Installation Instructions

OM-E 2072-09287-00
1-3
The nominal output impedance of the Micom is 50 Ω, and therefore it can be directly connected to
broadband antennas (dipoles, traveling wave antennas, delta and semi-delta antennas). An internal
antenna tuner enables using various whip antennas (in addition to the 2.7 meter (9 ft) antenna offered
as a standard for the Micom Pathfinder). The transmitter includes antenna mismatch protection: if the
VSWR (Voltage Standing Wave Ratio) is too high, for example, because the antenna is disconnected
or damaged, the transmission will be inhibited to avoid damage, and a message will be displayed. In
addition, if for any reason, the transmitter internal temperature exceeds the maximum permitted
temperature, the transmitter output power is automatically reduced to avoid fault due to excessive heat.
The Micom has an intelligent, user-friendly man-machine interface that enables easy operation. The
display provides feedback to the operator and shows extensive information concerning system status
(e.g., mode of operation, link status, call progress indications, low battery condition, etc.), as well as
the GPS data (when this option is used). Support for multiple languages is also available.
1-3.2 Carrying Harness
Micom Pathfinder carrying harness consists of
a lightweight nylon harness with adjustable
shoulder straps that enable carrying all the
necessary accessories. Additional waist and
breast straps, also easily adjustable for best fit
and user’s comfort, stabilize the harness while
walking and running.
A foldable rear support enables placing the
harness on ground, vertically, for dismounted
operation.
CAUTION
During dismounted operation, use
the supplied grounding spike and
strap to ground the Micom
Pathfinder unit.
Figure 1-3. Micom Pathfinder Carrying Harness,
General View (Closed for Transport)
For best equipment protection, the carrying harness completely envelops the transceiver. A front flap
with zippers provides easy access to the internal storage compartments for cables and spare battery,
and also permits the installation of the Micom transceiver. After installing the transceiver, the front
flap remains closed: a separate top flap can be opened to access the Micom front panel, install the
antenna and the handset, and operate the radio set.
Side pouches can be used to carry the folded whip antenna, and other accessories. The optional GPS
antenna is attached to the side of the harness.
1-3.3 FAD5530 Collapsible 9-Foot Whip Antenna
The FAD5530 whip antenna is the standard Micom Pathfinder antenna used for short-range
ground-wave communication, and is suitable for portable operation. Antenna matching is performed
by the Micom internal automatic antenna tuner, and thus FAD5530 is directly connected to the WHIP
connector of the Micom.
The FAD5530 whip antenna consists of two components:
• AT-271A Collapsible Antenna. The antenna is composed of six sections. Each section fits into
the end of a wider section. A stainless-steel plastic-covered cable (or braided plastic cord),
under spring tension, is threaded through the sections to keep them together when operating.
When the sections are folded, the cable keeps them together as a group, to prevent the loss of
individual sections. Spring tension is provided by a spiral spring in the base section.