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S.2Y series

Directional antennas

  • The S.2Y series are of a rugged and reliable construction for 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 3 dBd with front to back ratio typ. 13 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.

ORDERING DESIGNATIONS

TYPEFREQUENCYPRODUCT NO.
S.2Y-7267 - 76 MHzReplaced by 7031050
S.2Y-8277 - 86 MHzReplaced by 7031066
S.2Y-155145 - 165 MHzReplaced by 7031144
S.2Y-165156 - 175 MHzReplaced by 7031156
S.2Y-405376 - 424 MHzReplaced by 7039380
S.2Y-410385 - 435 MHzReplaced by 7039410
S.2Y-445420 - 470 MHzReplaced by 7039420

SPECIFICATIONS

ELECTRICAL 
FREQUENCY RANGE67 - 470 MHz
INPUT IMPEDANCE50Ω
BANDWIDTH± 6% of centre frequency
SWR<1.5:1
FRONT TO BACK RATIO13 dB
MAXIMUM INPUT POWER150 Watts
POLARISATIONVertical & horizontal
FORWARD GAIN3 dBd
3 dB BEAMWIDTHE Plane 72º
H Plane 144º
MECHANICAL 
STANDARD CONNECTION3 m (118.11 in.) Length of RG 213
c/w \'N\' type socket
ELEMENTS UHFUHF 12.7 mm dia. x 1.6 mm
(0.50 in. dia x 0.06 in.)
wall aluminium alloy grade 6063T6
ELEMENTS VHFVHF 19.0 mm dia. x 1.6 mm
(0.75 in. dia x 0.06 in.)
wall aluminium alloy grade 6063T6
SUPPORT BOOM31.7 mm dia. x 2.6 mm
(1.25 in. dia x 0.10 in.)
wall aluminium alloy grade 6082T6
FASTENERSStainless steel grade A2-70
SADDLE CLAMPSDiecast zinc alloy
INSULATOREpoxy resin encapsulant
LIGHTNING PROTECTIONDirect grounded
MOUNTING BRACKETSSee mounting accessories (not supplied)
TYPICAL WEIGHT (UHF)UHF 1.3 kg (2.87 lb.)
YPICAL WEIGHT (VHF)VHF 3.5 kg (7.71 lb.)
TYPICAL LENGTH (UHF)UHF 0.6 m (23.62 in.)
TYPICAL LENGTH (VHF)VHF 1.5 m (59.06 in.)
TYPICAL WIND LOADING
@ 162 km/h (UHF)
UHF 50 N
TYPICAL WIND LOADING
@ 162 km/h (VHF)
VHF 180 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)

 

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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