AEK980249R

STATEMENT OF MICHAEL A. NICOLAY In Connection With APPLICATION FOR CERTIFICATION Radi-Can R/C RECEIVER FCC ID: AEK980249R I am an Engineer, an employee in the firm of Carl T. Jones Corporation, with offices located in Springfield, Virginia. My education and experience are a matter of record with the Federal Communications Commission. All of the measurements contained in this test report were performed by me or under my supervision, and I attest to the accuracy of each. I submit that, to the best of my knowledge, the test sample meets the technical standards set forth in the Commission's Part 15 Rules and Regulations. DATED: October 21, 1998 Michael A. Nicolay Carl T. Jones Corporation 7901 Yarnwood Court Springfield, VA 22153 (703) 569-7704 [email protected]

STATEMENT OF MICHAEL A. NICOLAY In Connection With APPLICATION FOR CERTIFICATION Radi-Can R/C RECEIVER FCC ID: AEK980249R I am an Engineer, an employee in the firm of Carl T. Jones Corporation, with offices located in Springfield, Virginia. My education and experience are a matter of record with the Federal Communications Commission. All of the measurements contained in this test report were performed by me or under my supervision, and I attest to the accuracy of each. I submit that, to the best of my knowledge, the test sample meets the technical standards set forth in the Commission's Part 15 Rules and Regulations. DATED: October 21, 1998 Michael A. Nicolay Carl T. Jones Corporation 7901 Yarnwood Court Springfield, VA 22153 (703) 569-7704 [email protected]

EXPOSITORY STATEMENT/DESCRIPTION FCC ID:AEK980249R The superregenerative receiver is comprised of the superregenerator oscillator circuit, which includes Q1, and its associated passive components, and the processing large-scale-integrated (LSI) circuit, IC1-RX2. The relaxation oscillator received the RF signal from the transmitter then supplies the digital control signals to the processing IC (IC1). The processing IC1 then conditions the control signals for input to the comparitors that control the R/C receiver’s two motors, M1 and M2. These motors control the forward/reverse, left/right functions of the receiver. The comparitors are comprised of Q4 through Q9 for motor #1, and Q10 through Q15 for motor #2. See TY-X2255 Block Diagram and Schematic. The receiver is powered by 2 AA 1.5 VDC batteries. No external grounding is used or required. The only tuning required is to tune the relaxation oscillator, L2, to receive the RF from its associated transmitter, and is performed at the manufacturing facility by qualified technicians.

