Preparing the transceiver for use
36 Manpack Transceiver 2110 series Reference Manual
Tactical whip antennas
There are three tactical whip antennas available for use with the 2110 series Manpack
Transceiver:
•tape whip
• knock-down whip
• 3 m (10 ft) collapsible whip
All whip antennas are omnidirectional in performance, therefore providing radiation
efficiency equally in all directions depending on the deployment position (for example,
vertical position for long distances and horizontal position for short distances). When
receiving, this omnidirectional performance may mean more unwanted signals are
picked up, which contributes to high levels of background noise or interference.
The tactical whip antennas are suitable for multi-frequency operation. The built-in
antenna tuner automatically tunes the antenna on the first time a transmission occurs
after selecting a new channel. This occurs when your transceiver receives a call that is
addressed to it, or when you press PTT. Alternatively, the antenna can be tuned to a
frequency by pressing TUNE, then PTT. The SWR of the antenna may be viewed by
pressing TUNE. The whip antennas are suitable for scanning ALE/CALM and Codan
Selcall networks.
The tactical whip antennas are designed for deployment on the antenna stud on the front
panel of the transceiver. The tape and knock-down whip antennas are suitable for
walking and listening for communication over short distances up to 100 km (60 mi),
using frequencies of 3 to 30 MHz. The 3 m (10 ft) collapsible whip antenna is suitable
for communication over short to medium distances up to 500 km (300 mi), using
frequencies of 2 to 30 MHz. Due to its length and rigidity, the collapsible whip antenna is
not suitable for walking and listening.
Table 9: Advantages and limitations of a tactical whip antenna
Advantages Limitations
Quick and easy to deploy.
Tape and knock-down whips are suitable
for monitoring communications while
moving due to their flexibility and knock-
down properties.
Omnidirectional antenna, therefore it can
pick up signals equally in all directions.
Suitable for short-distance
communications.
Suitable for scanning applications.
Multi-frequency operation.
Tape and knock-down whips unsuitable for
distances over 100 km (60 mi).
3 m (10 ft) collapsible whip unsuitable for
distances over 500 km (300 mi).
3 m (10 ft) collapsible whip unsuitable for
monitoring communications while
moving.
This antenna is more susceptible to noise
pickup such as that produced by welders,
electric motors, power lines etc. If used in
a noisy environment, degradation of the
received signal will occur.
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