PW2DTXPRO1200U1.2 KW DTV TRANSMITTER

DTXPRO-1.2KU INSTRUCTION MANUAL PINEAPPLE TECHNOLOGY, INC PRELIMINARY DRAFT PINEAPPLE TECHNOLOGY, INC. TABLE OF CONTENTS DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION TABLE OF CONTENTS SECTION I --- SAFETY NOTICES................................................................................ I-1 SECTION II --- TRANSMITTER SPECIFICATIONS ........................................................ II-1 SECTION III--- TRANSMITTER INSTALLATION ......................................................... III-1 SECTION IV --- TRANSMITTER TURN-ON PROCEDURE..................................... IV-1 SECTION V --- THEORY OF OPERATION A. INTRODUCTION............................................................................................ V-2 B. ACDIS2 AC and DC Distribution....................................................................... V-2 C. PS6KW 6K Power Supply ............................................................................... V-3 D. ADP500/PAS Performance Monitor .................................................................. V-3 E. DXDPRO-10U Digital Modulator and Exciter...................................................... V-5 F. PA1KU-50 Final Amplifier................................................................................ V-5 G. Driver and ALC Circuits ................................................................................. V-5 H. USH3C-3 Three-Way Hybrid Splitter ............................................................... V-6 I. UCH2KU-3 Multicoupler Combiner................................................................... V-6 J. DC5KC-1 Directional Coupler... V-6 K. BPUD2.5K ATSC-Compliant Mask Filter........................................................... V-6 L. BLP5KU-KK Harmonic Filter.......................................................................... V-7 SECTION Vl --- BLOCK DIAGRAMS AND PARTS LIST A. DTXPRO-1.2KU BLOCK DIAGRAM.... .............................................................. VI-5 B. DTXPRO-1.2KU SUBASSEMBLIES......................................................................... VI-6 C. FILTER AND COUPLER LAYOUT..................................................................... VI-7 C. MFA2PA....................................................................................................... VI-12 D. PA1KU-50.................................................................................................... E. 1A0035........................................................................................................ F. DC5KC-1 DIRECTIONAL COUPLER............................................................... VI-15 G. PARTS LIST VI-16 SECTION VII --- RECOMMENDED ROUTINE MAINTENANCE ...................................... VII-1 SECTION VIII ---ADJUSTMENTS AND TUNING ......................................................... VIII-1 SECTION IX ---- PROBLEM SOLVING / TROUBLE SHOOTING........................................ IX-1 SECTION X---- WARRANTY ................................................................................... X-1 SECTION I SAFETY NOTICES PINEAPPLE TECHNOLOGY, INC. I. SAFETY NOTICES DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION I. -2 l ---SAFETY NOTICES ** READ THIS SECTION BEFORE INSTALLATION ** SEVERE ELECTRICAL SHOCK OR BURNS MAY OCCUR IF THIS EQUIPMENT IS USED IMPROPERLY. NEVER WORK ON THIS EQUIPMENT ALONE. ALWAYS HAVE ANOTHER PERSON PRESENT WHILE WORKING ON ELECTRICAL CIRCUITS OR MOVING EQUIPMENT. COMMUNICATIONS TO EMERGENCY SERVICES SHOULD BE AVAILABLE AT ALL TIMES. BEFORE CONNECTING THIS EQUIPMENT TO ANY AC ELECTRICAL SOURCE READ THE SECTION ON INSTALLATION. ALL ELECTRICAL WIRING FOR THIS EQUIPMENT MUST BE PERFORMED BY QUALIFIED ELECTRICIANS. ALL WIRING MUST BE COMPLIANT WITH LOCAL ELECTRICAL CODES. POWER AMPLIFIERS AND SUPPLIES ARE HEAVY. TO INSTALL THIS EQUIPMENT IN RACKS USE TWO (2) PERSONS TO AVOID POSSIBLE INJURIES. NEVER OPEN THE CABINET ENCLOSURE OR UNPLUG CABLES OR WIRES WHILE THIS EQUIPMENT IS OPERATING. ALL SERVICE WORK MUST BE PERFORMED BY QUALIFIED TECHNICIANS ONLY. IF ONE IS NOT AVAILABLE LOCALLY, CONTACT PINEAPPLE TECHNOLOGY, INC. FOR A LIST IN YOUR AREA. Section II Transmitter Specifications PINEAPPLE TECHNOLOGY, INC. II – TRANSMITTER SPECIFICATIONS DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION II - 2 II – TRANSMITTER SPECIFICATIONS OPERATING Input Connector.............................. ASI or SMPTE310M Transport Stream Data Rate............... 75 Ohm BNC External GPS Clock Input.................. 19,390 kbps Power Output................................. Optional RF Output Impedance...................... 