Sirio 827 User Manual
SIRIO 827
SIRIO 827
CB & 10 m Base Station Antenna
DESCRIPTION
DESCRIPTION
The most modern technology and the most advanced instruments have been used for the realization of SIRIO 827, the new base
antenna with remarkable characteristics. It is made of Silicium Magnesium Aluminium tubes of big dimensions drawn and
cemented on the surface to get the maximum strenght of the main whip. The coil, made of enamelled copper wire of big section,
has been specially planned in order to bear high powers. It adopts the exclusive system C.A.C.S. (Coil Auto-Cooling System) which
allows the auto-cooling by a finned support that keeps the coil hanging up allowing the air circulation.
SPECIFICATIONS
SPECIFICATIONS
Electrical Data
Type : 5/8 l Ground Plane
Frequency range : 26.4...28.4 MHz tunable (see table)
Impedance : 50 W
Radiation (H-plane) : 360° omnidirectional
Polarization : Linear Vertical
Gain : 1.5 dBd, 3.65 dBi
Bandwidth @ SWR £2: ³ 2000 KHz (180 channel)
SWR @ res. freq. : £ 1.1
Max Power : 1000 Watts (CW) continuous
: 3000 Watts (CW) short time
Feed system/ position : Transformer DC-ground / base
Connector : UHF-female
Mechanical Data
Materials : Aluminium, Steel, Copper, Nylon
Wind Load/ Resistance : 264 N @ 150Km/h / 130 Km/h
Wind surface : 0.23 m
Length (approx.) : 6700 mm
Weigth (approx.) : 6000 gr
Radial lenght : 1400 mm
Mounting Mast : Æ 35-39 mm
2
OPTIONAL ANTI NOISE
NYLON RING
Optional nylon ring to reduce the
wind noise of the radials.
P/N: 2511011.00
S.W.R.
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
25.85
TYPICAL S.W.R. RESPONSE
Model: SIRIO 827
27.1
File: F-01-008
28.35
f.(MHz)
HI-QUALITY ANTENNAS MADE IN ITALY
ID082
TUNING TABLETUNING TABLE
Freq. (MHz)
26.4
27.0
(Ch.19 CB) 27.185
27.5
28.0
28.4
Mounting needed tools:
n. 1 tape rules (meter)
n. 1 phillips screwdriver
n. 1 10 mm open key
n. 1 13 mm open key
L (mm)
670
457
400
300
137
18
Parts List
Pos Q.ty Description
1 1 4 sections telescopic aluminium whip
2 6 Æ 3.9x6.5 phillips tapping screws
3 1 Æ 6x8x700mm top section tube
4 1 M4x4 hexagon socket set screws cup point
5 1 2mm hexagonal key
6 9 PVC caps for Æ 8 mm aluminium tube
7 1 Æ 33.5x37x1100 mm aluminium tube
8 1 Æ 32-35 mm hose clamp
9 1 Bottom section assembled with coil and connector
10 1 Æ 40-43 mm hose clamp
11 8 Æ 6x8x1400mm aluminium tubes
12 8 brass radials reinforces
13 8 M6x6 hexagon socket set screws cup point
14 1 3mm hexagonal key
15 2 AISI 302 stainless steel rings
16 4 M8x30 exagon head screws
17 4 M8 square nuts
Pull out the sections of telescopic aluminium
whip (1) and lock they using the screws (2).
Insert the top aluminium tube (3) at L (see
tuning table for frequency) and lock it using the
screw (4) and 2 mm hexagonal key (5).
Mount the PVC cap (6).
NOTE: Use the table just as a guide. For finetuning please use an SWR-meter
Æ 6x8x700mm
top section tube
11
22
Fit the whip (1) on
the tube (7) using the
hose clamp (8).
Mount the tube (7)
on the bottom part
with coil (9) and lock
it using the hose
clamp (10).
Insert limit
punching
Insert the PVC cap (6) on
the tubes (11). Insert the
brass reinforce (12) in the
tubes (11) and lock they
using the screws (13) and
3mm hexagonal key (14).
Assemble the fixing ring
4 SECTIONS ALUMINIUM WHIP
Mast Æ 35-39mm
(not supplied)
HI-QUALITY ANTENNAS MADE IN ITALY
B Copyright SIRIO antenne - Technical Data are subjected to change - Printed in ITALY - Rev. 16/10/2008 - Cod. ID082
(15), the screws (16) and
the nuts (17) in according
to the picture and mount
the antenna on the mast.
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