High efficiency wire capacitive top antenna system for professional Non-directional Beacon/Differential GPS and Navtex fixed stations up to 500 KHz
System requires two end support towers/masts, free standing or guyed (option). We design for your situation. Typical specifications are: antenna efficiency 30.0% at frequency 320 KHz
Antenna: Effective height 21.5m (70.5ft); Frequency range 250-500KHz with ATU; Wind survival 240km/h (150mph) (no ice); Power capability (CW) 1kW plus 100% amplitude modulation.
Optional erection kit; Earth mat custom designed to suit site conditions; Required support structures: overall height 27m/88.6ft, approx distance apart 80m/260ft. more
GMDSS HF Marine Antennas

professional high wind survival NDB system for helidecks on buildings and offshore platforms
Overall length: variable, frequency/site dependent; Extends around perimeter of helicopter landing pad at or below deck level with two operational positions (horizontal or down vertical) and installation/maintenance position (up vertical) ; Frequency range 200-500 KHz Aircraft Band with ATU (other frequencies available); Wind survival 230km/h (144mph); Power rating (CW) 150w plus100% amplitude modulation; Tubular standoff insulators may be bolted or welded to helideck safety net supports. more

High efficiency guyed vertical system for professional Non-directional Beacon/Differential GPS/low power AM Broadcast fixed and temporary stations
Overall length: 15m (50ft); Frequency range 250-3000 KHz with ATU; Wind survival 216km/h (134mph); Power capability: below 500 KHz/100w CW + 100% amplitude modulation, 500-3000 KHz/600w PEP/400w CW; Top loading radials/guy radials and coil for maximum efficiency; Guy radius 9m/29.5ft minimum; Optional hinged base mount to facilitate erection and maintenance; Earth mat custom designed to suit site conditions. more

High efficiency compact free standing vertical system for professional Non-directional Beacon/Differential GPS/low power AM Broadcast fixed stations, suitable for oil rigs, etc.
Overall length: 10m (32.8ft); Frequency range 300-2000 KHz with ATU; Wind survival 216km/h (134mph); Power capability 100w CW + 100% amplitude modulation; Top loading radials and coil for maximum efficiency; Guy radius 9m (29.5ft) minimum; Optional hinged base mount to facilitate erection and maintenance; Earth mat custom designed to suit site conditions. more

Guyed portable mast/antenna for supporting lightweight wire systems, UHF yagis, and as a temporary HF antenna system
Base insulator permits mast to be used as vertical HF antenna
Overall length: 9m (29.5ft); Guy radius 5m (16ft) minimum; Frequency range 2-30 MHz with ATU, when used as temporary HF antenna; Optional heavy duty canvas carry bag. more

Tubular Collapsible Whip antenna for improved manpack paramilitary tactical communications
Length: extended 3m (9.85ft)approx, 3.14m (10.3ft) with gooseneck, disassembled 320mm (12.6 in) approx.; Frequency range 2-30 MHz with ATU; Polarisation: vertical; Colour/Finish: drab olive green or black polyurethane paint. more
Optional 200mm (7.9 in) Gooseneck Coupling (coaxial or screw connection) available to suit transceiver; Portable manual ATU available type MATU

Frequency agile antenna for HF land mobile communications - Suits most HF transceiver types and all types vehicles including forward control vehicles.
Comprises type AT230 antenna, AT104 control unit & ATE4 4 metre control cable. Antenna length: 1.3m (4.3 ft)with 1.25m (4.1 ft) removable stainless steel whip top, total: 2.55m (8.4 ft); Frequency range: infinite between 2-30 MHz, continuously variable; Polarisation: vertical or part horizontal (NVIS) possible; Pattern: omnidirectional; Input impedance 50 ohms (nominal); Power rating: 140W PEP; Mounting: anti-vibration mount can be mounted low down on vehicle behind bull bar, on tow bar or centre windscreen pillar - does not obstruct vision. Control unit dimensions: 190 x 120 x 60mm (7.4 x 4.7 x 2.4 in); Mounting: anywhere in vehicle except engine bay; Voltage: 12V DC negative earth (nominal); Current: 60-100mA stand-by, 2A tuning (typical); more

