N57RY-1352Homodyne Walkie-Talkie

APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCCID: N57RY-1352 OPERATIONAL DESCRIPTION: When Unit A is turned on, it transmits on 49.86 MHz. this is the frequency generated by crystal oscillator formed by the components around Q3. 49.86 MHz serves as a receiver local oscillator signal which heterodynes an incoming 49.405 MHz signal to a 455 kHz IF. The IF amplifier, detector, are all in IC2. Q1 is the RF amplifier for the receiver. IC1 is a CMOS hex inverter IC that is being used as an audio amp for the receiver audio. T2 is used to couple the microphone audio with the RF. The antenna is a spring wound wire which acts as a electrically short monopole. It is inductively coupled to the RF output through L1 and T1. The only user controls is the ON/OFF/VOLUME CONTROL. When Unit B is turned on it transmits on 49.405 MHz. This frequency again serves as both the transmitter carrier and the receiver Local Oscillator. This signal provides low side injection to produce a 455 kHz IF from an incoming 49.86 MHz. signal.

TABLE OF CONTENTS APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 TEST REPORT CONTAINING: PAGE 1........TEST EQUIPMENT & TEST PROCEDURE PAGE 2........TEST PROCEDURE CONTINUED PAGE 3........CIRCUIT DESCRIPTION PAGE 4........49.86MHz Tx RADIATION INTERFERENCE TEST DATA PAGE 5........49.405MHz Tx RADIATION INTERFERENCE TEST DATA PAGE 6........OCCUPIED BANDWIDTH TEST DATA EXHIBITS ATTACHMENTS: EXHIBIT 1........BLOCK DIAGRAM EXHIBIT 2........SCHEMATIC EXHIBIT 3........INSTRUCTION MANUAL EXHIBIT 4........FCC ID LABEL SAMPLE EXHIBIT 5........SKETCH OF FCC ID LABEL LOCATION EXHIBIT 6........EXTERNAL PHOTOGRAPH - FRONT VIEW EXHIBIT 7........EXTERNAL PHOTOGRAPH - LEFT SIDE VIEW EXHIBIT 8........INTERNAL COMPONENT SIDE PHOTOGRAPH EXHIBIT 9........INTERNAL COPPER SIDE PHOTOGRAPH EXHIBIT 10.......OCCUPIED BANDWIDTH - 49.86 MHz EXHIBIT 11.......OCCUPIED BANDWIDTH - 49.505 MHz APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 REPORT #: T:\CUS\W\WINATION\205ZH0\205ZH0.RPT TABLE OF CONTENTS APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 TEST EQUIPMENT LIST 1._X_Spectrum Analyzer: HP 8566B-Opt 462, S/N 3138A07786, w/ preselector HP 85685A, S/N 3221A01400, Quasi-Peak Adapter HP 8565OA, S/N 3303A01690 & Preamplifier HP 8449B-OPT H02, S/N 3008A00372 Cal. 10/17/99 2._X_Biconnical Antenna: Eaton Model 94455-1, S/N 1057 3._X_Log-Periodic Antenna: Electro-Metrics Model EM-6950, S/N 632 4.___Double-Ridged Horn Antenna: Electro-Metrics Model RGA-180, 1-18 GHz, S/N 2319 Cal. 4/27/99 5.___Horn 40-60GHz: ATM Part #19-443-6R 6.___Line Impedance Stabilization Network: Electro-Metrics Model ANS-25/2, S/N 2604 Cal. 2/9/00 7.___Temperature Chamber: Tenney Engineering Model TTRC, S/N 11717-7 8.___Frequency Counter: HP Model 5385A, S/N 3242A07460 Cal 10/6/99 9.___Peak Power Meter: HP Model 8900C, S/N 2131A00545 Cal 7/19/99 10._X_Open Area Test Site #1-3meters Cal. 12/22/99 11.___Signal Generator: HP 8640B, S/N 2308A21464 Cal. 9/23/99 12.___Signal Generator: HP 8614A, S/N 2015A07428 Cal. 5/29/99 13.___Passive Loop Antenna: EMCO Model 6512, 9KHz to 30MHz, S/N 9706-1211 Cal. 6/23/97 14.___Dipole Antenna Kit: Electro-Metrics Model TDA-30/1-4, S/N 153 Cal. 11/24/99 15.___AC Voltmeter: HP Model 400FL, S/N 2213A14499 Cal. 9/21/99 16.___Digital Multimeter: Fluke Model 8012A, S/N 4810047 Cal 9/21/99 17.___Digital Multimeter: Fluke Model 77, S/N 43850817 Cal 9/21/99 18.