CWWP25XXFF1AMPLIFIER

P25XXFF1 Power Amplifier User’s Manual 1. General Information Power Amplif ier (PA) is a AB/C-class unit. It is intended for amplifi cation of single carrier phase (frequency) modulated (manipulated) narrowband signals. VHF range is divided by 4 working subranges: - 136 – 144 MHz (subrange “DA”); - 144 – 152 MHz (subrange “DB”); - 152 – 162 MHz (subrange “EA”); - 162 – 174 MHz (subrange “EB”). Subrange code is reflected in the place “FF” of PA coding: P25-XXFF1-C6-001. Code “XX” shows the input power range: Code: R1 R2 R5 1 2 5 10 20 Range, W: 0.1-0.2 0.2-0.5 0.5-1.0 1.0-2.0 2.0-5.0 5.0-10 10-20 20-50 In the normal operating mode the minimum output power is 250 W. Input VSW R is not greater than 1.6:1. PA meets all FCC requirements to harmonic and spurious levels. The nominal power supply voltage is 13.8 VDC. DC current consumption does not exceed 50 A in the normal operation at 13.8V. Working ambient temperature range lies from -30ºC to +60ºC. Input and output power levels are set up in the factory. Customer has an opportunity to reduce the output power, adjusting the special trimmer resistor in the unit, or picking up the value of outer resistor, connected to PA control pin. PA has automatic power control loop that provides the stability of output power during the normal operation and all necessary changes of power in the case of load mismatch or unit overheating. PA is intended for rack mounting in the standard 19” cabinet. The front panel is 10” high. The deepth of unit does not exceed 5”. Four LEDs on the front panel indicate the status of unit operation. The hole in the side wall gives an access to the trimmer resistor, which allo ws reducing the output power against the set value. There are two N connectors on the back of chassis. There is power filt ering DC connector at the back of chassis with four # 6-32 screws: 2 for “+” pole and 2 for “-“ pole. There are 3 filt er feedthroughs on the back of chassis that bring out the alarm signal, as well signals for the outside power control. Two fans on the back side of unit perform the forced air cooling. 2. Installa tion Guide 2.1. Unit installa tion shall provide proper air access to the unit; no obstacle for air is allowed closer than 3” from fans. 2.2. Copper wires # 10 AWG shall be use in DC power lin e. Wires shall be crimped to ring terminals. Two parallel wires shall be use for the positive voltage and two parallel wires shall be used for the ground side. Put terminal under PI-shape shunts on DC connector. Do not remove shunts! 3. Operation Guide 3.1. Power supply voltage shall be in the range 13.8 V + 0.8 V. 3.2. The input power within the working frequency range shall be within the listed above limits. It is prohibited to apply any RF signal out of the working frequency range with a power, greater than 10% of the minimum rated one. 3.3. Green LED “DC ON” is on, when DC voltage is applie d to the unit. 3.4. Red LED “LOW POWER” is on when the output power drops below 80% - 85% of set level. In the majority of cases, it warns about an internal problem. However, the output power may fail due to high load VSW R (in this case, the LOW POWER LED tells that the power decrease is stronger than is needed for VSW R protection). 3.5. Red LED “HIGH VSW R” is on when the load VSW R exceeds 2.4 – 3.0. The output power is reduced. 3.6. Red LED “HIGH TEMP” is on when the heatsink temperature is over +85 ̊C. Then the unit operates with an output power reduced to about 75% of rated. 3.7. Voltage at filt er “ALARM” is approximately 9.5V during normal operation and drops to less than 0.5V when any of above mentioned red LEDs turns on. If a 1.8 kOhm resistor is connected between this filter and the ground, a TTL compatible output is created. 3.8. It is possible to significantly reduce the output power by pulling feedthrough pin “SH/D” to the ground. However, it is possible to change the output power smoothly by a trimmer resistor (50 kOhm is recommended), connected between this pin and ground. 3.9. The output power drops to about 75% of rated level, if the filter “CTRL” is pulled to the ground. 3.10. In fan operation test, fans are running during the first 3 seconds after the moment that DC voltage is applie d to the unit. Fans start rotating when an RF signal is applied at the input, with delay of 3 sec and stops rotating 8 sec after switching RF off. In the case of unit overheating fans are running continuously, no matter, is RF signal applie d or not. • Notice: The manufacturer’s rated output power of this equipment (see Table 3-1) is specified for single carrier operation using constant-envelope modulation. This equipment is NOT designed for multiple-carrier operation, nor is it intended to be used with non-constant envelope modulation types. Table 3-1. Amplifier Specifi cations Specification Value Instantaneous Bandwidth 136-174 MHz Output Power 250 W Input Impedance 50 Ohms Output Impedance 50 Ohms Table 3-2. Amplifier Input Power Ranges Input Power Designator Code Input Power Range Nominal Gain (250W Output) R1 0.1-0.2 W 34.0 dB R2 0.2-0.5 W 31.0 dB R5 0.5-1 W 27.0 dB 1 1-2 W 24.0 dB 2 2-5 W 21.0 dB 5 5-10 W 17.0 dB 10 10-20 W 14.0 dB 20 20-50 W 11.0 dB 4.0 RF ENERGY EXPOSURE AWARENESS, CONTROL INFORMATION, and OPERATIONAL INSTRUCTIONS for COMPLIANCE with FCC RF EXPOSURE LIMITS NOTICE: This power amplifier product is intended for use in environments in which personnel have full knowledge of their exposure and can exercise control over their exposure to meet FCC limits. This power amplifier is NOT authorized for use by the general population, consumer, or for use under conditions where unintended or accidental exposure may occur. This power amplifi er product generates electromagnetic energy in the radio frequency (RF) spectrum to provide communications between users over a distance. RF energy is one specific form of electromagnetic energy. Other forms include, but are not limited to, sunlig ht and x-rays. RF energy, however, should not be con…