Professional/military permanent omnidirectional high power wire base station for short/medium/long range communications
Dimensions: base area-85x85m (279x279ft) approx, main mast height-20m (66ft), system normally configured to suit site and communications parameters; Frequency range 2-20 MHz (other frequency ranges to order); Input impedance 50 ohms (nominal); Power capability (CW) 1kW; VSRW less than 2.0:1 over frequency range; Lightning protection included. more

Professional/military omnidirectional guyed base station for permanent/temporary long distance communications
Overall length: 9.5m (32ft); Guy radius: 3m (9.75ft) minimum; Frequency range 2-30 MHz with ATU; Power capability (PEP) unloaded/loaded 1kW, trapped 500w; Mounting: adjustable angle ground plate and spike, or adjustable angle building roof mount; Earth mat, ground plane and lightning protection available. more

Professional/military cyclone rated omnidirectional guyed base station for permanent/temporary long distance communications
Overall length: 9.5m (32ft); Guy radius: 4m (13ft) minimum (two sets of guys); Frequency range 2-30 MHz with ATU; Wind survival 240 km/h (150 mph); Power capability (PEP) unloaded/loaded 1kW, trapped 500w; Mounting: adjustable angle ground plate and spike, or adjustable angle building roof mount; Earth mat, ground plane and lightning protection available. more

Professional/commerical omnidirectional wire type semi-delta base station for permanent short to medium distance communications to 1700km/1060miles
Supported by a main mast 15m (49ft) type 15GM (see below), windmill tower, etc. at one end and a metal ground stake 2m (6.6ft) at the other end; Recommended distance between main support and metal stake 20m/65.6ft; Frequency range 2-14 MHz; Impedance 50 ohms (nominal); Power capability (PEP) 400w with 1.2kW PEP high power version; VSWR 1.8:1; UHF connector at lower end. more

Economical professional/commercial lightweight broadband wire type end fed antenna for short to medium distance communications
Inverted V configuration: supported by a single 10m (33ft) mast or tower and 2 x metal earth stakes (supplied) spaced 20m (66ft) apart, eg type 9MP (see below); Frequency range 2-30 MHz; Impedance 50 ohms (nominal); Power capability (CW) 100w, higher to order; Max gain better than 5dBi; Antenna wind survival 210km/h (130mph), system survival dependent on tower/mast capability. more

Professional/commercial broadband wire type folded dipole antenna for short to medium distance communications
50m (167ft) full version with stainless steel radiator (type HF FD230/50S) or 30m (98ft) compact version with stainless steel (type HF FD230/30S) or galvanised radiator, for low corrosion areas away from the sea and/or not subject to industrial pollution, (type HF FD230/30G) ; Masts: minimum height 9m (30ft), but recommend 2 x 15m (50ft) spaced 52m (170ft) apart (minimum) for Horizontal configuration, or for Inverted V configuration single 15m (50ft) mast or tower and 2 x 1m (3.3ft) metal stakes spaced 44m (144ft) full version or 12m (39ft) mast or tower and 2 x 1m (3.3ft) metal stakes spaced 23m (76ft) apart (minimum) compact version apart, eg type 15GM with optional horizontal stand-off support gibbet (see below) ; Frequency range 1.5-30 MHz full version 3-30MHz compact version ; Impedance 50 ohms (nominal); Power capability 250w PEP, with 50m 1kW PEP (type HF FD230/50SHP), and 1kW CW (type HF FD230/50SVHP) high power versions ; Max gain better than 5dBi; Antenna wind survival 210km/h (130mph), system survival dependent on tower/mast capability. more - 1kW CW Version

Professional/commercial broadband wire sloping triangle type antenna for directional medium to long range communications
Supported by one 15m (49ft) mast or towers with three 1m (3.3ft) baseline short masts; Mast to baseline spacing 50m (164ft) approx.; Frequency range 6-30 MHz; Impedance 50 ohms (nominal); Power capability 1kW PEP, other powers to order; Pattern: directional - high angle radiation below 8 MHz becoming increasingly more directional at lower angles above 8 MHz; Gain 2dBi at 6 MHz rising to 9 dBi at 30 MHz; VSWR <2.5:1; Antenna wind survival 200km/h (125mph), system survival dependent on tower/mast capability. more

Omnidirectional whip antenna systems
Omnidirectional marine whip antenna combined with a suitable earth system may also be used as high efficiency, heavy duty base station antenna.