800 to 1.2 KW AVG POWER RF Output Connector....................... 50 ohms Frequency Range ........................... 1 5/8” EIA Standard (7-16 DIN and 7/8” EIA Optional) Frequency Stability.......................... 470 – 806 MHz (Channel 14 to Channel 69) Modulation.................................... < ±10 kHz Channel Bandwidth......................... 8VSB Peak to Peak Group Delay................ 6 MHz Conducted Spurious & Harmonics...... < 20 ns Radiated Spurious & Harmonics......... FCC 74.794 Compliant MER............................................. FCC 2.1053 Compliant IMD shoulders for upper or lower SB.... 35 dB Typical Digital Emissions.............................. -50dB Typical AC Power Consumption..................... FCC 74.794 Compliant AC Line Voltage................................ 6.3 kW maximum AC Line Frequency........................... 208 – 240 VAC Single Phase Input Transport Stream....…

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PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-3 VI. BPUD2.5K6S158-J MASK FILTER PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-4 VI. – BPL5KU-KK HARMONIC FILTER PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-5 VI. – UCH2KU-3 THREE-WAY HYBIRD COMBINER PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-6 VI. MFA2PA PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-7 VI. PA1KU-50 AMPLIFIER ASSEMBLY PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-8 VI. – 1A0035 – STATUS BOARD PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-9 VI. - DC5KC – 1 DIRECTIONAL COUPLER (Includes PAS6 – PA Selector and ADP500 Monitor) PINEAPPLE TECHNOLOGY, INC. VI. BLOCK DIAGRAMS AND PARTS LIST DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VI-10 VI. PARTS LIST PA1KU-50 QUANTITY PTI PART NUMBER DESCRIPTION 1 each DX25U-50 power pallets 2 each DX500U-50 power pallets 1 each 1A5004 Phase and gain matching circuit 1 each PC9022B 2-Way gain & in-phase splitter 1 each PC9601B 2-Way in-phase combiner 1 each Dependent upon channel number Circulator 1 each 1A0025 Power distribution module 3 each 310013 Thermal sensors 1 each 481250 Remote monitor port (DB9) 1 each 480401 Front panel status port (Molex) 1 each 451051 Filtered DC input port 1 each CCA102 Type N Panel mounted RF Input port 1 each CCA4002 DIN 7/16 Panel mounted RF Output port MFA2PA QUANTITY PTI PART NUMBER DESCRIPTION 2 each 851025B 470 CFM cooling fans 2 each 990199 Air filter assemblies 2 each 1A0035 Front panel status PC boards 1 each MF9100E Main chassis 2 each MF9139 Mechanical slide assemblies 1 each MF9310 AC Inlet filter SECTION VII Routine Maintenance PINEAPPLE TECHNOLOGY, INC. VII – ROUTINE MAINTENANCE DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VII - 2 VII --- ROUTINE MAINTENANCE The following KEY MAINTENANCE AND PERFORMANCE CHECKS should be made monthly or more frequently in some environments where dust and rodents are problems. Pineapple Technology, Inc. recommends that the station provide a data log book to maintain these records. DANGER: SOME OF THE RECOMMENDED TESTS REQUIRE THAT THE TRANSMITTER BE OPERATING IN NORMAL MODE. THIS PROCEDURE MUST BE PERFORMED BY A BROADCAST ENGINEER. MORE THAN ONE PERSON SHOULD BE PRESENT IN CASE OF AN ACCIDENT REQUIRING ASSISTANCE. COMMUNICATIONS TO EMERGENCY SERVICES SHOULD BE AVAILABLE. TRANSMITTER • This is an integrated 1.2 KW digital transmitter and is built around three (3) PA1K-50 amplifier assemblies located in two (2) MFA2PA-50 mainframes. • Record the transmitter forward and reflected power. These readings should be compared to previous readings to insure normal operation. • Using the ADP500 record currents for each power LDMOS device in the transmitter. • Carefully inspect RF Output coaxial cables for excessive heating or discoloration. • Check DC Power connections on shunt panels and power supplies for over-heating which could indicate the hardware needs attention. • Check DC Connections on the PA rear panel. • Remove and clean the air filters located on the front panel of each MFA2PA-50 mainframe assembly. It is safe to remove the filter while the transmitter is operating. The filters may be cleaned with a light detergent and dried completely before re- installing. Spare filters are available from Pineapple Technology, Inc. Request Part Number P/N 990199 when ordering. FACILITIES . • Clean all air inlet filters and exhaust outlets to ensure that the transmitter is getting clean unobstructed airflow. • Perform recommended service on air condition systems. • Rodent traps or baits should be renewed to keep the facilities clear of these pests which can cause damage to the transmitter. SECTION VIII Adjustments and Tuning PINEAPPLE TECHNOLOGY, INC. VIII – ADJUSTMENTS AND TUNING DTXPRO-1.2KU OPERATING AND SERVICE MANUAL THE INFORMATION PROVIDED HEREIN IS PINEAPPLE TECHNOLOGY INCORPORATED PROPRIETARY INFORMATION AND CANNOT BE COPIED OR DISTRIBUTED WITHOUT PRIOR AUTHORIZATION VIII - 2 VIII --- ADJUSTMENTS AND TUNING The DTXPRO-1.2KU is a new series of transmitters offered by Pineapple Technology, Inc. The latest in LDMOS device and circuit technology are employed to ensure reliable and serviceable operation for many years. There are ver…

