3
RF Exposure Warning
To ensure optimal transceiver performance and to avoid exposure to excessive
electromagnetic fields, the antenna system must be installed according to the
instructions provided.
High voltages exist on the antenna during transmission and tuning. Do not
touch the antenna during these activities. RF burns may result.
Install the grounding system or counterpoise as directed to prevent RF burns
from any metal part of the transceiver.
Safe working distance is based on continuous exposure to CW type transmis
-
sions for occupational exposure. Safe working distance can be reduced with
normal voice communication.
Important Notes:
•
When the PRC-4090 transceiver is used at a power level of 150 watts PEP
and with a 13 dBi gain antenna, the antenna(s) used with this transceiver
should be located at least 14.4 metres from the operator and should not
be co-located or operating in conjunction with any other antenna or trans
-
mitter.
•
When the PRC-4090 transceiver is used in a vehicular environment at a
power level of 150 watts PEP with 1.5 dBi gain antenna, the antenna(s)
used with this transceiver should be located at least 3.9 metres from the
operator and should not be co-located or operating in conjunction with
any other antenna or transmitter.
•
Antenna types not included in the list below that have a gain greater than
the maximum gain indicated for any type listed are strictly prohibited for
use with this device.
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