Futurecom Systems Group ULC DVRSUHF User Manual

Product Safety and RF Energy Exposure Booklet for

Digital Vehicular Repeater Systems (DVRS)

ATTENTION!

Before using this equipment, please read this booklet which contains

important operating instructions for safe usage, RF energy control and

compliance with exposure limits.

8F083X03 Rev. 4.1

8F083X03 Rev 4.1

RF Exposure

ATTENTION!

Changes or modifications not expressly approved by Futurecom Systems Group Inc. could void
the User’s authority to operate the equipment.

ATTENTION!
This radio is intended for use in occupational / controlled conditions, where users have full
knowledge of their exposure and can exercise control over their exposure to meet FCC
limits. This radio device is NOT authorized for general population, consumer, or any other
use.

If this vehicular repeater is used in combination with a separate mobile radio transmitter, it is the
responsibility of the Repeater Operator to ensure that Maximum Permissible Exposure (MPE)
limits are observed at all times during repeater transmissions. The Repeater operator must ensure
at all times that no person comes within the MPE distance from the vehicle body to ensure
compliance with the FCC’s RF energy exposure limits for the general population.
The minimum lateral distance between all possible personnel and the body of the DVRS equipped

vehicle must be as specified in Table 1 (Stand-alone DVR) and Table 2 (DVR interfaced to a

Mobile Radio i.e. DVRS).
Failure to observe the MPE distance exclusion area around the antenna may expose persons
within this area to RF energy above the FCC exposure limit for bystanders (general population).

Stand Alone DVR (20W) Recommended Lateral Distance from Antenna

VHF 82cm (50:50 Tx duty)
UHF 403-512MHz 70cm (50:50 Tx duty)
700MHz 73cm
800MHz 76cm

Table 1 Recommended Lateral Distance - Stand Alone DVR

Mobile Radio Rated Power Recommended Lateral Distance from Vehicle Body

DVRS with <7 Watt Mobile Radio 20 cm
DVRS with 7 to 15 Watt Mobile Radio 30 cm
DVRS with 16 to 39 Watt Mobile Radio 60 cm
DVRS with 40 to 100 Watt Mobile Radio 90 cm

Table 2 Recommended Lateral Distance – DVRS (DVR interfaced to a Mobile Radio)

IMPORTANT

The maximum allowed gain of the λ/4 omni-directional antenna for the Mobexcom P25 DVR
Repeater is Unity (0dBd).

DVRS - Product Safety and RF Energy Exposure Booklet Page 2 of 8

8F083X03 Rev 4.1

RF Exposure Label

The RF Exposure Label should be affixed in the vehicle beside the mobile radio control head.
The label should be in the direct view of the Repeater operator. The label is supplied with the
Mobexcom P25 DVR Repeater.

FCC Label

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:

1) This device may not cause harmful interference, and

2) This device must accept any interference received,
including interference that may cause undesired
operation.

DVRS - Product Safety and RF Energy Exposure Booklet Page 3 of 8