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920 E. State Parkway • Schaumburg, IL 60173 Toll Free Number: (800) USA MADE (800.872.6233) Phone: 847.908.5400 • Fax: 847.908.5408 www.crescendtech.com • E-mail: [email protected] May 15, 2013 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: CWWP25XXFF1 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Schematic Schematics P25 VHF.pdf Block Diagram Block Diagram P25 VHF.pdf Parts List Semiconductor List P2 5VHF.pdf Operational Description Description P25 VHF.pdf Test Tune Procedure Test Procedure P25 VHF.pdf Semiconductor List Semiconductor List P25 VHF.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Pursuant to DA 04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Internal Photos Internal Photo P25 VHF.pdf External Internal Photos External Photos P25 VHF.pdf User manual Users Manual P25 VHF.pdf Sincerely, Mark Obermann

Side Front Rear

Label Location

Board top side components. Bottom side no components, ground plane.

Page 1 of 3 RF Exposure Report General information: Device category: Mobile per Part 2.1091 Environment: Uncontrolled Exposure Fixed devices that operate under Part 90 of this chapter are subject to routine environmental evaluation for RF exposure prior to equipment authorization or use if they operate at frequencies of 1.5 GHz or below and their effective radiated power (ERP) is 1.5 watts or more. However, compliance with the power density limits of 1.1310 is not required. Antenna: This device is typically used in fixed location service only. The although the manufacturer does not specify an antenna. A typical antenna in this type of service has a gain of 0 dBi. Configuration Antenna p/n Type Max. Gain (dBi) Fixed mounted Any omni 0 Operating configuration and exposure conditions: The conducted output power is 250 Watts. In typical use the duty cycle can approach 100%. The manufacturer also markets this device only for occupation use. But in fixed use the exposure is generally uncontrollable. A typical installation consists of an antenna system with a coaxial cable of the type RG 213/U which has a loss of 1dB for a length of 40 feet at these frequencies. Page 2 of 3 MPE Calculation: The minimum separation distance is calculated as follows: The limit for uncontrolled exposure environment below 300 MHz is 0.2 mW/cm 2 . Channel frequency: 136 to 174 MHz The conducted power output is 250 watt. The coax loss was taken as 1.5 dB (50 ft). Antenna gain was taken as 0 dBi Page 3 of 3 Proposed RF exposure safety information to include in User’s Manual: “FCC RF Exposure Requirements: CAUTION: The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other transmitter/antenna system. The antenna should be mounted so as to maintain a distance of at least 11.2 ft (3.4 m) between the antenna and bystanders, when operated in a typical installation and a 0 dBi antenna. Failure to observe these restrictions will result in exceeding the FCC RF exposure limits.