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PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 1 DTXPRO-1.2KU DTXPRO-1.2 KU External Construction Photos FULL FRONT VIEW PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 2 FRONT TOP THIRD VIEW FRONT MIDDLE THIRD VIEW FRONT BOTTOM THIRD VIEW PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 3 DTXPRO-1.2 KU Construction Photos DTXPRO-1.2 KU LEFT SIDE DTXPRO-1.2 KU RIGHT SIDE PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 4 DTXPRO-1.2 KU Construction Photos BACK FULL VIEW DOOR CLOSED

1 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS FCC Label Form FCC Label Placement

PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 1 DTXPRO-1.2 KU Internal Construction Photos BACK FULL VIEW DOOR OPEN PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 2 DTXPRO-1.2 KU Construction Photos BACK INSIDE TOP THIRD VIEW PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 3 DTXPRO-1.2KU CONSTRUCTION PHOTOS BACK INSIDE MIDDLE THIRD VIEW PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 4 DTXPRO-1.2 KU CONSTRUCTION PHOTOS BACK INSIDE BOTTOM THIRD VIEW

V. THEORY OF OPERATION A. INTRODUCTION The DTXPRO-1.2KU transmitter was designed to meet or exceed all FCC applicable specifications for TV broadcast equipment. Special attention was given to the selection of sub-assemblies and components to achieve maximum reliability and minimum down time. The construction of the DTXPRO-1.2KU is BASIC and MODULAR with most subassemblies field replaceable. Special emphasis was placed on "KEEPING IT SIMPLE" and returning to more traditional transmitter layouts and instrumentation. Refer to the DTXPRO-1.2KU block diagram for an overview of the transmitter architecture. This will give the technician basic information needed to understand the operation of the transmitter and the function of each subassembly. B. ACDIS2 AC AND DC DISTRIBUTION The ACDIS2 is the primary AC power inlet module. The DTXPRO-1.2KU transmitter was designed to accept 208 to 240 VAC Single Phase using a four (4) wire connection. The four wires are: --- 2 wires for 208 -240 VAC Single Phase --- 1 wire for neutral connection --- 1 wire for safety ground connection CAUTION: Connection to the AC Primary source must be made using all four wires listed above. Follow the wiring instruction given in TRANSMITTER INSTALLATION Section lll.3. If not followed, severe damage to the transmitter and, or, electrical shock could result. The ACDIS2 performs the following functions: 1. Provides a primary AC power breaker point to shutdown the transmitter 2. Provides 208-240 VAC power to each of the 2 KWDC power supplies with individual breaker points for added safety. 3. Provides 110 VAC circuits for DXDPRO-10U, ADP500, ABS (as necessary) and AUX Power where needed. 4. Analog metering is provided to monitor the Power Supply voltage and current being applied to the RF Amplifier stages. 5. Power supply current sharing test points are provided for checking current sharing between power supply modules. C. PS6KW 6 KW POWER SUPPLY ASSEMBLY FOR 50 VDC OPERATION The DTXPRO-1.2KU transmitter is designed with over 6 KW of DC power. To achieve this level, the power supply in each transmitter rack is made up of three (3) AC2050 power modules mounted into one (1) main frame assembly, AC2009, which is capable of managing all three (3) 2 KW modules. The power modules are "HOT PLUGGABLE" and can be removed or installed without turning off the transmitter. A third power supply module can be purchased for added redundancy. Each power supply module has OVER VOLTAGE, OVER CURRENT AND OVER TEMPERATURE protection as well as a fault signal in the event of a failure. REFER TO MANUFACTURER'S MANUAL FOR THE RRSI SERIES POWER SUPPLY PROVIDED WITH THIS DTXPRO-1.2KU USERS MANUAL. D. ADP500 PERFORMANCE MONITOR AND PAS SELECTOR SWITCH The ADP500 Performance Monitor provides the following functions: 1. Provides device current monitoring of all the