Analysis Report

FCC ID: 2AE67-2104A

RF Exposure Info

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FCCID_3939026

INTERTEK TESTING SERVICES

Analysis Report

The equipment under test (EUT) is a transmitter for a Grand Prix Racing Set
(2-Pack) operating at 27.145 MHz which is controlled by a crystal. The EUT is
powered by two 1.5V AA batteries. For more detail information pls. refer to the
user manual.

Antenna Type: Integral antenna
Antenna Gain: 0dBi
The nominal conducted output power specified: -25.0dBm (+/- 3dB)
The nominal radiated output power (e.r.p) specified: -27.15dBm (+/- 3dB)
Modulation Type: Pulse modulation

According to the KDB 447498:

The worst-case peak radiated emission for the EUT is 69.3dBuV/m at 3m
in the frequency 27.145MHz
The EIRP = [(FS*D) ^2 / 30] mW= -25.93dBm
The ERP = EIRP – 2.15 = -28.08 dBm
which is within the production variation.

The maximun conducted output power specified is -22dBm =0.0063mW
The source- based time-averaging conducted output power
= 0.0063* Duty Cycle mW < 0.0063mW (Duty Cycle<100%)

The SAR Exclusion Threshold Level for 27.145MHz when the minimum
test separation distance is < 50mm:
= 474 * [1 + log(100/f(MHz)]/2
= 371.2 mW

Since the source-based time-averaging conducted output power is well
below the SAR low threshold level, so the EUT is considered to comply
with SAR requirement without testing.

Transmitter Duty Cycle Calculation
The duration of one cycle = 17.3043ms
Effective period of the cycle = 1.4348ms x 4 + 478.3µs x 10 =10.5222ms
DC =10.5222ms / 17.3043ms =0.6081 or 60.81%

FCC ID: 2AE67-2104A

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Document Created: 2018-07-14 15:39:18
Document Modified: 2018-07-14 15:39:18

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