Sirio Antenne GP 3-E User manual

TYPICAL TUNING DIAGRAMS

Model

GP 3-EGP 3-E

GP 3-EGP 3-E

GP 3-E

VHF Base Station Antenna 135-175 MHzVHF Base Station Antenna 135-175 MHz

VHF Base Station Antenna 135-175 MHzVHF Base Station Antenna 135-175 MHz

VHF Base Station Antenna 135-175 MHz

Installation ManualInstallation Manual

Installation ManualInstallation Manual

Installation Manual

BCopyright SIRIO antenne - Technical Data are subjected to change - Printed in ITALY - Rev. 01/07/1998 - Cod. ID059

NOTE:

• It is recommended to use the curves as a guide and fine-tune using an SWR-Meter.

MOUNTING INSTRUCTIONSDESCRIPTION

5/8 λ Ground Plane base station antenna for land and marine service. It works on the frequency

range of 135-175 MHz by using the tuning diagram enclosed. The matching coil is DC feeded

for a perfect protection from the static discharges. GP 3-E is made of non-corrosive aluminium

and assembled on a very strong base of die-cast metal to get the maximun robustness and the

best performance. Tuning is easy by following the attached directions.

SPECIFICATIONS

Electrical Data

Type : 5/8 λGround Plane

Frequency Range : 135-175 MHz tunable by diagram

Impedance : 50 ΩUnbalanced

Radiation (H-plane) : 360oOmnidirectional

Radiation (E-plane) : Beamwidth at -3 dB = 67o

Radiation angle deg. : 18o

Polarization : Vertical

Gain : 1.5 dBd - 3.65 dBi

Bandwidth at V.S.W.R. 2:1 : 6.7 MHz at 135 MHz

V.S.W.R. at res. freq. : ≤1.2 : 1

Max Power : 200 Watts

Feed System / Position : Transformer DC-Ground / Base

Connection : UHF Female

Mechanical Data

Materials : Aluminium, Nylon

Wind Load / Resistance : 28 N at 150 Km/h / 150 Km/h

Wind Surface : 0.02 m2

Heigth (approx.) : 1480 mm

Weight (approx.) : 570 gr

Mounting Mast : ∅25-30 mm

ID059

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