Anlaysis Report

FCC ID: PQN60901TX2G4

RF Exposure Info

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FCCID_4461988

Analysis Report

The Equipment Under Test (EUT), is a portable 2.4GHz Transceiver (Controller Unit) for a
RC car. The sample supplied operated on 61 channels, normally at 2412 - 2472 MHz for
transmitter and receiver. The channels are separated by 1 MHz spacing.

The EUT is powered by 2 x 1.5V AAA batteries. After switch on the EUT, the car will be
moved forward or backward and turned left and right based on the switches pressed in
the controller.

Antenna Type: Internal, Integral antenna
Antenna Gain: 0dBi
Nominal rated field strength is 102.3 dBμV/m at 3m
Maximum allowed production tolerance: 100 - 103dBμV/m at 3m

According to the KDB 447498:

Based on the Maximum allowed field strength of production tolerance was 103dBμV/m
at 3m in frequency 2.472GHz.

Thus, it below calculated field strength according to minimum SAR exclusion threshold
level as follows:

The worst case of SAR Exclusion Threshold Level:
= 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz)
= 3.0 * 5 / sqrt (2.483.5) mW
= 9.52 mW

According to the KDB 412172 D01:
EIRP = [(FS*D) ^2*1000 / 30]

Calculated Field Strength for 9.52mW is 105dBuV/m @3m

Since maximum field strength plus production tolerance < = 105dBuV/m @3m and
antenna gain is > = 0.0dBi, it is concluded that maximum Conducted Power and Field
Strength are well below the SAR Exclusion threshold level, so the EUT is considered to
comply with SAR requirement without testing.

Document Created: 2019-09-16 09:20:36
Document Modified: 2019-09-16 09:20:36

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