RF Exposure

FCC ID: POD-GMRS25

RF Exposure Info

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FCCID_4088286

Channel List:
CH. No CH. Freq Power CH. No CH. Freq Power
1 462.5625 13 462.6750
2 462.5875 14 462.7000 5W/25W
3 462.6125 15 462.7250
4 462.6375 5W 16 467.5500
5 462.6625 17 467.5750
6 462.6875 18 467.6000
7 462.7125 19 467.6250
5W/25W
8 462.5500 20 467.6500
9 462.5750 21 467.6750
10 462.6000 5W/25W 22 467.7000
11 462.6250 23 467.7250
12 462.6500

3. RF EXPOSURE MEASUREMENT
3.1 INTRODUCTION
Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be

evaluated based on the MPE limits adopted by the FCC for electric and magnetic

field strength and/or power density, as appropriate, since exposures are assumed

to occur at distances of 20 cm or more from persons.

The 1992 ANSI/IEEE standard (See Listed limit table) specifies a minimum

separation distance of 20 cm for performing reliable field measurements to

determine adherence to MPE limits.

If the minimum separation distance between a transmitter and nearby persons is

more than 20 cm under normal operating conditions, compliance with MPE

limits may be determined at such distance from the transmitter. When applicable,

operation instructions and prominent warning labels may be used to alert the

exposed persons to maintain a specified distance from the transmitter or to limit

their exposure durations and usage conditions to ensure compliance.

3.2 FCC LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE)
LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE
Frequency Magnetic Field Power Density Averaging Time
E-field Strength (E)
Range Strength (H) (S) |E|2, |H|2 or S
(V/m)
(MHz) (A/m) (mW/cm2) (Minutes)
0.3 -- 1.34 614 1.63 (100)* 30
1.34 -- 30 824/f 2.19/f (180/f2)* 30
30 -- 300 27.5 0.073 0.2 30
300 -- 1500 -- -- f/1500 30
1500 -- 100,000 -- -- 1.0 30

*Note:

1. f= Frequency in MHz * Plane-wave Equivalent Power Density
2.The averaging time for General Population/Uncontrolled exposure to fixed
transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091
and 2.1093 on source-based time-averaging requirement for mobile and portable
transmitters.

4. CLASSIFICATION OF THE ASSESSMENT METHODS

According to user manual, The antenna of the product, under normal use condition is

at least 44.7 cm away from the body of the user. Warning statement to the user for

keeping at least 44.7 cm separation distance and the prohibition of operating to a

person has been printed on the user’s manual. So, this product under normal use is

located on electromagnetic far field between the human body.
S=PG/4πR²
Where:
S=power density
P=power input to antenna

G=power gain of the antenna in the direction of interest relative to an isotropic radiator
R=distance to the center of radiation of the antenna

5. EUT OPERATION CONDITION

Make the EUT to transmit at channel 4 , channel 11 and channel 19 individually.

6. TEST RESULTS
Note: report the worst result in this part

Antenna Gain=0dBi (Numeric 1.0), π=3.141, Duty cycle=50%

Output Output Correct Power Power Density
Frequency Result
Power Power Power Density Limit

MHz dBm mW mW mW/cm2 mW/cm2 Pass/Fail

467.6250 41.92 15600 7800 0.311 0.312 Pass

Note:
1.The output power is refer to HK1811091545E.
2.Correct Power=Output Power*Duty cycle.
3.According to the user manual, the minimum separate distance which used for MPE
calculate is 44.7cm.

Document Created: 2019-04-03 09:57:04
Document Modified: 2019-04-03 09:57:04

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