Guyed portable mast for supporting wire systems, inverted Vs, yagis and VHF/UHF antenna systems
Overall length: 15m (50ft); Guy radius 7m (23ft); Wind survival 144km/h/90mph with 12kg headload; Optional erection kit with guy stakes and gin pole, easily erected by 2 men; Available without guys or with galvanised wire rope or pre-stretched polyester rope guys; Optional masthead gibbet, 300mm (11.8in) right angle extension to suspend inverted V antennas. more

Guyed portable mast for supporting wire systems, inverted Vs, yagis and VHF/UHF antenna systems
Overall length: 12m (40ft); Guy radius 6m (20ft); Wind survival 144km/h (90mph) with 12kg headload; Optional erection kit with guy stakes and gin pole, easily erected by 2 men; Available without guys or with galvanised wire rope or pre-stretched polyester rope guys; Optional masthead gibbet, 300mm (11.8in) right angle extension to suspend inverted V antennas. more

Guyed portable mast for supporting lightweight wire systems, inverted Vs, UHF yagis and temporary HF antenna
Overall length: 9m (29.5ft) in six 1.5m (4.9ft) slip together lengths - easy to erect and transport; Guy radius 5m (16ft); Supplied complete with guys and halyard; Nylon standoff insulator and connection screw permits use (with ATU and earth mat) as vertical HF antenna (self resonant at approx. 8 MHz); Optional base plate for use over soft ground; Optional protective heavy duty canvas carry bag. more

Professional quality 27MHz for Citizens Band base station
Overall Length: 2.7m (8.9ft); Frequency range 27.5-28 MHz; Power rating CW-25w, PEP-50w; Bandwidth 0.6 MHz at 2:1 SWR points; Base (type 27B) or Swingdown (type 27S/D) mounted. more

Professional 27MHz heavy duty helical whip (rubber duckie) for hand held portables
Approx length: 50.8m (20in); Frequency range 26-28 MHz, pretuned to frequency or untuned for adjustment on site; Bandwidth +/-5 MHz; UHF/BNC/TNC connector or with fitting to replace telescopic type antenna. more

VHF collapsible, portable dipole for temporary professional base stations, especially remote area and emergency services
Length: 1.2 to 2.1m (4 to 7ft), 4 to 7 x 300mm (12in) sections, dependent on frequency; Collapsible to 300mm (12in) section with fast shock cord deployment; Frequency range 70-180 MHz; Power rating (CW) 80w; VSWR better than 1.2:1 at centre frequency; Gain 2.2 dBi; Bandwidth 7.0 MHz at 1.5 SWR points. more

VHF high band dipole for professional base stations
Overall length: approx. 1.67m (5.5ft); Frequency range 146-180 MHz, pretuned to frequency, required; Power rating (CW) 80w; VSWR better than 1.2:1 at centre frequency; Gain 2.2 dBi; Bandwidth 7.0 MHz at 1.5 SWR points; Base or Side mounting. more

VHF low band dipole for professional base stations
Overall length: approx. 2.54m (8.3ft); Frequency range 40-145 MHz, pretuned to frequency; Power rating (CW) 80w; VSWR better than 1.2:1 at centre frequency; Gain 2.2 dBi; Bandwidth 7.0 MHz at 1.5 SWR points; Base or Side mounting models. more

High gain longer range VHF high band colinear for professional base stations
Overall length: approx. 2.6m (8.5ft); Frequency range 118-170 MHz, pretuned to frequency, normally Marine Channel 16 156.8 MHz; Power rating (CW) 75w; VSWR better than 1.2:1 at centre frequency; Gain 5 dBi; Bandwidth 10 MHz at 2:1 VSWR; Side mounted. more

VHF 1/2 wave dipole radome enclosed base station for cyclonic winds, tropical atmospheres and areas subject to ice build-up
Overall length: approx. 2.07m (6.7ft), determined by frequency; Frequency range 40-170 MHz, pretuned to frequency; Wind survival 230km/h (143.75mph) (no ice) or 170km/h (106.25mph) (with radial ice build-up); Power rating (CW) 80w; VSWR better than 1.2:1 at centre frequency; Gain 2.2 dBi; Bandwidth 7 MHz at 1.5 SWR points; Side clamps direct onto mounting pole or tower. more