FCC PT 90 AMPLIFIER AND IC RSS-131, RSS-GEN TEST REPORT APPLICANT CRESCEND TECHNOLOGIES, LLC ADDRESS 140 E. State Parkway SCHAUMBURG IL 60173 USA FCC ID CWWP25XXFF1 IC LABEL 7291A-P25XXFF1 MODEL NUMBER P25 Series VHF PRODUCT DESCRIPTION 250W RF VHF AMPLIFIER DATE SAMPLE RECEIVED 5/1/2013 DATE TESTED 5/10/2113 TESTED BY John A. Day APPROVED BY John A. Day TIMCO REPORT NO. 754AUT13TestReport.doc TEST RESULTS PASS FAIL THE ATTACHED REPORT SHALL NOT BE REPRODUCED EXCEPT IN FULL WITHOUT THE WRITTEN APPROVAL OF TIMCO ENGINEERING, INC. 849 NW STATE ROAD 45 NEWBERRY, FL 32669 USA PH: 888.472.2424 OR 352.472.5500 FAX: 352.472.2030 EMAIL: [email protected] HTTP://WWW.TIMCOENGR.COM Certificate # 0955-01 Applicant: CRESCEND TECHNOLOGIES, LLC FCC ID: CWWP25XXFF1 IC: 7291A-P25XXFF1 MODEL #: P25 Series VHF Report: C\CRESCEND_CWW\754AUT13\754AUT13TestReport.doc Page 2 of 20 TABLE OF CONTENTS ATTESTATION STATEMENT ............................................................................ 3 REPORT SUMMARY ........................................................................................ 4 TEST ENVIRONMENT AND TEST SETUP ......................................................... 4 DUT DESCRIPTION ......................................................................................... 5 TEST EQUIPMENT .......................................................................................... 6 TEST PROCEDURES ....................................................................................... 9 TEST RESULTS ............................................................................................. 11 RF POWER OUTPUT ......................................................................................................... 11 OCCUPIED BANDWIDTH .................................................................................................. 14 SPURIOUS EMISSIONS AT ANTENNA TERMINALS (CONDUCTED) .................................... 16 FIELD STRENGTH OF SPURIOUS EMISSIONS (RADIATED) ............................................... 17 POWER LINE CONDUCTED INTERFERENCE .................................................................... 18 PASSBAND GAIN AND 20 dB BANDWIDTH ....................................................................... 19 Applicant: CRESCEND TECHNOLOGIES, LLC FCC ID: CWWP25XXFF1 IC: 7291A-P25XXFF1 MODEL #: P25 Series VHF Report: C\CRESCEND_CWW\754AUT13\754AUT13TestReport.doc Page 3 of 20 ATTESTATION STATEMENT This equipment has been tested in accordance with the standards identified in the referenced test report. To the best of my knowledge and belief, these tests were performed using the measurement procedures described in this report. Test Certificate #0955-01 All instrumentation and accessories used to test products for compliance to the indicated standards are calibrated regularly in accordance with ISO 17025: 2005 requirements. I attest that the necessary measurements were made by me or under my supervision, at Timco Engineering, Inc. located at 849 N.W. State