Mounting Instructions - Sirio Antenne SIGNAL KEEPER 27 Installation Manual

DESCRIPTION
1/4 λ Base Loaded Ground Plane antenna for base station service working on 27 MHz. The
whip is made of non-corrosive aluminium and assembled on a strong aluminium base which
allows an easy and safe installation assuring very good performances. The short loaded radials
are made of fiber glass to reduce the dimensions.
SPECIFICATIONS
Electrical Data
1/4 λ Base Loaded Ground Plane
Type :
Frequency Range : 26-28 MHz
50 Ω Unbalanced
Impedance :
Radiation : Omnidirectional
Polarization : Vertical
Gain : 0 dBd - 2.14 dBi
Bandwidth at V.S.W.R. 2:1 : 850 KHz
≤ 1.3 : 1
V.S.W.R. at f. res. :
Max Power : 100 Watts
Feed System / Position : Direct / Center
Connection : UHF Female
Mechanical Data
Materials : Aluminium, Chromed Brass, Nylon, Stainless Steel
Wind Load / Resistance : 36 N at 150 Km/h / 130 Km/h
Wind Surface : 0.03 m
Height (approx.) : 2400 mm
Weight (approx.) : 635 gr
Radial Length (approx) : 600 mm
∅ 35-40 mm
Mounting Mast :
ID077
2

MOUNTING INSTRUCTIONS

L = 1870 mm; use this lenght as a guide and a SWR-meter for fine tuning.