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.8Y series

Directional antennas

  • The S.8Y series are of a rugged and reliable construction for long range communication networks at both UHF & VHF.
  • The one piece folded dipole incorporates a d.c. short to minimise static interference.
  • The balun assembly is completely encapsulated in epoxy resin, totally preventing
    moisture ingress, and has been tested to BS5490:IP67.
  • These antennas give a gain of 10 dBd with front to back ratio typically 18 dB.
  • They are supplied as standard with 3 metres of RG 213 cable terminated with an 'N' type socket, although cable and connector options are available upon request.
  • The S.8Y is approved to MPT1411: Part 2.

ORDERING DESIGNATIONS

TYPE FREQUENCY PRODUCT NO.
S.8Y-155 145 - 165 MHz Replaced by 7043150
S.8Y-165 155 - 165 MHz Replaced by 7043155
S.8Y-405 380 - 430 MHz Replaced by 7043410
S.8Y-445 420 - 470 MHz Replaced by 7043420

SPECIFICATIONS

ELECTRIAL  
FREQUENCY RANGE 140 - 500 MHz
INPUT IMPEDANCE 50Ω
BANDWIDTH ± 4% of centre frequency
SWR <1.5:1
FRONT TO BACK RATIO 18 dB
MAXIMUM INPUT POWER 150 Watts
POLARISATION Vertical & horizontal
FORWARD GAIN 10 dBd
3 dB BEAMWIDTH E Plane 43º
H Plane 50º
MECHANICAL  
STANDARD CONNECTION 3 m (118.11 in.) Length of RG 213
c/w 'N' type socket
ELEMENTS UHF UHF 12.7 mm dia. x 1.6 mm
(0.50 in. dia x 0.06 in.)
wall aluminium alloy grade 6063T6
ELEMENTS VHF VHF 19.0 mm dia. x 1.6 mm
(0.75 in. dia x 0.06 in.)
wall aluminium alloy grade 6063T6
SUPPORT BOOM 31.7 mm dia. x 2.6 mm
(1.25 in. dia x 0.10 in.)
wall aluminium alloy grade 6082T6
FASTENERS Stainless steel grade A2-70
SADDLE CLAMPS Diecast zinc alloy
INSULATOR Epoxy resin encapsulant
LIGHTNING PROTECTION Direct grounded
MOUNTING BRACKETS See mounting accessories (not supplied)
TYPICAL WEIGHT (UHF) 3 kg
TYPICAL WEIGHT (VHF) 5.2 kg
TYPICAL LENGTH (UHF) 1.6 m
TYPICAL LENGTH (VHF) 4 m
TYPICAL WIND LOADING
@ 162 km/h (UHF)
UHF 100 N
TYPICAL WIND LOADING
@ 162 km/h (VHF)
VHF 230 N

MOUNTING ACCESSORIES

Mounting accessories to be ordered separately.

 

TYPE DIMENSION PRODUCT NO.
1763-100   123001001
UA64-23 25 - 50 mm 123001006
UA64-23 25 - 76 mm 123001007
UA66-24 25 - 50 mm 123001017
UA66-24 25 - 76 mm 123001018
UA66-24 25 - 100 mm 123001019
UA66-24 25 - 115 mm 123001020

 

 

 

 

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)

 

 

If the antennas are mounted for vertical polarization, these curves show the radiation patterns in the vertical plane.

 

 

TYPICAL RADIATION PATTERN (H-PLANE)

 

If the antennas are mounted for vertical polarization, these curves show the radiation patterns in the horizontal plane (horizontal coverage).

 

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