P8OGWT-4AR/C Model Tramsmitter

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 April 10, 2002 RE: Grand Wing Servo-Tech Co., Ltd FCC ID: P8OGWT-4A I have a few comments on this Application. 1.) The Manual quotes frequency bands of 35, 36, 40 and 41 MHz in addition to 72 MHz. Only those frequencies listed in 95.623 are valid. Please explain. 2.) Is the only operating frequency this device will use 72.47MHz? Or should the entire band of those frequencies quoted in 95.623 be listed? If so, please supply corrected Form 731. 3.) Manual indicates RF Pout of 350mW but test data supplied shows only 40.47mW. Requested power on 731 is 40Mw. Note the max listed in 95.639. Please review. 4.) Radiated Pout is shown using a conversion from field strength to EIRP. Please note power in this band is typically quoted as Conducted. Please confirm your request for 40mW EIRP using the substitution method. 5.) Please provide emission designator and justification as required by Part 2 of the Rules for all transmitters operating in the Licensed services. 6.) A parts list and tune up procedure is required for any Licensed service. Please supply. Modify the Confidentiality request as necessary. 7.) There appears to be multiple schematics for the transmitter – I am guessing one for each band. Please provide only those schematics as required for this operating frequency. Thank you for your cooperation. William H. Graff President and Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 May 3, 2002 RE: Grand Wing Servo-Tech Co., Ltd. FCC ID: P8OGWT-4A I have a few final comments on this Application. 1.) Please provide corrected Form 731 listing conducted RF Pout as found in revised Test Report. 2.) Please provide corrected Form 731 listing Emission Designator. See 2.201 for guidance. William H. Graff President and Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

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FCC ID: P8OGWT-4A ADT No.901206R01 Operational Description This device is a model controller, only one channel is provided and it is battery powered. The whip antenna should be fully extended during operating.

FCC ID: P8OGWT-4A Report No.: RF901206R01 1 Issued: March 7, 2002 FCC TEST REPORT REPORT NO.: RF901206R01 MODEL NO.: GWT-4A RECEIVED: Dec. 6, 2001 TESTED: Feb. 21 ~ Feb. 27, 2002 APPLICANT: GRAND WING SERVEO-TECH CO., LTD. ADDRESS: 4F, No. 183, SEC 1., TA-TUNG RD., HIS CHIH CHEN, TAIPEI HSIEN 221 , TAIWAN, R.O.C ISSUED BY: Advance Data Technology Corporation LAB LOCATION: 47 14th Lin, Chia Pau Tsuen, Linkou Hsiang, Taipei, Taiwan, R.O.C. This test report consists of 23 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product endorsement by NVLAP or any U.S. government agencies. The test results in the report only apply to the tested sample. Lab Code: 200102-0 0528 ILAC MRA FCC ID: P8OGWT-4A Report No.: RF901206R01 2 Issued: March 7, 2002 Table of Contents 1CERTIFICATION ......................................................................................................... 3 2SUMMARY OF TEST RESULTS................................................................................. 4 3GENERAL INFORMATION ......................................................................................... 5 3.1GENERAL DESCRIPTION OF EUT ........................................................................... 5 3.2DESCRIPTION OF TEST MODES ............................................................................. 6 3.3GENERAL DESCRIPTION OF APPLIED STANDARDS............................................. 6 3.4DESCRIPTION OF SUPPORT UNITS........................................................................ 6 4TEST PROCEDURE AND RESULT............................................................................ 7 4.1RADIATED EMISSIONS MEASUREMENT................................................................. 7 4.1.1LIMITS OF FUNDAMENTAL FREQUENCY MEASUREMENT................................... 7 4.1.2LIMITS OF UNWANTED RADIATED EMISSIONS MEASUREMENT ........................ 7 4.1.3TEST INSTRUMENT................................................................................................... 8 4.1.4TEST PROCEDURE ................................................................................................... 9 4.1.5TEST SETUP ............................................................................................................ 10 4.1.6EUT OPERATING CONDITION ................................................................................ 10 4.1.7TEST RESULT .......................................................................................................... 11 4.2FREQUENCY STABILITY ......................................................................................... 12 4.2.1LIMIT OF FREQUENCY STABILITY MEASUREMENT ............................................ 12 4.2.2TEST INSTRUMENT................................................................................................. 12 4.2.3TEST PROCEDURE ................................................................................................. 13 4.2.4TEST SETUP ............................................................................................................ 13 4.2.5EUT OPERATING CONDITION ................................................................................ 13 4.2.6TEST RESULT .......................................................................................................... 14 4.3EMISSION BANDWIDTH .......................................................................................... 15 4.3.1LIMIT OF FREQUENCY STABILITY MEASUREMENT ............................................ 15 4.3.2TEST INSTRUMENT................................................................................................. 15 4.3.3TEST PROCEDURE ................................................................................................. 16 4.3.4TEST SETUP ............................................................................................................ 16 4.3.5EUT OPERATING CONDITION ................................................................................ 16 4.3.6TEST RESULT .......................................................................................................... 17 4.4MODULATION CHARACTERISTICS........................................................................ 19 4.5CRYSTAL ACCESS RESTRICTIONS....................................................................... 21 5PHOTOGRAPHS OF THE TEST CONFIGURATION ............................................... 22 6INFORMATION ON THE TESTING LABORATORIES.............................................. 23 FCC ID: P8OGWT-4A Report No.: RF901206R01 3 Issued: March 7, 2002 1 CERTIFICATION PRODUCT : Remote Control BRAND NAME : GWS MODEL NO. : GWT-4A APPLICANT : GRAND WING SERVO-TECH CO., LTD. STANDARDS : 47 CFR Part 95, Subpart C 47 CFR Part 95, Subpart E 47 CFR Part 2, Subpart J EIA/TIA 603 We, Advance Data Technology Corporation , hereby certify that one sample of the designation has been tested in our facility from Feb. 21, 2002 to Feb. 27, 2002. The test record, data evaluation and Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample's EMC characteristics under the conditions herein specified. FCC ID: P8OGWT-4A Report No.: RF901206R01 4 Issued: March 7, 2002 2 SUMMARY OF TEST RESULTS The EUT has been tested according to the following specifications: APPLIED STANDARD: 47 CFR Part 95 STANDARD PARAGRAPH TEST TYPERESULTREMARK 95.210 (a) 95.635 Radiated Emission TestPASS Meet the requirement of limit Minimum passing margin is –1.12dBm at 652.23MHz 95.623 (c)Frequency Stability TestPASSMeet the requirement of limit 95.633 (b)Emission Bandwidth TestPASSMeet the requirement of limit 95.631 (b)Modulation Characteristics TestPASS Meet the requirement of limit 95.651Crystal Access Restrictions TestPAS…

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FCC ID: P8OGWT-4A Report No.: RF901206R01 23 Issued: March 7, 2002 5 PHOTOGRAPHS OF THE TEST CONFIGURATION RADIATED EMISSION TEST