FCC ID:AEK980249R 1 APPLICATION FOR CERTIFICATION ON BEHALF OF TAIYO KOGYO Co. LTD. Radi-Can R/C RECEIVER FCC ID:AEK980249R October 21, 1998 I. INTRODUCTION This measurement report is submitted in support of an Application for Certification in accordance with Part 2, Subpart J and Part 15, Subpart B (effective 6/23/89) of the Federal Communications Commission's Rules and Regulations. The equipment under test (EUT) is a superregenerative receiver which decodes commands from a separate handheld transmitter. This receiver operates at a fixed frequency within the band from 49.82 to 49.90 MHz and is powered by two AA 1.5 volt batteries. The EUT is identified as the Radi-Can Receiver (FCC ID:AEK980249R). Operation under the transition provisions of Paragraph 15.37 is not requested for this device. The measurements contained in this report demonstrate compliance with the limitations in effect since 6/23/89. II. INFORMATION REQUIRED FOR CERTIFICATION Paragraph(s) (1) 2.1033(a)This application for certification is filed on FCC Form 731 with all questions answered. An application fee of $365 is attached. 2.1033(b)(1)The full name and mailing address of the manufacturer of the device and applicant for certification is: Taiyo Kogyo Co., Ltd. No. 1-23-17, Higashiyotsugi Katsushika-ku, Tokyo Japan FCC ID:AEK980249R 2 (2)The FCC Identifier of the device is AEK980249R. (3)A copy of the installation and operating instructions to be furnished to the user, or a draft copy of such instructions, is included in this exhibits section of this application. (4)This device is a superregenerative receiver powered by two AA 1.5 volt batteries. It is designed to operate on a fixed frequency in the band 49.82 to 49.90 MHz. (5)A block diagram of the device is included in the exhibits section of this application. Schematics are also provided in the exhibits section of this application. No IFs are involved. (6)A report of measurements is included with this report. (7)Photographs of this device showing its general appearance, the FCC Label and its placement are included in the exhibits section of this application. (8)This equipment is a stand-alone unit. No peripherals or accessories are involved. (9)Certification under the transition provisions of Paragraph 15.37 is not being requested for this device. (10) N/A. III. GENERAL TEST CONDITIONS AND PROCEDURES Measurement procedures were used as outlined in MP-1, as specified in Part 15.31, except as noted herein. The open field tests were performed on a three-meter range maintained by Carl T. Jones Corporation at the Springfield facility. Complete description and measurement data for the site have been placed on file with the Commission. Carl T. Jones Corporation is listed by the FCC as a facility available to do measurement work for others on a contract basis. Prior to open-field testing, the equipment was placed in a shielded enclosure and scanned at a distance of 1 meter to determine its emission characteristics. IV. RADIATED EMISSION MEASUREMENTS The receiver was assembled on a rotatable wooden test stand approximately one meter in height. The receiver's antenna was fully extended. Because of the superregenerative nature of the receiver, an FCC ID:AEK980249R 3 unmodulated RF signal was transmitted to it during testing in order to insure proper functionality. The emission spectrum was examined from 30 MHz to 1000 MHz using a Hewlett-Packard 8568B spectrum analyzer and Compliance Design "Roberts" tuned dipole antennas. At each emission frequency, the EUT was rotated 360 degrees, and the antenna was raised and lowered from one to four meters to determine the maximum emission levels. Measurements were taken using both horizontal and vertical antenna polarizations. The spectrum analyzer's 6 dB bandwidth was set to 100 kHz. The analyzer was operated in the CISPR quasi-peak detection mode for measurements of all emissions less than 1000 MHz. No post-detector video filters were used. The EUT was investigated in three orthogonal planes. There were no detectable emissions observed during the EUT's initial scan. Test Results: Because there were no detectable emissions observed during the 1-meter initial scan, the EUT was not taken to the open-area-test-site. See attached spectral plots. The EUT complied with Part 15 FCC Limits. Note: SEE ENCLOSED INITIAL FREQUENCY SCAN SPECTRAL PLOTS. Six spectral plots are included. The spectral plots are: 1. Spectrum at f o , CW carrier on, EUT on (RBW = 300Hz) 2. Spectrum at f o , CW carrier on, EUT on (RBW = 3kHz) 3. Spectrum at f o , CW carrier on, EUT on (RBW=10kHz) 4. Spectrum at 2 f o , CW carrier on, EUT on (RBW = 10kHz) 5. Spectrum at 3 f o , CW carrier on, EUT on (RBW = 10kHz) 6. Spectrum through 10 f o , CW carrier on, EUT on (RBW = 100kHz) The actual field intensity in decibels above one microvolt per meter (dB μ V/m) is determine by FCC ID:AEK980249R 4 algebraically adding the measured level in dB μ V, the antenna factor (dB), and the cable loss (dB) at the appropriate frequency. FI a (dB μ V/m) = FI m (dB μ V) + AF (dB) + CL (dB) FI a = Actual Field Intensity FI m = Measured Field Intensity AF = Antenna Factor CL = Cable Loss As an example calculation, assume a particular device emits a signal with a frequency of 49.96 MHz. The received signal level is measured as 42.0 dB μ V. The total attenuation factor (antenna factor plus cable loss) for 49.96 MHz is 4.7 dB. The actual radiated field is calculated as follows: 42 dB μ V + 4.7 = 46.7 dB μ V/m In no case did the radiated emissions exceed the limits specified in Paragraph 15.109(a) of the Commission's Rules. V. POWER LINE CONDUCTED EMISSIONS MEASUREMENTS Measurements of the power line conducted emissions were not performed since the EUT has no means for connection to the public utility power grid.

TABLE 1 FIELD STRENGTH RADIATED EMISSIONS DATA SHEET ANTENNA FACTORFCC EMISSIONANTENNAEMISSIONANDEMISSIONLIMIT FREQUENCY POLARITYLEVELCABLE LOSSLEVEL(3 METERS) (MHZ)(H,V)(dBuV)(dB)(dBuV/m)(dBuV/m) Note: No detectable emissions were observed during the 1 meter scan, therefore the EUT was not taken to the open-area-test-site. See attached spectral plots. CLIENT:TAIYO KOGYO FCC ID:AEK980249R MODEL:Radi-Can TEST DATE:10/21/98 TEST ENGINEER:Michael A. Nicolay

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