Diamond Antenna CP8040 Bedieningsinstructies - Pagina 3
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Attach mast support pipe to mast
with mast brackets. Mast support
pipe's tapping hole has to be
placed above the brackets and it
has to be pointed outside against
the mast. Upper end of mast
support pipe has to be placed
more than 12cm(4.7') above the
top end of the mast.
Applox. 12cm(4.7")
Trapping hole
Mast
Mast brackets
Spring washer
Support
Mast
pipe
V-bolt
⑥Place two radial element holders
from upper end of the support pipe
and
fasten
temporary
screwdriver. Do not fasten too
tightly at this stage, otherwise
feedpoint assemblies might not be
put into the support mast later.
Connect
a
coaxial
feedpoint assemble through the
support pipe. Then align the hole
in the lower part of feedpoint
assembly with the hole in the
support pipe and secure them with
hex
head
screw
and
washer.
(Note) Please do the waterproof
processing
to
the
section.
Place
vertical
element
feedpoint assembly and fix with
two hex head screws and spring
washers.
Turn each radial element into
radial element holders. Then align
water drain hole in each radial
element
trap
coil
downward by turning backward
and fasten each element with grip
nut.
Radiator
Hex head screw
Feed point assembly
Grip nut
Screw
Align water drain hole
downward when attach
Hex head screw
Radial element holder
Mast support pipe
<<Note>>
To avoid breaking each radial
element trap coil assembly, turn it
into a holder lightly till it stops and
turn backward to align water drain
hole downward and secure with a
screw.
・Adjustment
<<Note for frequency adjustment>>
Coaxial cable
Practice the following adjustment
procedure at the place where
theantenna is actually installed.Test
transmission for the adjustment has
to be performed for as short time as
this side
possible and with as low RF power
as possible. Maximum RF power
Support pipe
rating of continuous wave (CW) is
about 1/3 of it in SSB mode.If the
antenna is installed on a long
balcony railing, the railing itself may
work as a radial element and VSWR
of the antenna may not be changed
with the adjustment of attached
Nut
radial element length. If resonant
frequency of the antenna is within a
desired range, the antenna can be
used normally in this case. If
Fig-6
resonant frequency is out of desired
frequency range and adjustment is
required, the antenna has to be
isolated from the railing, moved to a
with
different place or installed on a mast,
which is at least 1m to 2m (3.3' to
6.6') long.
Prepare suitable VSWR meter for
operating frequencies and output
cable
to
RF power. Then connect it as
shown in below.
Tranceiver
spring
Adjustment procedure
started from any frequency you
like. Transmit at desired frequency
connector
and trim adjustment length of radial
element to have lower VSWR at
on
the frequency.
・Adjustment length of radial element
Adjustment length of each radial
element is shown in the following
table. If you do not have a VSWR
meter,
assembly
adjustment length.
(3.55MHz/7.05MHz)
Frequency
Radial Standard Length
7MHz
7.0-7.2MHz can be adjustable.
Radial element
Frequency
Radial Standard Length
3.500-
3.62MHz
3.68-
3.72MHz
3.745-
3.805MHz
3.500-3.805MHz can be adjustable.
(Fig-7
CP8040
VSWR
meter
(Fig-8
can
be
adjust
it
to
a
typical
Variation
Approx. 570mm
10mm/10KHz
(7.05MHz)
(Table A)
Variation
Approx. 550mm
30mm/10KHz
(3.55MHz)
Approx. 300mm
40mm/5KHz
(3.68MHz)
Approx. 250mm
25mm/10KHz
(3.745MHz)
If the radial element of a band is
made longer, resonant frequency
of the band is made lower propor-
tionally.
Though typical adjustment length
of each radial element is set at
center frequency of each band, it
varies more or less depending on
the place the antenna is installed.
Adjustment example:
If center frequency of 40m band is
set at 7.050MHz and real center
frequency when the antenna is
installed is at 7.010MHz, then
frequency difference between is
7.050MHz (desired center frequency) -
7.010MHz (real center frequency) =
40KHz.
From Table A, adjustment length at
40m band is about 10mm per
10KHz,therefore:
10mm x 40KHz / 10KHz = 40mm
Since real center frequency is lower
than desired center frequency, radial
element has to be made 40mm
shorter to have 7.050MHz center
frequency.
・VSWR
f
0
f
0
・Specifications
Frequency range
3.500-3.805MHz
Feed point Impedance
VSWR
Maximum power rating 200W(SSB),
Maximum wind resistance 35m/sec
Vertical element length
Radial element length
Weight
Connector
Mast diameter accepted 1 1/5" - 2 1/3"
Design
2 band trap vertical
antenna with trap radials
Though these products purchased
are manufactured under strict quality
control, if damage is caused by
transporting,
ask
promptly.
Design and specifications
Combinations
of these products will be
Hatx2, HatSx2
changed
HatSx4
improvement
advance notice.
HatSSx4
(Table B)
7.00-7.20MHz
50Ω
Less than 1.5
70W(FW/CW)
6.53m
1.8m
4.1kg
M-J
(30-62 )
your
dealer
for
future
without