pallets used in the three (3) PA1K- 50 power amplifier assemblies. The current levels can be read directly from the multi-meter on the front panel. Individual PA's and pallets are selectable on the ADP500 and PAS. In normal operation, a PA FAULT is indicated when the LED goes from green to red. RED indicates that the current level is below 500 mA and a transistor device may have failed. To read the actual current, select the appropriate Power Amplifier (i.e.: PA1, PA2 or PA3) using the rotary switch on the PAS. Then, using the rotary switch on the ADP500, rotate through the 5 PA positions to measure the drain current on each transistor device for the selected power amplifier module. The multi-meter will read the actual current. 2. A PA INHIBIT switch is provided for failure diagnostic purposes. When activated, this switch allows the technician to monitor the bias currents for each pallet. These readings were recorded at the factory and are found on the Transmitter Test Report, DC Test Report Section. This is the best way to troubleshoot possible transistor problems. When in the PA INHIBIT mode, the RF PWR OFF LED will change from green to red indicating that the "SHUTDOWN LINE" is at TTL 0 state and the output power has been reduced to near zero. D. ADP500 PERFORMANCE MONITOR AND PAS SELECTOR SWITCH (Continued) 3. An RF MONITOR port (BNC) is available to connect a spectrum analyzer for monitoring the output signal. 4. METER SELECTION SWITCHES – The rotary switches on the PAS are used to select the appropriate PA module (PA1K) for performance display on the ADP500. The PA designations on the ADP500 are PA5, the driver transistor device then PA1 and PA2, indicating the devices on the left side DX500U Pallet. PA3 and PA4 indicate the current through the devices on the right side DX500U Pallet. The rotary switch on the ADP500 is the detail selector for the multi-meter. The various positions are defined as follows: PA5 Reads PA Driver device currents as selected Typical reading in INHIBIT MODE 1.5 to 2.5 A. Typical reading in normal transmitter operation approximately 1 to 2 amps. PA1 to 4 Reads the individual drain currents on each device located on the pallets located on the left and right side of the Power Amp selected. Typical reading in normal transmitter operation is approximately 7 to14 amps. PA6 Not used PS VOLTS Reads DC voltage applied to PA stages Typical reading for 50 VDC would be the center of the meter, in the green zone. *P FWRD Reads PA output power from the mask filter in RMS percentage of rating. Full power reading would be 100%. *P RFLD Reads PA output power being returned from the load and displayed as a percentage of forward power. Typical reading would be < 5% indicated. AUX 1 AND AUX 2 Not used in this configuration. *This feature is disabled on units used in the DTXPRO-1.2KU. This feature is displayed on the DXDPRO-10U Modulator/Exciter front panel. E. DXDPRO-10U DIGITAL MODULATOR AND EXCITTER The heart of any TV Transmitter is the Modulator. This equipment receives the ASI or SMPTE digital stream from the program source. The modulator generates the ATSC/8VSB signal and up …

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PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 1 DTXPRO-1.2 KU Transmitter Parts List 2ADTX1KU-50 - DTX1KU-50 RACK PRE FAB 1 ea PA1KU-50 - PA ASSY, UHF, 400W RMS, 50VDC, MFA2PA-50 3 ea PTI_LABOR - IN HOUSE LABOR 35 hr TR500U - TERMINATION, UHF, 500 W CW DC-1 GHz 2 ea UCH2KU-3 - COMBINER, HYBRID, MULTICOUPLER, 3 INPUTS @ 670W, 5 X 7-16 DIN, 1X1 /5/8" UNFLANGED, 2KW OUTPUT 1 ea DC2KC-4 - DC, 2 KW RMS, UHF, 1 5/8 FLG 2 ea BPUD2.5K6S158-J - FILTER, UHF, 2.5 KW RMS, DIGITAL, 6 SECT X-COUPLE, 1 5/8" FLG, JAMPRO 1 ea USH3C - SPLITTER, UHF, PHASED, 3 OUTPUTS, N CONNECTORS (COM-TECH) 1 ea AC2050 - POWER SUPPLY, 50VDC, 2.5KW, UNIPOWER 2 ea CA267 - WIRING KIT, DC POWER, 50V PA'S TO P/S, ALL MFA2PA TRANSMITTERS, GENERIC LENGTH 3 ea DXDPRO-10U - MODULATOR, DIGITAL, UHF, ADAPTIVE, 10W RMS 1 ea INHOUSE-ENG TEST - ENG TESTING AND FIXIT 20 ea SHIPACK001 - SHIPPING CRATE, 40 RU, WOODEN, HAMMOND RACK 1 ea BLP5KU-KK - FILTER, UHF, HARMONIC/LOW PASS, 5 KW DTV, 1 5/8 EIA, COM-TECH 1 ea

