power than the equipment consumes. It is recommended using an electronic kind regulator, microprocessed, with a perfect senoidal output, and an isolator transformer for the entrance. • Grounding: All the equipments must be connected to the main station ground system but isolated from the wall, protecting it against electrostatic discharges, lightning strikes, etc. Grounding should be 5 Ohms maximum to have an adequate protection. Ensure that the following items are connected to the main ground system: 9 Tower base; 9 Lightning rod; 9 Neutral wire; 9 Power supply ground; 9 All the equipment grounds such as power board, voltage regulator, etc; 9 Broadcast Antennas, coaxial cable and transmission line. If you have any doubts about the station ground system quality, a specialized company should be contacted. • Lightning Rod: Its use on the tower is vital and a distance of 2.0m between the last antenna and the lightning rod should be preserved. • Ambient Temperature: the ambient temperature must not exceed 25°. If it is not possible, the use of an air conditioning system should be considered. The air conditioning system should be able to keep the ambient temperature 25° maximum with full power operation of the equipment. The blower exhaust must also be installed in order to reduce the ambient temperature at the same time the power consuming of the air conditioning system reduces. • Humidity: …

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Unit 4 – UHF 100W Amplifier - 6 - 3.4. Circuit Diagram FTE006: Unit 4 – UHF 100W Amplifier - 11 - 4.3. Circuit Diagram PRT005: Unit 4 – UHF 100W Amplifier - 17 - 6.4. Circuit Diagram APU010: Unit 4 – UHF 100W Amplifier - 20 - 7.4. Circuit Diagram APU006: Unit 5 – UHF 625W Amplifier - 6 - 3.4. Circuit Diagram FTE022: Unit 5 – UHF 625W Amplifier - 10 - 4.3. Circuit Diagram PRT010: Unit 5 – UHF 625W Amplifier - 16 - 6.4. Circuit Diagram APU006: Unit 6 – Cabling and attributes - 3 - 1.3. Circuit Diagram PRT011: Unit 6 – Cabling and attributes - 12 - 4.4. Circuit Diagram MTV001: Unit 6 – Cabling and attributes - 17 - 5.3. Circuit Diagram PNT004: Unit 6 – Cabling and attributes - 26 - 8. Command and Protection board:

Unit 2 – IF Modulator - 10 - 5. Circuit Diagram MAV001: 5.1. Circuit Diagram first part: Unit 2 – IF Modulator - 11 - 5.2 Circuit Diagram second part: Unit 2 – IF Modulator - 12 - 5.3. Circuit Diagram third part: Unit 2 – IF Modulator - 13 - 5.4. Circuit Diagram fourth part: Unit 3 – Channel UP Converter - 8 - 3.5. Circuit diagram APF001: Unit 3 – Channel UP Converter - 13 - 4.5. Circuit diagram PCF002: Unit 3 – Channel UP Converter - 18 - 5.4. Circuit Diagram CAP001: Unit 3 – Channel UP Converter - 22 - 6.6. Circuit diagram CNU001: Unit 3 – Channel UP Converter - 31 - 8.3. Circuit diagram FTE023:

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Spurious Emissions BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Spurious Emissions

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Cabinet Radiation BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Cabinet Radiation

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Frequency Drift versus Temperature. READINGS CALCULATION LOCAL OSC'R FREQ (MHZ) DEVIATION FROM REF TEMP (DEG C) VAC= 187 220 253 (MHz) (%) 20 (REF) 583.002471583.002452583.0024730.000021 0.000004 -30 582.997933582.997915582.9979380.004537 0.000778 -20 583.001381583.001386583.0013790.001073 0.000184 -10 583.003137583.003133583.0031360.000685 0.000117 0 583.003471583.003470583.0034710.001019 0.000175 10 583.002912583.002907583.0029140.000462 0.000079 20 583.002349583.002345583.0023480.000107 0.000018 30 583.001084583.001083583.0010830.001369 0.000235 40 582.999936582.999948582.9999410.002516 0.000432 50 582.999235582.999279582.9992580.003217 0.000552 60 582.999036582.999035582.9990380.003417 0.000586 Test Setup Block Diagram Test Equipment List: Frequency Counter – Hewlett Packard HP5385A S/N 3242A07335 Thermostatically Controlled Temperature Chamber – Cincinnati Sub-Zero

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Audio Frequency Response Tabulated below are the audio frequency response measurements and distortion characteristics. Frequency Amplitude (dB) Distortion (%) 50 -0.9 0.25 100 -1.1 0.1 400 -1 0.07 1000 -0.5 0.01 2000 1.5 0.01 5000 7.8 0.05 10000 13.3 0.05 15000 16.23 0.1 The frequency response data is graphed on the following page. One can see that it follows the 75μS pre-emphasis characteristics. BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Audio Frequency Response

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Power Measurements The translator’s visual power meter circuit uses a detected sample from a directional coupler on the output. A peak detector provides the DC level to drive the translator’s output level meter. The aural level is metered by using a ceramic filter at baseband to filter the 4.5MHz component, then rectify to a DC level to drive the metering circuit. The translator was modulated with a sync and blanking signal only and the power output adjusted to 2980 W average, corresponding to a peak envelope sync power of 5000 W. The translator is capable of compliance with the specification for the range 500 W to 5000 W and is capable of delivering rated power output at 10% above or below rated AC input voltage. The aural carrier output power was measured unmodulated into the dummy load and is not less than 10% or more than 20% of the rated output power of the visual carrier. The tests were performed with aural power adjusted to 500 W and verified using a spectrum analyzer to compare the relative level with that of the visual carrier. The power output of the transmitter is adjustable to at least 10 dB below rated power output. Measured TX Current Power Meter (Thru-Line Meter) Visual Carrier Only 2980W 120/115 Amps Visual + Aural Carrier 4430W 130/125 Amps The DC voltage across all output devices is 28 Volts

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Video Waveforms BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Video Waveforms

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Group Delay Characteristics Frequency (MHz) Delay (ns) 0.20 -10 0.50 -20 1.00 -10 1.50 +25 2.00 +20 2.50 +25 3.00 -28 3.58 -150 4.18 -280

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Attenuation Characteristics Frequency (MHz) Amplitude -0.50 -0.8 Carrier 0 (ref) 0.50 1.2 1.00 0.6 1.50 0.2 2.00 0.4 2.50 0.4 3.00 0.2 3.50 0.2 3.58 0.3 4.00 0.8

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Test Setup Block Diagram Video Test Setup Audio Test Setup BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Test Equipment List: Instrument Make/Model Serial # Cal. Due Date Spectrum Analyzer HP8591E 3308A01099 Aug 04 2004 Sideband Adapter Tek 1405 B040435 Aug 06 2004 Video Test Set Tek VM700A B030848 Feb 24 2005 Waveform Generator Tek 1910 B010752 Oct 14 2004 Audio Generator Tek ASG100 B010581 Aug 01 2004 Frequency Counter HP5385A 2730A04405 Aug 08 2004 TV Test Receiver EFA 2067.3004.93 Jul 03 2005 Mod Meter HP 8901A 2142A04405 Aug 08 2004 Power Meter Coax Dyn. 81000-A 4196 Mar 07 2005

BZ5T5000U Application for FCC Certification Modulator Input 5000Watt UHF Translator Test Setup Photo