7-30MHz / 50MHz WIDE BAND MOBILE ANTENNA
【3-100MHz Receiving only】
Fold over whip element structure
To use antenna propeprly,read these instructions
thoroughly before using it keep this manual carefully The units is consisted of the antenna following parts.
at hand for later use.
GRA-750B is for amateur use.Please transmit on the armature bands.
To avoid inviting accidents,please follow the following
notices.
①
Nuts and screws can be loosened by vibration during
driving.Be sure to check those fastening devicess from
time to time and refasten if necessary.
②
Strong impact can cause to break the antenna and may
invite accident by falling the element it is recommended
to drive away from those obstacles such as branches.
③Strng vibrations caused by diesel engines may damage
the antenna.It is recommended to install the antenna at
the location where has least vibration as possible.
④
Touching the antenna during transmission may cause to
electrify.Be sure to confirm to see if there is no one
around the antenna if transmission is taing place while
thehehe car is parked.
⑤
Don't drive a car with the antenna tilted.Driving the car
with the antenna tilted may cause serious human
accident.
⑥
To install the antenna.be sure to take those things such
as local traffic regulations.and physical length of the car
in account,and especially it has to be installed the
location where is not easily reachable by people.
⑦
SWR of the GRA-750B is less than 2.0 because
GRA-750B is designed as wide band.When transmitting.
Use theantenna tuner and adjust the SWR less than 1.5
SWR could be changed depending on the installation
situation.
⑧
If the thunder seems to rumbling the vicinity.do not
touch the antenna and coaxial cable to avoid
electrocuted by lightning.
Description
①
GRA-750B is designed as wide band.It can be used on
7-30MHz/50MHz
②
Cumbersome adjustment the frequency is not necessary.
(Using with the antenna turner us necessary)
Be sure to watch out for coaxial cable wining.since outside
water is most likely to enter through the wiring.
Don't attach the antenna,bracket and coaxial cables close
to the car cables or other electrical parts:otherwise,
faral accident should happen.
Notice
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