These antennas are ideal for wide band applications and can be stacked vertically and fed in phase using two/four dipoles a gain of 3 dB/6 dB respectively can be obtained.
SPECIFICATIONS
Gain over 1/2 wave Dipole Unity
V.S.W.R Better than 1-5:1 over the operating Band
Maximum Input Power Rating 150watts
input impedance 50OHMS
Bandwidth + 1 5% of center frequency
Polarization Vertical or horizontal
Connection 3 metre length of RG213 fitted with N type socket & PVC sleeve
Support Boom 1 1/4" x 12swg Aluminium Alloy Tube
HE30TF
Radiating Elements 3/4" x 16swg Aluminium Alloy Tube HE9TF
Castings Aluminium Alloy Kemloc
Insulator Black Carbon Polyethylene
Nuts & Bolts 18/8 Stainless Steel & Nyloc Nut A2
Weight 2.3 Kgs
Windloading 7.0 Kgf (1 5.4 lbf) @ wind velocity of 160 Kph
These antennas are ideal for wide band applications and can be stacked vertically and fed in phase using two/four dipoles. A gain of 3 dB/6 dB respectively can be obtained.
SPECIFICATIONS
Gain over 1/2 wave Dipole Unity
V.S.W.R. Better than 1.5:1 over the operating Band
Maximum Input Power Rating 150 watts
Input Impedance 50 OHMS
Bandwidth ± 11 % of center frequency
Polarisation Vertical or horizontal
Connection 3 metre length of RG213 fitted with N type socket & PVC sleeve
Support Boom 1 1/4" x 12swg Aluminium Alloy Tube HE30TF
Radiating Elements 1/2" x 16swg Aluminium Alloy Tube HE9TF
Castings Aluminium Alloy Kemloc
Insulator Black Carbon Polyethylene
Nuts & Bolts 18/8 Stainless Steel & Nyloc Nuts A2
Weight 1.5 Kgs
Windloading 5 Kgf (1 1 lbf) @ wind velocity of 160 Kph
These antennas can be stacked and fed in phase with a matching harness for increased gain.
SPECIFICATIONS
Gain over 1/2 wave Dipole 6dB
V.S.W.R. Better than 1.5: 1 over the operating Band
Input Impedance 50 OHMS
Maximum Input Power Rating 200 watts
Bandwidth ± 7% of center frequency
Polarisation Vertical or horizontal
Half Power Beamwidth E Plane 600
H Plane 820
Front to Back Ratio 18dB
Connection 3 metre length of RG213 fitted with N type socket & PVC sleeve
Support Boom 1 1/4" x 12swg Aluminium Alloy Tube HE30TF
Radiating Elements 3/4" x 16swg Aluminium Alloy Tube HE9TF
Castings Aluminium Alloy Kemloc
Nuts & Bolts 18/8 Stainless Steel with Nyloc Nuts
Insulator Black Carbon Loaded Polyethylene
Windloading
Weight @ 7OMHz 4.5 Kgs 22 Kgf @ wind Velocity of 160 Kph
@ 106MHz 3.9 Kgs 13.1 Kgf @ wind Velocity of 160 Kph
@ 139MHz 3.1 Kgs 12 Kgf @ wind Velocity of 160 Kph
@ 165MHz 2.5 Kgs 8.5 Kgf @ wind Velocity of 160 Kph
@ 19OMHz 2.0 Kgs 7.4 Kgf @ wind Velocity of 160 Kph
These antennas can be stacked and fed in phase with a matching harness for increased gain.
SPECIFICATIONS
Gain over 1/2 wave Dipole lOdB
V.S.W.R. Better than 1.5:1 over the operating Band
Input Impedance 50 OHMS
Maximum Input Power Rating 200 watts
Bandwidth ± 4% of center frequency
Polarisation Vertical or horizontal
Half Power Beamwidth E Plane 40' H Plane 50'
Front to Back Ratio 20 dBs
Connection 3 metre length of RG21 3 fitted with N type socket & PVC sleeve
Support Boom 1 1/4" x 12swg Aluminium Alloy Tube HE30TF
Radiating Elements 1/2" x 16swg Aluminium Alloy Tube HE9TF
Castings Aluminium Alloy Kemloc
Nuts & Bolts 18/8 Stainless Steel with Nyloc Nuts
Insulator Black Carbon Loaded Polyethylene
Weight @ 3kgs
Windloading @ 440 MHz 12 Kgf (26.5lbf) @ wind velocity of 160 Kph
UHF DOWNFIRE ANTENNA
It consists of two half wave dipoles at 90 degrees of each other and fed in phase with a matching harness.
This antenna is very robust and can withstand the harshest environmental conditions.
This antenna can be easily installed and with a bandwidth of 25 MHz it can operate both on transmit or receive frequencies without the loss of performance.
