M. Flom Associates, Inc. - Global Compliance Center
Report for Kenwood Communications Corporation
Date of Report: October 30, 2000
FCC ID: ALH29383210
Models: TK-860HG-1 and TK-862HG-1
Environmental Assessment
This document presents an amended environmental assessment for the Kenwood TK-860HG-1 and TK-862HG-1 UHF FM Mobile Transceivers, conducted in accordance with FCC regulations (47 CFR 1.1310) concerning Radiofrequency Radiation Exposure Limits.
Test Report Details
Laboratory: M. Flom Associates, Inc.
Report Number: d00a0060
Client: Kenwood Communications Corporation
EUT Identification: TK-860HG-1 and TK-862HG-1
Description: UHF FM Mobile Transceiver
Report Date: October 30, 2000
Supervised by: Morton Flom, P. Eng.
Equipment Under Test (EUT) Identification
Applicant
Kenwood Communications Corporation
2201 E. Dominguez St
Long Beach, CA 90801-5745
Manufacturer
Kenwood Electronics Technologies PTE Ltd.
1 Ang Mo Kio Street 63
Singapore 569110
Technical Specifications
- FCC ID: ALH29383210
- Model No: TK-860HG-1 and TK-862HG-1
- Description: UHF FM Mobile Transceiver
- Type of Emission: 16K0F3E, 11K0F3E, 16K0F1D, 11K2F1D
- Frequency Range: 450 to 490 MHz
- Power Rating: 10 to 40 Watts (Switchable)
- Modulation: OTHER (checked)
- Antenna: WHIP (checked)
Note: Antenna gain was taken at the upper range of expected gain (0 dBi) and RF Power set to highest nominal power.
Laboratory Accreditation
M. Flom Associates, Inc. is accredited by the American Association for Laboratory Accreditation (A2LA) for technical competence in Electrical (EMC) Testing, as per ISO/IEC Guide 25-1990.
Standard Test Conditions and Engineering Practices
Testing was conducted in accordance with ANSI C63.4-1992/2000. Ambient temperature was maintained between 10°C and 40°C (50°F to 104°F), and humidity between 10% and 90% relative humidity, unless otherwise specified.
The EUT was tuned up according to manufacturer procedures, with external gain controls set to maximum or optimum gain.
Measurement results are reported as worst-case unless otherwise noted.
Environmental Assessment Procedure
Name of Test: Environmental Assessment / R.F. Radiation Exposure
Specification: FCC: 47 CFR 1.1310
Measurement Guide: ANSI/IEEE C95.1 1992
Test Equipment: Narda 8717-1174R Radiation meter, Narda 8761D E-field probe (300 kHz - 3 GHz).
Measurement Procedure:
- Measurements performed using a Narda probe per ANSI/IEEE C95.1.
- Measurement system calibrated per manufacturer procedures.
- EUT antenna placed on a 1m tall table; ground plane used for metal-surface operation.
- Other equipment placed at a distance to minimize interference.
- Minimum safe distance calculated using the formula: Power Density = EIRP / 4πR².
- Worst-case emissions searched by varying probe height (0.2-2m) and horizontal plane (0°-360°) at maximum power.
- Average values calculated for whole body (0.2-2.0m), lower body (0.2-0.8m), and upper body (1.0-2.0m).
RF Radiation Exposure Results
Test Frequency: 450 MHz
Antenna Gain: 0 dBd
Antenna Model: Whip
Rated Probe: Narda 8761D Probe
Limits (47 CFR 1.1310 Table 1, (B))
| Frequency Range | Limit [mW/cm²] |
|---|---|
| 0.3-1.234 MHz | 100 |
| 1.34-30 MHz | (180/f²) |
| 30-300 MHz | 0.2 |
| 300-1500 MHz | f/1500 |
| 1500-100,000 MHz | 1.0 |
Power, Conducted: 20 W (50% Duty Cycle)
Power + Ant. Gain: 20 W
Tested Distance: 0.48 m
Results at Tested Distance
| Probe Height, m | Power Density, mW/cm² |
|---|---|
| 2.0 | 0.06 |
| 1.8 | 0.07 |
| 1.6 | 0.09 |
| 1.4 | 0.13 |
| 1.2 | 0.15 |
| 1.0 | 0.18 |
| 0.8 | 0.1 |
| 0.6 | 0.08 |
| 0.4 | 0.07 |
| 0.2 | 0.06 |
Power Density Calculations
- For whole body: Average of 0.2 to 2.0 m: 0.099 mW/cm²
- For lower body: Average of 0.2 to 0.8 m: 0.078 mW/cm²
- For upper body: Average of 1.0 to 2.0 m: 0.113 mW/cm²
Mandatory Safety Instructions for Installers & Users
General: Use only manufacturer or dealer supplied antennas. Maintain a minimum safe distance of 48 cm from the antenna during transmission.
FCC Standard: The FCC has adopted safety standards for human exposure to RF energy, which are below OSHA limits.
Antenna Mounting: The supplied antenna must not be mounted such that persons can come closer than the minimum safe distance (48 cm) during transmission. Installation must comply with FCC RF Exposure limits and manufacturer requirements.
Vehicle Installation: Antenna can be mounted on a vehicle's metal roof or trunk lid if the minimum safe distance is observed.
Base Station Installation: Antenna should be fixed-mounted on an outdoor permanent structure. RF Exposure compliance must be addressed at installation.
Antenna Substitution: Do not substitute antennas; this may expose persons to harmful RF radiation. Contact the dealer or manufacturer for guidance.
WARNING: Maintain a separation distance of at least 48 cm from the antenna to persons.
End-User Responsibility: Qualified end-users must control bystander exposure to ensure the minimum separation distance is maintained. Operation must satisfy Occupational/Controlled Exposure Environment requirements. Transmit only when persons are at least the minimum distance away. Do not exceed a 50% maximum duty factor over any 30-minute period.
Sincerely,
Joel Berger, Engineer
Kenwood Communications Corp.
Statement of Certification
This is to certify that:
- The application was prepared under the direct supervision of the undersigned.
- Technical data was supplied and taken under the direction and supervision of the undersigned.
- Data was obtained on representative units, randomly selected.
- To the best of the undersigned's knowledge and belief, the facts set forth in the application and accompanying technical data are true and correct.
Certifying Engineer: Morton Flom, P. Eng.