Road 45, Newberry, Florida 32669 USA. Signature: Function: ENGINEERING PROJECT MANAGER Date: May 14 th , 2013 Applicant: CRESCEND TECHNOLOGIES, LLC FCC ID: CWWP25XXFF1 IC: 7291A-P25XXFF1 MODEL #: P25 Series VHF Report: C\CRESCEND_CWW\754AUT13\754AUT13TestReport.doc Page 4 of 20 REPORT SUMMARY Disclaimer The test results relate only to the items tested. Purpose of Test To show the DUT in compliance with FCC CFR 47, Part 90 and IC RSS-131 requirements for amplifiers Test Procedures ANSI/TIA 603-C: 2004 FCC CFR 47 Part 90 IC RSS-131 ANSI C63.4: 2003 Related Approval N/A TEST ENVIRONMENT AND TEST SETUP Test Facility All tests were conducted by Timco Engineering Inc. located at 849 NW State Road 45, Newberry, FL 32669 USA Laboratory Test Condition Temperature: 26ºC Relative humidity: 50%. Deviation from the standards No deviation Modification to the DUT No modification was made. Test Exercise (software etc.) The DUT was placed in continuous transmitting mode of operation. System Setup Stand alone device. Applicant: CRESCEND TECHNOLOGIES, LLC FCC ID: CWWP25XXFF1 IC: 7291A-P25XXFF1 MODEL #: P25 Series VHF Report: C\CRESCEND_CWW\754AUT13\754AUT13TestReport.doc Page 5 of 20 DUT DESCRIPTION Manufactured by CRESCEND TECHNOLOGIES, LLC Product Description 250W AMPLIFIER FCC ID CWWP25XXFF1 IC Label 7291A-P25XXFF1 M/N P25 Series VHF Operating Freq 136 – 174 Max. Output Pwr +54 dBm (250W) Modulation N/A Amplifier Power Source 13.8 VDC Test Item Preproduction Type of DUT Fixed/Mobile Amplifier Applicant: CRESCEND TECHNOLOGIES, LLC FCC ID: CWWP25XXFF1 IC: 7291A-P25XXFF1 MODEL #: P25 Series VHF Report: C\CRESCEND_CWW\754AUT13\754AUT13TestReport.doc Page 6 of 20 TEST EQUIPMENT Device Manufacturer Model Serial Number Cal/Char Date Due Date 3/10-Meter OATS TEI N/A N/A 12/31/11 12/31/13 3-Meter OATS TEI N/A N/A 12/31/11 12/31/13 3-Meter Semi- Anechoic Chamber Panashield N/A N/A 12/31/11 12/31/13 Antenna: Active Loop ETS-Lindgren 6502 00062529 09/23/10 09/23/13 Antenna: Biconnical Eaton 94455-1 1057 05/31/11 05/31/13 Antenna: Biconnical Eaton 94455-1 1096 05/04/11 05/04/13 Antenna: Biconnical Electro-Metrics BIA-25 1171 06/13/12 06/13/14 AC/DC Clamp Meter Electronic Specialties ES-687 07065852 2/25/2013 2/25/2015 Antenna: Double- Ridged Horn/ETS Horn 2 ETS-Lindgren 3117 00041534 10/05/12 10/05/14 Antenna: Log- Periodic Eaton 96005 1243 05/31/11 05/31/13 Antenna: Log- Periodic Electro-Metrics LPA-25 1122 05/04/11 05/04/13 Audio Generator B&K Precision 3010 8739686 09/11/12 09/11/14 BandReject Filter Lorch Microwave 5BR4- 10525/900-S Z1 01/17/13 01/17/15 BandReject Filter Lorch Microwave 5BR4- 2400/60-N Z1 12/11/12 12/11/14 BandReject Filter Lorch Microwave 6BR6- 2442/300-N Z1 12/07/12 12/07/14 Broadband Preamplifier A.H. Systems Inc. PAM-0126 128 03/14/11 03/14/13 Coaxial Cable - Chamber 3 cable set Semiflex Unknown 01/26/12 01/26/14 Applicant: CRESCEND TECHNOLOGIES, LLC FCC ID: CWWP25XXFF1 IC: 7291A-P25XXFF1 MODEL #: P25 Series VHF Report:…

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