Products

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R&D-departments, where our engineers are always working
to develop new innovative products in co-operation with our customers.

S.1H series

Heavy duty centre-fed folded dipole antenna.

  • The S.1H series are designed for use in extreme environments, or for multi channel applications.
  • The one piece folded dipole assembly incorporates a d.c. short and is completely encapsulated in epoxy resin, totally preventing moisture ingress.
  • A sleeve is welded to the dipole to increase strength, and improve VSWR.
  • These antennas can be arranged in a variety of arrays to produce a wide range of radiation patterns.
  • They are supplied as standard with 3 m of RG 213 cable terminated with an \'N\' type socket.

ORDERING DESIGNATIONS

TYPE

FREQUENCY

PRODUCT NO.

S.1H-78

66 - 88 MHz

123003020

S.1H-98

88 - 108 MHz

123003021

S.1H-127

117 - 137 MHz

123003022

S.1H-165

155 - 175 MHz

123003023

SPECIFICATIONS

ELECTRICAL 
FREQUENCY RANGE66 - 175 MHz
INPUT IMPEDANCE50Ω
BANDWIDTH± 10% of centre frequency
SWR<1.5:1
FRONT TO BACK RATIO4 dB
MAXIMUM INPUT POWER500 Watts
POLARISATIONVertical
FORWARD GAIN2 dBd
3 dB BEAMWIDTHE Plane 85º
H Plane 200º
(Gain & RPE assmes mount on conductive pole)
MECHANICAL 
STANDARD CONNECTION3 m (118.11 in.) Length of RG 213
c/w \'N\' type socket
ELEMENTS19.0 mm dia. x 1.6 mm
(0.75 in. dia x 0.06 in.)
wall aluminium alloy grade 6063T6
DIPOLE SLEEVE (WELDED)31.7 mm dia. x 2.6 mm
(1.25 in. dia x 0.10 in.)
wall aluminium alloy grade 6063T6
SUPPORT BOOM48.4 mm dia. x 4.5 mm
(1.91 in. dia x 0.18 in.)
wall aluminium alloy grade 6082T6
FASTENERSStainless steel grade A2-70
SADDLE CLAMPSMachined aluminium alloy
INSULATOREpoxy resin encapsulant
LIGHTNING PROTECTIONDirect grounded
MOUNTING BRACKETSSee mounting accessories (not supplied)
TYPICAL WEIGHT5.3 kg (11.68 lb.)
TYPICAL LENGTH1.5 m (59.06 in.)
TYPICAL WIND LOADING
@ 162 km/h
202 N

MOUNTING ACCESSORIES

Mounting accessories to be ordered separately.

TYPEDIMENSIONPRODUCT NO.
1763-100 123001001
UA64-2325 - 50 mm123001006
UA64-2325 - 76 mm123001007
UA66-2425 - 50 mm123001017
UA66-2425 - 76 mm123001018
UA66-2425 - 100 mm123001019
UA66-2425 - 115 mm123001020

 

 

1763-100

Galvanised steel-cross-over clamp, fits 32 mm (1-1/4") diameter antenna booms to up to 50 mm (2") diameter poles, max. length 1500 mm.

 

UA64-23

Circular cast alloy clamp, gives a good two point fixing, supplied as standard with 4 x 50 mm stainless steel ‘U’ bolts and two half-moon cast spacers to fit antenna booms of 25 to 50 mm diameter. Will also accomodate 76 mm (3”) ‘U’ bolts to fit masts of that diameter. (order UB06).

 

UA66-24

Rectangular cast alloy clamp, gives a good two point fixing, supplied as standard with 4 x 50 mm stainless steel ‘U’ bolts and two half-moon cast spacers to fit antenna booms of 25 to 50 mm diameter.

To fit 76 mm (3”) masts (order UB06 ‘U’ bolts).

To fit 100 mm (4”) masts (order UB07 ‘U’ bolts).

To fit 115 mm (4 1/2”) masts (order UB09 ‘U’ bolts).

 

 

TYPICAL RADIATION PATTERN (E-PLANE)

 

 

TYPICAL RADIATION PATTERN (H-PLANE)

 

 

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