VX-P820/-P870 SERIES OPERATING MANUAL
1
Important Notice for North American Users Regarding 406 MHz Guard Band
The U.S. Coast Guard and National Oceanographic and Atmospheric Administration have requested the
cooperation of the U.S. Federal Communications Commission in preserving the integrity of the protected
frequency range 406.0 to 406.1 MHz, which is reserved for use by distress beacons. Do not attempt to
program this apparatus, under any circumstances, for operation in the frequency range 406.0 - 406.1 MHz if
the apparatus is to be used in or near North America.
Warning - Frequency band 406 - 406.1 MHz is reserved for use ONLY as a distress beacon by the US
Coast Guard and NOAA. Under no circumstance should this frequency band be part of the
preprogrammed operating frequencies of this radio.
NOTE
In order to maintain the specified water integrity performance, periodic maintenance is recommended.
Should the radio sustain a severe shock (e.g. if it is dropped), the water integrity may be compromised,
requiring service. Should this occur, contact your Authorized Vertex Dealer or Vertex Standard USA, Inc.
Intrinsic Safety (IS) Information
IS versions of the VX-P820/-P870 series, equipped with any of the following optional units, meets the
requirements of ANSI/UL 913 6th Edition for Class I, Division 1, Groups A-D; Class II, Groups E-G; and
Class III for hazardous locations.
Battery Packs: FNB-V92LIIS
Speaker Microphone: MH-50
D7A, MH-66A7A, MH-66B7A
Substitution of components may impair intrinsic safety. Installation of FNB-V92LIIS does NOT con-
vert normal radio into IS version.
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