Sirio 827
Final mounting view
TUNING INSTRUCTION
• SIRIO 827 doesn't need any
tuning because its large band.
However a fine modifications is
available by acting on the final
whip.
SIRIO 827
26 MHz
28 MHz
OPTIONAL ANTI-NOISE NYLON RING
Optional noise nylon ring to reduce the wind noise of the radials.
Code 2511011.00
B Copyright SIRIO antenne - Technical Data are subjected to change - Printed in ITALY - Rev. 02/07/2003 - Cod. ID082
Installation Manual
DESCRIPTION
MOUNTING INSTRUCTIONS
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
• Fig. A:: Insert the tube ∅ 8 x 700 mm
in the top-part of the telescopic whip; let
it out for 430 mm, lock it by using the
supplied screw and key and assemble
the PVC cap on the whip.
SPECIFICATIONS
• Fig. B:: Unstring the 4 telescopic tubes
and fix them by using the 6 screws
supplied.
Electrical Data
Type
Frequency Range
Impedance
Radiation (H-plane)
Polarization
Gain
Bandwidth at V.S.W.R. 2:1
V.S.W.R. at res. freq.
Max Power
Feed system / position
Connector type
:
:
:
:
:
:
:
:
:
:
:
5/8 λ Ground Plane
26-29 MHz
50 Ω Unbalanced
360° Omnidirectional
Vertical
1.5 dBd, 3.65 dBi
2000 KHz
≤ 1.1 : 1
1000 Watts
Transformer DC-ground / base
UHF-female
:
:
:
:
:
Aluminium, Steel, Copper, Nylon
6700 mm
6000 gr
1400 mm
∅ 35-39 mm
• Fig. C:: Fix the telescopic whip to the
tube ∅ 37 mm by means of the first
tightening clip ∅ 32-35 mm and proceed
to fix the tube ∅ 37 mm to the tube ∅
44 mm with the second clip ∅ 40-43
mm.
Mechanical Data
Materials
Height (approx.)
Weight (approx.)
Radial lenght
Mounting Mast
• Fig. D:: Assemble the fixing rings as
shown in the picture and insert the antenna on the mounting mast. Put the
PVC caps on the radials ∅ 8 x 1400 mm
and fix them with the supplied screws
and key.
ID082
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