User's Manual Part 1

TDL 450i Intergrator’s Guide 5
– 15 cm (approximately 6 in) for the TDL 450i radio @ 1 W
• Do not operate the transceiver unless all RF connectors are secure and any open connectors are properly
terminated.
• Avoid contact with the antenna while operating the transceiver.
• Do not operate the transceiver with a damaged antenna. If a damaged antenna comes in contact with
the skin, a minor burn may result.
• Do not operate the equipment near electrical blasting caps or in an explosive atmosphere.
CAUTION – Changes or modifications not expressly approved by the FCC could void the user’s authority to
operate the equipment.
FCC Rules and Regulations
Licensing requirements
It is the responsibility of the owner to comply with applicable rules and regulations concerning the
operation of a radio transmitter. In the United States, the FCC regulates the licensing of this equipment.
Application for a license is made by submitting FCC Form 600 along with evidence of frequency
coordination (if required) and applicable fees. Similar licensing requirements exist worldwide. Penalties for
broadcasting without a license can be severe, and may include the confiscation of your radio.
For more information, contact our customer service department.
WARNING – Always obey local licensing requirements and restrictions. It is illegal to transmit in the United
States while CSMA is turned off. CSMA is not required within the European Union and should be turned off.
Equipment compliances
The radios have been tested and found to comply with Parts 15 and 90 of Title 47 of the Code of Federal
Regulations. They have also been tested and found compliant for type certification and approval in many
other countries worldwide.
For more information concerning our worldwide compliances, contact customer support.
Being part of the RF community
Operation of a licensed radio product makes you a member of the RF community. Be aware that virtually all
frequencies licensed are provided on a shared basis with other users. Each frequency dedicated specifically
to RTK surveying activities has certain restrictions and limitations. For complete information, refer to the
appropriate documentation from the licensing agency in your country of operation, e.g., Part 90, Title 47, of
the Code of Federal Regulations.
Most frequencies sharing data transmissions and voice transmissions give priority to voice users. Be
mindful of the persistent nature of a GPS RTK data transmission and always limit your RF transmission
output power when performing close-in survey situations to avoid interference with co-channel users.
Trimble recommends using the low RF power setting for construction site and other line-of-site surveys
with baselines less than two miles (depending on terrain).
WARNING – If you are in conflict with a co-channel user, select another frequency to avoid formal actions
by government agencies. In most cases, you are required to vacate a frequency upon complaint by a shared
channel voice user.
Most survey operations are itinerant in that the system is moved on a frequent basis. For fixed system