Rugged wide band VHF ground plane antenna for professional ground to air marine mobile and land base stations communications
Designed to military specifications; Overall length: 1.2m (3.9ft) approx; Frequency range: Aircraft Band 118-136 MHz or Marine Band 150-168 MHz, pretuned to frequency; Wind survival to 230km/h (143mph); Power rating (PEP) 300w; VSWR 1.2:1 at centre frequency; Bandwidth 13 MHz at 1.7:1 VSWR; Side mounted with mounting tube; Optional radome; Also available for Air Band base station 118-136 MHz. more

Rugged broadband VHF ground independent dipole antenna for professional ground to air marine mobile and land base stations communications
Overall length: 1.5m (4.9ft) approx; Frequency range: Aircraft Band 118-136 MHz; Wind survival to 160km/h (100 mph)no ice and 80 km/h (50 mph) 25mm (1 inch) radial ice build up; Power rating (CW) 50w; VSWR typically 1.5:1, <2:1 at band edges; Bandwidth 19 MHz ; Base or side mounted (galvanised clamps or sidemount insulators), swingdown mounting available; more

Omnidirectional ground independent VHF/UHF low profile system for professional communications where it is not desirable to mount conventional types due to visual impact requirements or the need for antenna disguise
Radome: 360mm dia x 115mm high (14.2 x 4.5 in); Resembles a standard ceiling/flush mounted light fitting: suitable for shopping centres, hospitals, airports, railway stations, hotels and the like; Frequency range: VHF Band 148-174 MHz or UHF Band 400-500 MHz, pretuned to frequency; Bandwidth: VHF - better than 1 MHz at 1.5:1 VSWR expanding to 30 MHz at 2.0:1 VSWR, UHF - better than 15 MHz at 1.5:1 VSWR expanding to 2.5 MHz at 2.0:1 VSWR; Power capability: 50w CW; Polarisation: vertical; Mounts flush to mounting surface/ceiling via base flange screws with BNC connection socket. more

Omnidirectional ground dependent VHF/UHF low profile system for professional mobile communications, disguised to provide protection from hostile environments/harsh use
Antenna dimensions: 122mm x 900 mm at 70-85MHz to 460mm at 400-512MHz (4.8 x 36 to 18 in); Disguised as a typical hand rail, especially suitable for heavy underground mine machinery/vehicles, military transports and trains and the like; Frequency range: standard: VHF Band 148-174MHz or UHF Band 400-512MHz, also available 118-137MHz and 70-75MHz, pretuned to frequency; Bandwidth: 148-175MHz- better than 20MHz at 5:1 (3MHz at 1.5:1), 118-137MHz - better than 3MHz at 2:1, 70-85MHz - better than 1MHz at 2:1, UHF - better than 20 MHz at 2:1 VSWR; Power capability: 100w CW, higher to order; Polarisation: predominantly vertical; Mounts flush to mounting surface via screws through mounting plates. more

High gain, heavy duty, longer range UHF high band colinear for professional base stations
Overall length: approx. 1.5m (4.9ft); Frequency range 390-520 MHz, pretuned to specified frequency; Power rating (CW) 100w; VSWR <1.5:1 for 10 MHz Bandwidth; Gain 5+ dBi; Base, Side or Swingdown mounted; Connection: N type. more

Professional VHF HB or LB heavy duty helical whip (rubber duckie) for hand held portables
Approx length: HB-17.8cm (7in), LB-30.5cm (12in); Frequency range 50-180 MHz, pretuned to frequency or untuned for adjustment on site; Bandwidth +/-500 KHz; BNC/UHF/TNC connector and most other connectors to suit your radio. more

High gain longer range analogue, CDMA or digital cellular phone antenna for marine mobiles and fixed stations
Overall length: 1.62m (5.3ft); Frequency range 820-890MHz (type CEL800) 890-960 MHz (type CEL900); Power rating (PEP) 50w; VSWR better than 1.7:1 entire band; Gain +5 dBi; Base, Side or Swingdown mounted. more