SPECIFICATIONS
Gain over 1/2 wave Dipole 6dB
V.S.W.R. Better than 1.5:1 over the operating Band
Maximum Input Power Rating 200 watts
Input Impedance 50 OHMS
Bandwidth ± 4% of center frequency
Polarisation Vertical
Half Power Beamwidth 90' E & H Plane
Connection N type socket
Mounting Boom 1 1/2" x 18swg Aluminium Alloy Tube
Radiating Elements 3/8" diameter aluminium Rod
Nuts & Bolts 18/8 Stainless Steel A2
Insulator Black Carbon Loaded Polyethylene
Length 0.8 metres
Weight 1.0 Kgs (2.2 lbs.)
Windloading 5 Kgf C@ wind velocity of 160 Kph
UHF 4 STACK ARRAY
AVAILABLE WITH 5 OR 10 DEGREE ELECTRICAL DOWN TILT
The array comprises of four vertical dipoles mounted on a 1 1/2" O.D. dia. x 10 swg aluminium support boom forming this antenna. The dipoles are fed in phase by a special matching harness which can incorporate a 5 or 10 degree down tilt. Completely seal moulded in black carbon loaded polyethylene. The dipoles can be orientated from their omnidirectional position to one side of the boom (vertically in line) to give directional coverage.
These antennas can be stacked one above the other for talkthrough/duplex working. Special mounting kits are available on request for stacking these antennas.
SPECIFICATIONS
Gain over 1/2 wave Dipole Omni-directional 5.5 dB
Directional 7.5 dB
V.S.W.R. Better than 1.5:1 over the
operating Band
Maximum Input Power Rating 250 watts
Input Impedance 50OHMS
Bandwidth ± 7% of center frequency
Polarisation Vertical
Connection 3 metre length of RG21 3 fitted with
N type socket & PVC sleeve
Mounting Boom 1 1/2" x 1 Oswg Aluminium Alloy Tube HE30TF
Radiating Elements 1/2" x 16swg Aluminium Alloy Tube HE9TF
Castings Aluminium Alloy Kemloc
Insulator Black Carbon Loaded Polyethylene
Nuts & Bolts 18/8 Stainless Steel & Nyloc Nut
Length 90" (2.3 metres)
Weight 5 Kgs
Windloading 12.5 Kgf @ wind velocity of 160 Kph
These antennas are most suited for mast head fixing for omnidirectional applications, but can also be side mounted to give some degree of directivity. Collinear stand-off brackets can be supplied as an optional extra.
SPECIFICATION
Gain over 1/2 wave Dipole 3dB
V.S.W.R. Better than 1.5:1 over the operating Band
Maximum Input Power Rating 150 watts
Input Impedance 50 OHMS
Bandwidth ± 2% of center frequency
Polarisation Vertical
Half Power Beamwidth 320
Connection 500mm length of RG213 terminated N type socket and PVC sleeve
Radiating Elements Brass rod plasfilm coated
Encapsulation Reinforced glass fibre tube
Length 1. 1 60 metres @ 460 MHz
Weight 1. 1 Kgs
Windloading 6.4 Kgf @ wind velocity of 16OKph
These antennas are most suited for mast head fixing for omnidirectional applications, but can also be side mounted to give some degree of directivity. Collinear stand-off brackets can be supplied as an optional extra.
SPECIFICATION
Gain over 1/2 wave Dipole 6dB
V.S.W.R. Better than 1.5:1 over the operating Band
Maximum Input Power Rating 150 watts
Input Impedance 50 OHMS
Bandwidth ± 2% of center frequency
Polarisation Vertical
Half Power Beamwidth 180
Connection 450mm length of RG213 fitted with N type socket and PVC sleeve
Encapsulation Reinforced tapered glass f ibre tube
Mounting Brackets CVB type - supplied
Mounting Stub 1 3/4" x 10 swg Aluminium Alloy Tube H E30TF
Length 1 Oft (3.05 metres)
Weight 3 Kgs
Windloading 12.2 Kgf (27.2 lbf) @ wind velocity of 160 Kph
6 dB GAIN OVER 1/2 WAVE DIPOLE
These antennas are most suited for mast head fixing for omnidirectional applications, but can also be side mounted onto structures to give some degree of directional characteristics. Collinear standoff brackets can be supplied ex stock.
SPECIFICATION
Gain over 1/2 wave Dipole 6dB
V.S.W.R. Better than 1-5:1 over the operating Band
Maximum Input Power Rating 150 watts
Input Impedance 50 OHMS
Bandwidth +- 4% of center frequency
Polarisation Vertical
Half Power Beamwidth 17'
Connection 500mm length of RG213 fitted with N type socket complete with PVC sleeve
Encapsulation Reinforced tapered glass fibre tube low alkali
Radiating Elements Brassrod
Support Base Tube 1 1/2" x 1Oswg Aluminium Alloy Tube HE30TF
Length 1.3 metres
Weight 1.2 Kgs
Windloading 3.6 Kgf @ wind velocity of 160 Kph
Please not this list is not exhaustive, but an illustration of the more commonly used types of antenna.