Procom GP 27 - Manual

GP 27
¼ λ Ground-Plane Antenna for the 27 MHz Band or for
Frequencies within 27…45 MHz
DESCRIPTION
GP 27 is a glass fibre ground-plane antenna of the triple-leg type.
The antenna is delivered factory-tuned to 27 MHz – further adjustment
is not necessary for this band.
Tunable (by cutting) to frequencies within the range: 27…45 MHz.
The antenna can be field-tuned following the cutting diagrams below as
a guide and fine-tuning using an SWR-meter.
For a small cutting charge the antenna may also be supplied factory-
tuned. In this case, please state centre frequency.
GP 27 is made of first class materials and will endure rough climates for
years – no maintenance required.
The radiator is measured from its free end to the bottom of the black insulator, while the radials are
measured from their free ends to where they meet the GP-head.
ORDERING DESIGNATIONS
TYPE PRODUCT NO.
GP 27 100000162
GP 27/42 mm 100000163
SPECIFICATIONS
ELECTRICAL
MODEL GP 27
ANTENNA TYPE ¼ λ triple-leg ground-plane
FREQUENCY Tunable by cutting within: 27…45 MHz
IMPEDANCE Nom. 50 Ω
RADIATION Omnidirectional
POLARIZATION Vertical
GAIN 2 dBi 0 dBd
BANDWIDTH 1.0 MHz @ 27 MHz (SWR < 1.5)
1.5 MHz @ 45 MHz (SWR < 1.5)
SWR < 1.3 @ f. res.
MAX. POWER 1 kW
MECHANICAL
TEMP. RANGE -30° C → +70° C
CONNECTOR UHF-female (fitting PL-259)
WIND SURFACE 0.062 m²
WIND LOAD 78 N @ 160 km/h
COLOUR White/bright chrome
MATERIALS Elements: Glass fibre
Metal parts: Bright chromed brass
TOTAL HEIGHT Approx. 4.5 m
WEIGHT Approx. 1.7 kg
MOUNTING 38 mm dia. mast tube
(42 mm dia. as option, see note)
PLEASE NOTE
The GP 27 can be delivered with a GP-head for mounting on 42 mm dia.
mast tube (standard is 38 mm) when ordering as option GP 27/42 mm.