Antenna Body
Set Screw
Scale
1. Select the right frecuency, check the position of
the antenna body scale with the graphic or the
band chart Fig.1 & Fig.2
2. Loosen the set screw as a half turn by hand.
(Keep the rod element retracted).
3. Slide the antenna body to the request
frequency after step 1 and
fasten it with the
set screw by hand
. Make the rod element
full length.
(Do not use any tools such as pliers when
fasten set screw. The antenna may be
damaged).
4. Transmit and measure the SWR. lf the
tuning frequency is lower than the request
frequency, make the rod element short or
make the antenna body down.
The SWR should be lower than 1.5
depending on the conditions. If not, please
change the installation conditions. We also
recommend using the antenna tuner.
5. lf the tuning frequency is higher than the
request frequency, move the antenna body
up.
6. When adjusting 50MHz band, put the
antenna body down and make the rod
element full length. (Large radial element).
7. When adjusting 144/430MHz bands, put the
large radial (Large radial element) in the fixed
antenna and fasten the radial element. When
adjust 144MHz band, shorten the antenna
body 1/4 wave, change the radial element of
the body antenna to the shorter one (Short radial
element). When adjustíng 430MHz, make the
antenna body retracted with the large radial
element (Large radial element).
Adjustment
Atenttion!!!
1. Please install the antenna vertically
to have a better performance.
2. The SWR should be lower than 1.5
depending on the conditions. In that
case, please use the antenna tuner.
Installation Place (example)
1. Set the bracket where the
grounding earth can be taken.
(gutter mount, trunk lid etc)
2. lnstall the antenna at the car roof
by the magnet base.
3. Set the magnet base on the wood
table and install the antenna with
approx. 10m ground wire and
connect to the grounding earth.
4. Install the antenna at the metal
handrail where the grounding earth
can be taken.
Settings of HF PRO 1
Frequency
Scale (mm)
30.000
3
29.000
3
28.000
3
24.900
4
21.300
4
18.000
5
14.100
8
10.500
16
7.400
22
(Fig.1)
(Fig.2)
Scale
Frequency
(Mhz)
27
25
20
15
10
5
2
7
10
14
18
21
24
28 30
Rod Element
Radial Element
(Additional Large/Short)
O
OO
O
