OTM-87101-27MTXR/C Mega Truck

1 1 2 2 3 3 4 4 DD CC BB AA A NTENNA V CC 27.145MHZ

INTERTEK TESTING SERVICE Report No.: 14051140HKG-001 Equipment Photographs Model : 87101 (External) FCC ID: OTM-87101-27MTX

FCC ID: OTM-87101-27MTX Model: 87111 (Transmitter portion) Technical Description of Transmitter The transmitter operates at 27.145 MHz, and controls the corresponding receiver to move forward, backward, left and right. The circuit of the transmitter comprises of, 1. An Encoding circuit Consisting: U1 (PT977) 2. Control buttons Consisting: S1, S2 3. A RF Oscillator (27.145MHz) Consisting: Y1, Q1 4. A Filter Network Consisting: T1, L1, C1, C2, C3 5. A RF Modulator and Amplifier Consisting: Q2 6. A Power Supply Consisting: 4.5VDC (3 X “1.5V” AA size batteries) Antenna Gain: 0dBi Nominal rated field strength: 67.5dBμV/m at 3m Maximum allowed field strength of production tolerance: +/- 3dB The transmitter uses an external, detachable dedicated antenna

Analysis Report Report No.: 14051140HKG-001 The Equipment Under Test (EUT) is a portable transmitter of a RC Car operating at 27.145 MHz as dictated by a crystal. The EUT is powered by a 4.5 V DC source (3 x 1.5V AA size batteries). The EUT has a left / right joystick and a forward / backward joystick. After switching ON the EUT and the receiver of the RC Car, activating the joysticks on the EUT can control the receiver moving forward, backward left and right directions. Antenna Type: External, detachable dedicated antenna Antenna Gain: 0dBi Nominal rated field strength: 67.5dBμV/m at 3m Maximum allowed field strength of production tolerance: +/- 3dB According to the KDB 447498: Based on the Maximum allowed field strength of production tolerance was 70.5dBμV/m at 3m in frequency 27.145MHz, thus; The EIRP = [(FS*D) ^2*1000 / 30] = 0.00337mW Conducted power = Radiated Power (EIRP) – Antenna Gain So; Conducted Power = 0.00337mW. The SAR Exclusion Threshold Level for 27.145MHz when the minimum test separation distance is < 50mm: = [474 * (1 + log100/f(MHz))]/2 = 371.2mW Since the above conducted output power is well below the SAR Exclusion threshold level, so the EUT is considered to comply with SAR requirement without testing.

1 1 2 2 3 3 4 4 DD CC BB AA A NTENNA C7 47P C6 47P C5 300P C3 47P L1 6.8uH L2 2.2uH L3 2.2uH R5 22K R6 100 R4 150K Y1 27.145MHz LED 4.5V R2 100R R1 1K C8 103 C10 104P C2 68P T1 15T C1 68P R7 10 C4 103 C9 104 C11 104 1 2 3 4 5 6 78 9 10 11 12 13 14 U1 PT977 D1 NC V DD V DD R3 220K Q1 2712 Q2 2712 S1 S2

INTERTEK TESTING SERVICE Report No: 14051140HKG-001 Configuration Photographs Worst-Case Radiated Emissions (Front View) Model : 87101 FCC ID: OTM-87101-27MTX INTERTEK TESTING SERVICE Report No: 14051140HKG-001 Configuration Photographs Worst-Case Radiated Emissions (Back View) Model : 87101 FCC ID: OTM-87101-27MTX