Uhf Radio Usage - Javad HPT435BT User Manual

Appendix

UHF RADIO USAGE

Many countries require a license for radio users (such as the United States
of America). Be sure you comply with all local laws while operating a
UHF radio.
Surveying in RTK mode has made UHF the most popular choice for com-
munications between base and rover receivers. Know the strengths and
weaknesses of this technology to get the best use out of your receiver.
The quality and strength of the UHF signals translates into range for UHF
communications.
The system's range will greatly depend on the local conditions. Topography,
local communications and even meteorological conditions play a major
role in the possible range of RTK communications.
If needed, use a scanner to find clear channels for communication.
SAFETY WARNINGS
Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Clean only with a damp cloth.
• Do not block any of the ventilation openings. Install in accordance
with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
• Protect the power cord from being walked on or pinched particularly
at plugs, convenience receptacles, and the point where they exit from
the apparatus.
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• Only use attachments/accessories specified by the manufacturer.
• Refer all servicing to qualified service personnel. Servicing is re-
quired when the apparatus has been damaged in any way, such as pow-
er-supply cord or plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, or has been dropped.
• Apparatus shall not be exposed to dripping or splashing and no ob-
jects filled with liquids, shall be placed on the apparatus.
General Warnings
HPT435BT is a wireless device used in a mobile application, at least 100
cm from any body part of the user or nearby persons.
Note: Minimum separation distance of 100 cm between the antenna and persons must be
maintained.
This product should never be used:
• Without the user thoroughly understanding operator's manual.
• After disabling safety systems or altering the product.
• With unauthorized accessories.
• Contrary to applicable laws, rules, and regulations.
Note: THE HPT435BT SHOULD NEVER BE USED IN DANGEROUS ENVIRON-
MENTS.
Storage Precautions
Always clean the instrument after use. Wipe off dust with a cleaning brush,
then wipe off dirt with a soft cloth.
Store in a location with a temperature of -40°... +85°C, and no exposure
to direct sunlight. Use a clean cloth, moistened with a neutral detergent or
water, to clean the modem. Never use an abrasive cleaner, ether, thinner
benzene, or other solvents. Always make sure the instrument is completely
dry before storing. Dry the modem with a soft, clean cloth.
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