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PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 1 TEST REPORT DTXPRO-1.2KU TRANSMITTER TECHNICAL REPORT The following information is provided to support the technical performance of the PTI DTXPRO-1.2KU transmitter. The information is supplied for broadcast TV service according to applicable portions of FCC Rule Part 74. The information in this report is provided in support of verification that the transmitter meets the appropriate requirements. Measurements were recorded of spectrum and other appropriate data to demonstrate compliance. 1. Power Output Measurements 2. Frequency stability tests versus AC input voltage and temperature 3. Harmonic and spurious measurements to demonstrate the transmitter meets the DTV stringent emission mask and FCC Rule 74.794 4. Measurement of cabinet radiation for spurs and harmonics as specified in FCC Rule 2.1053 and Rule 2.1057 Measurements for these parameters were conducted at power output level of both 1200 watts and 800 watts. The test equipment used for the measurements on the following pages is listed in this exhibit. DTXPRO-1.2KU PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 2 TABLE OF CONTENTS RF Output Power Measurement................................................................................. 3 Emission Mask Compliance....................................................................................... 6 FCC Label and Form Placement................................................................................ 16 Frequency Stability................................................................................................. 17 Cabinet Radiation................................................................................................... 19 Cabinet Photos...................................................................................................... 23 DTXPRO-1.2 KU Parts List....................................................................................... 30 Test Equipment List................................................................................................ 31 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 3 RF Power Output Measurements The equipment was configured as below shown in Figure 1. The loss through the directional coupler was calibrated at the channel center frequency of 539 MHz. Average power was read on the Agilent E4418B Power Meter. Setup for Output Power and Spurs and Harmonics Measurements The loss of the directional coupler was determined to be 54 dB. FIGURE 1 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 4 Measurement Of Nominal Transmitter Power The transmitter was energized in the test configuration above and the power was read on the Agilent E4418B Power Meter. The indicated reading is shown below. Calculation of Output Power: An offset of 54dB, equal to the directional coupler loss, entered into the E4418B allows direct display of output power in watts average power. Measured transmitter final voltage is 50VDC and final current is 90amps. PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 5 Low Power Operation The transmitter was energized in the test configuration above and the power was read on the Agilent E4418B power meter. The indicated reading is shown next. Calculation of Output Power: An offset of 54dB, equal to the directional coupler loss, entered into the E4418B allows direct display of output power in watts average power. Measured transmitter final voltage is 50VDC and final current is 60amps. PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 6 Emission Mask Compliance To determine emission mask compliance the test equipment configuration shown on Figure 1 and Figure 2 was used. The transmitter was tested for compliance with the stringent emission mask classification. The first part of the tests measured the adjacent channel emission and the second part of the tests measured the harmonic and spurious energy. The transmitter was energized at 1200 watts on Channel 25 (center frequency of 539 MHz) as calculated by the insertion loss of the directional coupler and a reference was established on the spectrum analyzer (using the channel power measurement mode). The bandstop filter frequency response was determined using a network analyzer. The insertion loss at the center of each of the twelve 500 kHz segments either side of the main channel was tabulated. The bandstop filter response is shown on the next page as Plot 1. FIGURE 2 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 7 Plot 1 - Channel 25 Stopband Filter Screenshot 1 The filter was inserted in the path between the coupler and the spectrum analyzer and amount of change indicated in the channel power was 26 dB so this is the value of attenuation used for further optimization of the input level later in the measurements. PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 8 The next step was to measure the first four 500 kHz sub-bands on each side of the desired channel. For this part of the measurement, the stopband filter