User's Manual Part 2

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Manpack Operation Using the Automatic Antenna Tuner
The PRC-2090 manpack can be used with the 10 metre throw over long-wire
provided or the optional 3 metre collapsible whip.
Note:- Either the whip or the long-wire can be used but not both together.
Using the Whip (P/N 2090-02-07)
The gooseneck should be fitted to the whip antenna stud and the whip unfolded to
its maximum height. If using the Barrett manpack while walking in the backpack
configuration it is suggested that while in receive standby mode the collapsible
antenna be only extended to half height and secured using the Velcro tab. When a
call is received extend the antenna to full height before transmission.
Note:- When using an un-tuned antenna such as the whip or the long-wire the
section “Antenna Select” in the standard menu should be used to enable the
automatic tuner i.e. select “Whip/Long-wire” operation. When this is selected the in-
built tuner automatically tunes the whip or long-wire whenever the unit transmits
after a channel change.