=
=
Low Loss
Coaxial RF choke
Impedance
matching stub
Capacitor
Electrical Length
5/8 or 0,625
l
effective radiator
length 6.9m
To RF generator
Id406, pag 3/4
SAFETY FIRST:
BEFORE
DOING INSTALLATION, READ THIS MANUAL AND THE
SUPPLIED SEPARATE SAFETY MULTI LANGUAGE
INFORMATION SHEET.
SUGGESTION
: We recommend to assemble the antenna on
a flat ground open area. U
YOU CAN BE KILLED IF THIS ANTENNA
COMES NEAR ELECTRIC POWER LINES.
se a good coax cable like BELDEN
H1000R, AIRCOM PLUS or RG-213 as short as possible to
get the best performance and we recommend to mount your
antenna at minimum 3 meters above the roof, as far as
possible from walls, power lines and other antennas.
TROUBLESHOOTING:
Gain-Master is a pre-tuned antenna.
It is factory checked one by one and it does not need any
regulation. If you are unable to obtain an accettable SWR
reading from your antenna, follow these suggestions to try to
solve the problem.
# Check the coaxial cable and all its connections. Be sure that
the cable is not pinched, shorted, broken or kinked.
# Check if the equipments (CB radio and SWR-meter) work
properly. Make use of owner’s manual for assistance in
operating it.
# Be sure that the antenna is installed at least 3 meters above
the roof of the nearest building and 5-6 meters above or
away from any metal objects in the area.
n. 1 tape rules (meter)
n. 1 screwdriver flat point
n. 1 10 mm open jaw wrench
n. 1 plier
n. 1 electrical tape
Mounting needed tools:
Id406, pag 3/4
Schematic diagram
Fig.1
Fig.2
RF current
Fig.3
Fig.4
Gain-Master is a registered Trade Mark of SIRIO antenne s.r.l.
ä
HI-QUALITY ANTENNAS MADE IN ITALY.
antenne
SIRIO
S
More technical information on: www.gain-master.it
Gain-Master
ä
Technical Informations
0 dB
3
6
10
20
30
-150
-120
-90
-60
-30
30
60
90
120
150
180
1
2
Gain-Master
Conventional 5/8
24° Max radiation angle
of conventional 5/8
l
TYPICAL RADIATION PATTERN
0° Max radiation angle
of Gain-Master
1-2dB more power gain
TYPICAL S.W.R. RESPONSE
Model: Gain-Master
S.W.R.
1.0
1.2
1.8
1.4
2.2
1.6
2.0
2.4
2.6
2.8
3.0
24.75
27.75
30.75
f.(MHz)
File: F-01-030
25.5-30 MHz band @ SWR<2
Parts List
Pos
Q.ty
Part No Description
1
1
SL05700 Wired coaxial radiator
2
1
-
Bottom section with coil
3
1
CH01407 8mm open key
4
1
CF02017 12x15x1920 fiberglass tube
5
1
CF02117 15.4x19x1920 fiberglass tube
6
1
CF02217 19.5x23.5x1920 fiberglass tube
7
3
FA00200 Ø 16-27mm AISI316 hose clamps
8
1
TE06900 Ø 14.8x17 radiator fixing part
9
1
VT13200 M4x6 AISI304 set screw cup point
10
1
CH00800 2 mm Allen key
11
1
TE06816 Ø 14.3 PVC top cap
12
1
IE560
self-adhering “DANGER” label
13
2
VT01300 M6x20 AISI304 exagonal head screw
14
2
ST04500 Extruded aluminium bracket
15
2
TI03100 M6x188 AISI304 V-bolt
16
6
DA01400 M6 AISI304 hexagonal nut
17
6
RO04200 M6 AISI304 spring lock washer
