TYPICAL TUNING DIAGRAMS
Model
GP 6-EGP 6-E
GP 6-EGP 6-E
GP 6-E
VHF Base Station Antenna 140-175 MHzVHF Base Station Antenna 140-175 MHz
VHF Base Station Antenna 140-175 MHzVHF Base Station Antenna 140-175 MHz
VHF Base Station Antenna 140-175 MHz
Installation ManualInstallation Manual
Installation ManualInstallation Manual
Installation Manual
B Copyright SIRIO antenne - Technical Data are subjected to change - Printed in ITALY - Rev. 01/07/1998 - Cod. ID239
NOTE:
• It is recommended to use the curves as a guide and fine-tune using an SWR-Meter.
MOUNTING INSTRUCTIONSDESCRIPTION
2x5/8 λ Ground Plane base station colinear antenna for land and marine service. It works on
the frequency range of 140-175 MHz by using the cutting diagram enclosed. The matching coil
is DC feeded for a perfect protection from the static discharges. GP 6-E is made of non-corrosive
aluminium and assembled on a very strong base of die-cast metal to get the maximum robustness
and the best performance. Tuning is easy by following the attached directions.
SPECIFICATIONS
Electrical Data
Type : 2x5/8 λ Colinear Ground Plane
Frequency Range : 140-175 MHz tunable by cutting
Impedance : 50 Ω Unbalanced
Radiation (H-plane) : 360o Omnidirectional
Radiation (E-plane) : Beamwidth at -3 dB = 30
o
Radiation angle deg. : 3.6
o
Polarization : Vertical
Gain : 3.8 dBd - 5.95 dBi
Bandwidth at V.S.W.R. 2:1 : 5.2 MHz at 140 MHz
V.S.W.R. at res. freq. : ≤ 1.2 : 1 at 140 MHz
Max Power : 200 Watts
Feed System / Position : Transformer DC-Ground / Base
Connection : UHF Female
Mechanical Data
Materials : Aluminium, Chromed Brass, Nylon
Wind Load / Resistance : 46 N at 150 Km/h / 120 Km/h
Wind Surface : 0.04 m
2
Height (approx.) : 3060 mm
Weight (approx.) : 750 gr
Mounting Mast : ∅ 25-30 mm
ID239
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