Benelec 0200402 Handbuch - Seite 2

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Operating the HF Dipole Wire Antenna

Method 1 (

Earth stake and counterpoise)

This method is used when it is inconvenient to earth the

antenna to a vehicle or no vehicle is available.

1) Select location. A large tree or other support in a clear area is best.

Avoid areas with large numbers of trees around the antenna, if possible,

as this will reduce performance. Selecting the highest point of ground,

if suitable, will enhance performance. If possible arrange antenna so that

the earthed or low end of the antenna points in the general direction of the

station you most desire to contact. (see diagram)

2) Un-reel the antenna in the preferred direction, in a straight line along

the ground. Tie the bare end of the long throw cord securely to the white,

eyelet located near the small metal cylinder. Erect the antenna using

the throw cord. When throwing the weight over a tree limb try to select a

smooth clear branch away from other branches, to facilitate retrieval of

the cord later.

3) The end of the antenna (load wire) will drop vertically from the suspen-

sion point. Allow it to drape along the ground.

wire from contacting ground.

4) Place the earth stake through the metal ring located near the balun box,

and push it fully into the ground. The antenna should be fully extended

and pulled tight. Extend the counterpoise wire fully in direction shown on

diagram.

5) Connect your transceiver to the balun box using the coaxial cable

provided.

Method 2 (

Earthing the antenna with a vehicle)

This method is used if a vehicle mounted transceiver is being

used or if a vehicle is available and can be placed conveniently

in the erection location. All other factors being equal it will gen-

erally give better results.

1) Follow through instructions for method 1. to include step 3. Place

vehicle in position (refer diagram) Tie short throw cord to white

eyelet near balun box and secure other end to the vehicle as high as

possible. (a roof rack is ideal, otherwise to highest convenient point.)

The antenna should be fully extended and tight.

2) Attach the clip at the end of the counterpoise to the tow bar or other

point on chassis or body where a bare metal contact can be made. The

counterpoise wire can lay loosely on the earth and does not need to be

tight.

3) Connect your transceiver to the balun box with supplied coax.

Unreeling & reeling the antenna

1) Unfold the black handle.

2) Insert the earth stake through the metal saddles on the shuttle body.

The earth stake then becomes the axle on which the antenna is unwound

3) Holding the earth stake in one hand wind or unwind the antenna with

the black handle.

When rewinding the antenna do not over tighten the cable or allow it to

become kinked.

MADE IN

AUSTRALIA

P r o f e s s i o n a l W i r e l e s s S o l u t i o n s

Do not prevent tail of load

NCAGE: Z4712

Tree or other support

White eyelet

Throw

Radiating portion of antenna

Cord

Load Wire

Allow load wire to

drape along ground

Method 2

Metal load

cylinder

Transceiver

Alternatively

transceiver may be

mounted in vehicle

Earthing

It is important that the antenna is correctly earthed, via the earth stake, or to a

vehicle body. When attaching the counterpoise to a vehicle ensure the earth clip

has good contact with a bare metal part of the vehicle chassis or body. Painted,

rusted or greasy surfaces will not allow a good earth. When using the earth stake

try to insert it into the ground as far as possible. Fully extend the counterpoise

wire. In dry conditions, wetting the soil where the earth stake is inserted will give

much better earthing.

Emergency Use

When no trees or other tall support structures are available the antenna should

be suspended as high as possible using whatever means available. The general

rule is, the higher the radiating portion of the antenna, the better the performance.

Bushes, roadside signs, or fence posts can be used. If suspending from a wire

fence ensure antenna is at a right angle to the fence line. The antenna will work,

stretched out on the ground, but performance will be reduced.

Insert earth stake

through saddles on

shuttle body

Hold earth stake

in one hand, wind/

unwind with other

Method 1

Best communication occurs

this direction

Balun box

Earth stake

Counterpoise

(extended fully)

Coax: to trans-

ceiver

Loop in earth wire

near balun box

Short cord (supplied)

Earth clip connected to tow bar

or other metal part

Fold out handle