was not necessary. The attenuator on the spectrum analyzer was adjusted so that it was not being overloaded. Once the first four sub-bands were measured, the signal was close to the noise floor. Screenshots 2 and 3 show the spectrum on each side of the desired channel as an example of the measurements. Screenshot 2 Lower sideband spectrum measured using channel power mode Center frequency = 535.75MHz Sub Band -1 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 9 The next step was to install the bandstop filter in the path from the coupler to the spectrum analyzer and reduce the attenuation so that the emissions in the remaining subbands could be measured. Screenshot 3 Upper sideband spectrum measured using channel power mode. Center frequency = 542.25 MHz Sub Band +1 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST R…

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PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 1 Frequency Stability Measurements Equipment Model: DTXPRO-1.2KU Frequency stability versus temperature and line voltage was measured in a controlled environment. For these tests, the exciter RF output was fed to a calibrated Rohde & Schwarz test set that has better than a 1 ppm accuracy. The test equipment configuration is shown below: The variac was adjusted for nominal voltage and the frequency was recorded. Then the variac was adjusted to 85% and 115% of the nominal voltage and the frequency was recorded at each voltage level. The results are tabulated below: Line Voltage (Volts) Pilot Frequency (MHz) 103 (85%) 536.309471 121 (Nominal) 536.309482 139(115%) 536.309475 PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 2 For the temperature stability measurements, the exciter was placed inside a Cincinnati Sub-Zero temperature chamber -- Model Z-32-2-2H/WC equipped with a CSZ Dimension II temperature controller. The exciter was energized and the pilot frequency was measured on the Rohde and Schwarz test set. The temperature was then raised to +40 o C, allowed to stabilize for 15 minutes and then cycled to each colder temperature where it was allowed to stabilize for 10 minutes before recording the measured frequency and moving on to the next lower temperature. Set Pilot Freq=536.3094406 Temperature o C Time Pilot Freq *MHz) Difference (Hz) 25 11:25 536.309515 74 40 11:46 536.309908 467 30 12:10 536.309688 247 20 12:30 536.309513 72 10 12:50 536.309574 133 0 13:10 536.309755 314 The recorded data indicates that the frequency stability requirements of FCC Rule 2.1055 were met. PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 3 CABINET RADIATION The transmitter and test equipment were configured as shown below including the angles of measurement with respect to the transmitter cabinet. The photo on the subsequent page also shows the physical set-up of the test equipment and equipment under test. The transmitter was operating at 1.2kW average power. The free space path loss, cable loss and antenna gain characteristics were obtained at the fundamental frequency and at each of the harmonics of the visual carrier frequency in order to accurately assess the level of the signal radiated from the cabinet. Radiation from the cabinet was measured at a distance of 30 feet in 4 different physical rotation angles: 0, 90, 180 and 270 degrees ( 0 degrees being the front of the cabinet). All spectral components above -80 dB referenced to peak sync power radiated from the cabinet were recorded. The values are tabulated in the table on the next page following the photo. PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 4 Physical Cabinet Radiation Test Configuration This photograph shows the actual laboratory environment in which the cabinet radiation tests were conducted. The log periodic antenna, cable and spectrum analyzer are shown in the foreground and the DTXPRO-1.2KU is shown in the background. The transmitter was rotated 90 degrees for each of the measurement orientations. As calculated from the spreadsheet data on the following page, the worst case measurement was -70.2 dBm at the second harmonic. (The photo above shows this particular measurement). The measurement tables for the remaining views of the transmitter are shown on the following pages. PINEAPPLE TECHNOLOGY, INC. DTXPRO-1.2KU TEST RESULTS AND MESUREMENTS 5 Cabinet Radiation Test Results Test Inputs Conditions and Parameters Test Date August 29, 2010 Test Engineer Jim collier Transmitter Model Number DTXPRO-1.2KU Operating Power Output Level 60.8 dBm 1200 watts (Power) Center Frequency 0.539 gHz Chan…

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