___Oscilloscope: Tektronix Model 2230, S/N 300572 Cal 9/23/99 TEST PROCEDURE GENERAL: This report shall NOT be reproduced except in full without the written approval of TIMCO ENGINEERING, INC. RADIATION INTERFERENCE: The test procedure used was ANSI STANDARD C63.4-1992 using a HEWLETT PACKARD spectrum analyzer with a prese- lector. The bandwidth of the spectrum analyzer was 100 kHz with an appropriate sweep speed. The analyzer was calibrated in dB above a microvolt at the output of the antenna. The resolution bandwidth was 100KHz and the video bandwidth was 300KHz. The ambient temperature of the UUT was 90°F with a humidity of 40%. APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 REPORT #: T:\CUS\W\WINATION\205ZH0\205ZH0.RPT PAGE #: 1 TEST PROCEDURES CONTINUED APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 FORMULA OF CONVERSION FACTORS: The Field Strength at 3m was estab- lished by adding the meter reading of the spectrum analyzer (which is set to read in units of dBuV) to the antenna correction factor sup- plied by the antenna manufacturer. The antenna correction factors are stated in terms of dB. The gain of the Preselector was accounted for in the Spectrum Analyzer Meter Reading. Example: Freq (MHz) METER READING + ACF = FS 33 20 dBuV + 10.36 dB = 30.36 dBuV/m @ 3m POWER LINE CONDUCTED INTERFERENCE: The procedure used was ANSI STAN- DARD C63.4-1992 using a 50uH LISN. Both lines were observed. The bandwidth of the spectrum analyzer was 10kHz with an appro- priate sweep speed. The ambient temperature of the UUT was 90°F with a humidity of 40%. ANSI STANDARD C63.4-1992 10.1.7 MEASUREMENT PROCEDURES: The unit under test was placed on a table 80 cm high and with dimensions of 1m by 1.5m. The table used for radiated measurements is capable of continu- ous rotation. When an emission was found, the table was rotated to produce the maximum signal strength. At this point, the antenna was raised and lowered from 1m to 4m. The antenna was placed in both the horizontal and vertical planes. The situation was similar for the conducted measurement except that the table did not rotate. The EUT was setup as described in ANSIC63.4-1992 with the EUT 40 cm from the vertical ground wall. APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 REPORT #: T:\CUS\W\WINATION\205ZH0\205ZH0.RPT PAGE #: 2 APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCCID: N57RY-1352 CIRCUIT DESCRIPTION: When Unit A is turned on, it transmits on 49.86 MHz. This is the frequency generated by crystal oscillator formed by the components around Q3. 49.86 MHz serves as a receiver local oscillator signal which hetrodynes an incoming 49.405 MHz signal to a 455Khz IF frequen- cy. The IF amplifier, detector, are all in IC2. Q1 is the RF ampli- fier for the receiver. IC1 is a CMOS hex inverter IC that is being used as an audio amp for the receiver audio. T2 is used to couple the microphone audio with the RF. The antenna is a spring wound wire which acts a an electrically short monopole. It is inductively cou- pled to the RF output through L1 and T1. When Unit B is turned on, it transmits on 49.405 MHz. This frequency again serves as both the transmit carrier and the receiver local oscillator. This signal provides low side injection to produce a 455 KHz frequency from on incoming 49.86MHz signal. Energy is supplied by a 9 Volt battery. GROUND CIRCUITRY No external ground connection is provided. The unit relies on the ground track of the printed circuit board. APPLICANT: WINATION TECHNOLOGY MFG. LTD. FCC ID: N57RY-1352 REPORT #: T:\CUS\W\WINATION\205ZH0\205ZH0.RPT P…

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