WKN-SKY4032.4GHz TRANSMITTER

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized changes and modifications to this equipment. Such changes and modifications could void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help.

RC Model Fun Ltd.
Date:October 24,2011 To: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD FCC ID: WKN-SKY403 To Whom It May Concern: This letter is to ascertain that RC Model Fun Ltd. Product sky403 has been the units used for conducting FCC compliance testing, the DoC part will be tested by FCC recognized test lab. The Doc test report Number is:STS110901F1. If you have any question or concerns, pls. contact us. Sincerely, PengXinrong (General Manager) RC Model Fun Ltd No.61,Tingkeng Rd, Tingshan, Houjie, Dongguan, Guangdong,China

RC Model Fun Ltd. FCC ID: WKN-SKY403 POWER OF ATTORNEY October 19, 2011 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, RC Model Fun Ltd. hereby authorize Shenzhen Super Test Service Technology Co., Ltd. (Terry YANG/ Manager) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Shenzhen Super Test Service Technology Co., Ltd. (Terry YANG/ Manager) on our behalf shall have the same effect as acts of our own. This authorization expires onNovember 20, 2011. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, RC Model Fun Ltd. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Peng Xinrong ( General Manager) RC Model Fun Ltd. October 19, 2011

FCC ID: WKN-SKY403Report No.: STS110901F2 Page 33 of 40 FRONT VIEW OF SAMPLE BACK VIEW OF THE TRANSMITTER FCC ID: WKN-SKY403Report No.: STS110901F2 Page 34 of 40 UP VIEW OF THE TRANSMITTER DOWN VIEW OF THE TRANSMITTER FCC ID: WKN-SKY403Report No.: STS110901F2 Page 35 of 40 LEFT VIEW OF THE TRANSMITTER RIGHT VIEW OF THE TRANSMITTER

FCC ID: WKN-SKY403Report No.: STS110901F2 Page 36 of 40 INTERNAL PHOTO OF THE EUT – 1 INTERNAL PHOTO OF THE EUT - 2 FCC ID: WKN-SKY403Report No.: STS110901F2 Page 37 of 40 INTERNAL PHOTO OF THE EUT - 3 INTERNAL PHOTO OF THE EUT -4 FCC ID: WKN-SKY403Report No.: STS110901F2 Page 38 of 40 INTERNAL PHOTO OF THE EUT -5 INTERNAL PHOTO OF THE EUT -6 FCC ID: WKN-SKY403Report No.: STS110901F2 Page 39 of 40 INTERNAL PHOTO OF THE EUT -7 INTERNAL PHOTO OF THE EUT -8 FCC ID: WKN-SKY403Report No.: STS110901F2 Page 40 of 40 INTERNAL PHOTO OF THE EUT -9 ------END OF REPORT------

Operation Deseription Product2.4GHz Transmitter Power supplyDC 12V by battery Frequency range2405～2478MHZ ModulationMSK Channel Number75 Maximum power13.73dBm

序 号 名称品名规格 封装位置 用 量 备注 1 403-A PCB1 2电阻0R1206R3,R4,R5,R8,R255 3电阻100R0805R14,R152 4电阻1K0805 R6,R16,R17,R18,R19,R20,R21,R22, R23,R24,R26 11 5电阻10K0805R7,R9,R10,R11,R12,R136 6电阻5.6K(1%)0805R21 7电阻8.2K(1%)0805R11 8电容104(0.1uf) 0805C2,C42 9电容10UF0805C31 10胆电容22UF/16V1210C11 11二极管IN58191808D12 12稳压管6221(3.3V) SOT-23U31 13稳压管78M05TO225U11 14晶体8MX21 15ICMCUTQFP32U21 16 模块 CC2500 1 序 号 名称品名规格 封装位置 用 量 备注 403-A SKD贴片后1 8P开关1 3P座子充电器用2 火牛端子1 线连火牛端子2 跳线3 序 号 名称品名规格 封装位置 用 量 备注 403-B PCB1 开关1 3P线1 序 号 名称品名规格 封装位置 用 量 备注 403-C PCB1 LED（红）1 LED（黄）1 LED（绿）3 6P线1 认证BOM表 制单日期：2011.8.11

11 22 33 44 55 66 D D C C B B A A GND 123 SWITCH D15819 Vin 1 GND 2 Vout 3 U178M05 C2104 VCC GND 1 VOUT 2 VIN 3 U2 3.3 C147uF C310uF DVDD VIN POWER BAT 12V 12 DC IN SCLK 1 SO(GDO1) 2 GDO2 3 DVDD 4 DCOUPL 5 GDO0 6 CSn 7 XTAL1 8 AVDD 9 XTAL2 10 AVDD 11 RF_P 12 RF_N 13 AVDD 14 AVDD 15 GND 16 RBIAS 17 DGUIRD 18 GND 19 SI 20 U24CC2500 123 456 U25RF-AMP 1234 5 6 7 8 9101112 13 14 15 16 U26 RDA T212 C241104 C242104 C243104 C244104C245104 C24610P C24710P C248 100P C249 100P C2501P C2511P L2401.2NH L2411.2NH R24056K R241R242R243 R245 0 C252104 C253 104 C254103 C255680P C256680P C257103 C258820P C259 103 C260103 C261100P C2621P C2635.6P C264 ANT 3.3V 3.3V 3.3V 3.3V C24010UF X226M 3.3V L2421UH 3.3 C26510UF LAN_ENCSNGD0GD2MISOSCKMOSI CSN GD0 GD2MISOSCK MOSI LAN_EN TX_EN TX_EN 2.4G MODULE 123456789 10 3.3V C4104 123 CH1 123 CH2 123 CH3 123 CH4 123 CH5 12345678 16151413121110 9 SW LED1 RED LED2 YELLOW LED3 GREEN LED4 GREEN LED5 GREEN 12345678910 2.4G X4 8M R151K R141K R131K R121K R111K R9 0R PC6PC5PC7PG0PG1 VDDVDD R40RR80R R50R R30R DVDD VCC VCC SKY-403(REV1.0) RESET 1 XI/PA1 2 XO/PA2 3 VSS 4 VSS 5 Vcap 6 VDD 7 VDD 8 PA4 9 PA5 10 PA6 11 AVDD 12 AGND 13 AIN7/PB7 14 AIN6/PB6 15 AIN5/PB5(SDA) 16 AIN4/PB4(SCL) 17 AIN3/PB3 18 AIN2/PB2 19 AIN1/PB1 20 AIN0/PB0 21 AIN9/PE6 22 PE5/SS 23 PC1 24 PC2 25 PC3 26 PC5/SCK 27 GND 28 VDD 29 PC6/MOSI 30 PC7/MISO 31 PG0 32 PG1 33 PE2/SDA 34 PE1/SCL 35 PE0 36 PD0 37 PD1 38 PD2 39 PD3 40 PD4 41 PD5/TX 42 PD6/RX 43 PD7 44 U4MCU 123 CH6 12 IDLE 12 GEAR 12 PPM R2 5.6K/1% R1 8.2K/1% VIN C8104 C7 10uF GND 1 VOUT 2 VIN 3 U3 3.3 C510uF C6104 VDD VDD VDD DVDD R60R DVDD DVDD R60R DVDD DVDD R70R DVDD DVDD PD0PE0 PD0PE0 PC5 PC6 PC7 PG0 PG1 DVDD GND DVDD GNDDVDD DVDD R10 1K DVDDDVDDDVDDDVDDDVDDDVDD 1234123 DVDDGNDPD1RST RST PD5PD6 PD5PD6 MCU

FCC 47 CFR PART 15 SUBPART C TEST REPORT For Applicant : RC Model Fun Ltd. Address : No.61,Tingkeng Rd, Tingshan, Houjie, Dongguan, Guangdong, China Product Name : 2.4GHz Transmitter Model Name : sky403, SKYXXX Brand Name : SKYARTEC FCC ID : WKN-SKY403 Report No. : STS110901F2 Date of Issue : October. 17, 2011 Issued by : Shenzhen Super Test Service Technology Co., Ltd. Address : No.5, Langshan 2nd Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China Tel : 86-755-2795 8522 Fax : 86-755-2795 8022 The report consists 40 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 STS. The test results in the report only apply to the tested sample. The test report shall be invalid without all thesignatures of testing engineers, reviewer and approver. FCC ID: WKN-SKY403Report No.: STS110901F2 Page 2 of 40 TABLE OF CONTENTS 1.VERIFICATION OF CONFORMITY.........................................................................................................................3 2.GENERAL INFORMATION.......................................................................................................................................4 2.1 Product Information.....................................................................................................................................................4 2.2 Objective.......................................................................................................................................................................5 2.3 Test Standards and Results.......................................................................................................................................5 2.4 Environmental Conditions..........................................................................................................................................5 3.TEST FACILITY...........................................................................................................................................................6 4.TEST EQUIPMENT LIST...........................................................................................................................................8 5.47 CFR Part 15 C 15.247 Requirements...............................................................................................................9 5.1 6dB Bandwidth..........................................................................................................................................................9 5.1.1Definition.................................................................................................................................................................9 5.1.2Test Description......................................................................................................................................................9 5.1.3Test Result..............................................................................................................................................................9 5.2 Peak Output Power..................................................................................................................................................10 5.2.1Definition...............................................................................................................................................................12 5.2.2Test Description....................................................................................................................................................12 5.2.3Test Result............................................................................................................................................................12 5.3 Conducted Spurious Emission...........................................................................................................................12 5.3.1Definition...............................................................................................................................................................14 5.3.2Test Description....................................................................................................................................................14 5.3.3Test Result............................................................................................................................................................14 5.4 Band Edge................................................................................................................................................................16 5.4.1Definition...............................................................................................................................................................16 5.4.2Test Description....................................................................................................................................................16 5.4.3Test Result............................................................................................................................................................17 5.5 Power Spectral Density (PSD).............................................................................................................................20 5.5.1Definition ...............................................................................................................................................................20 5.5.2Test Description....................................................................................................................................................20 5.5.3Test Result............................................................................................................................................................20 5.6 …

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FCC ID: WKN-SKY403Report No.: STS110901F2 Page 31 of 40 RE TEST SETUP