Professional UHF heavy duty helical whip (rubber duckie) for hand held portables
Approx length: 13cm (5.125in); Frequency range 400-500 MHz, pretuned to frequency or untuned for adjustment on site; Bandwidth +/-500 KHz; BNC/UHF/TNC connector with other special connectors to suit your radio. more

Broadband VHF to UHF portable lightweight manpack system
Frequency range 30-500 MHz; Pattern: Omnidirectional, well suited to receive both direct and skywave signals; Impedance (output) 50 ohms (nominal); Length: 1200mm (3.9ft) in two 600m (2ft) fast deployment sections with four ground radials attached; Lightweight carry bag . more

Broadband LF to UHF guyed 4 outlet system
Frequency range 0.15-1500 MHz; Operation: 150 kHz-30 MHz - monopole, 30-100 MHz - elevated centre fed vertical dipole, 100-1500 MHz - elevated broadband discone; Pattern: azimuth - omnidirectional, elevation - 150 kHz-30 MHz 100-1500 MHz similar 1/4 wave monopole, 30-100 MHz similar 1/2 wave monopole; Overall Length: 10m (32.8ft); Impedance (output) 50 ohms (nominal); Guy system: 3 sets of RF transparent guys; Guy radius: 5m (20ft) recommended; Mounting: special ground plate spike and swivel mount; Optional erection kit available. more

Broadband LF to UHF compact guyed system for ground or roof mounting
Frequency range 0.15-1500 MHz; Operation: 150 kHz-30 MHz - monopole, 30-100 MHz - elevated centre fed vertical dipole, 100-1500 MHz - elevated broadband discone, with antenna interface unit providing 50 ohm coaxial outputs for each frequency range; Pattern: azimuth - omnidirectional, elevation - 150 kHz-30 MHz 100-1500 MHz similar 1/4 wave monopole, 30-100 MHz similar 1/2 wave monopole; Overall Length: 6m (20ft); ; Impedance (output) 50 ohms (nominal); Guy system: 3 sets of RF transparent guys; Guy radius: 5m (20ft) recommended; Mounting: special ground plate spike and swivel mount; Optional erection kit available. more

Broadband LF to UHF mobile system
Frequency range 0.15-1500 MHz; Operation: 150 kHz-30 MHz - active monopole, 30-100 MHz - dual element monopole, 100-1500 MHz - multi element vertical dipole; Pattern: azimuth - omnidirectional, elevation - 150 kHz-30 MHz and 30-100 MHz similar to 1/4 wave monopole, 100-1500 MHz similar to 1/2 wave monopole; Overall Length: 2.3m (7.5ft); Impedance (output) 50 ohms (nominal); Mounting: aluminium base and stainless steel steel spring mount; Optional erection kit available. more

Directional broadband LF to UHF guyed log periodic array Frequency range 50-1500 MHz; Operation: 50 MHz-1500 MHz - rotatable (90 degrees) 25 element log periodic array with foldable elements; Directionality: system may be rotated 360 degrees; Overall Length: 9m (29.5ft); Impedance (output) 50 ohms (nominal); Polarisation: vertical, horizontal or slant (adjustable); Mounting on ground or rooftop with special ground plate spike and swivel mount; Available with Flexible cables for tactical situations; Optional erection kit available. more

Direction broadband VHF to SHF guyed system
Frequency range 50-5000 MHz; Operation: 50 MHz-15000 MHz - log periodic array with removable elements, 1500-5000 MHz - compact log periodic; Directionality: system may be rotated 360 degrees; Overall Length: 9.8m (33ft); Impedance (output) 50 ohms (nominal); Polarisation: vertical, horizontal or slant (adjustable); Mounting on ground or rooftop with special ground plate spike and swivel mount; Also available with Flexible cables for tactical situations; Optional erection kit available. more

Active broadband LF/MF/HF single or multiple outlet system
Overall Length: 2m (6.6ft); Frequency range 0.07-30 MHz; Gain 10 dB; Impedance 75 or 50 ohm; Power supply: Single outlet (12v) or Multicoupler (12-28v) with 5 outlets cascading in multiples of four (eg 5, 9, 13...); Base mounted with side feed. more

Wide band MF/HF transformer for matching whips or wires to coaxial cable and receiver
Dimensions: 112x62x31mm (4.4x2.5x1.2in); Frequency range 0.28-30 MHz; Impedance 50 ohms; UHF SO239 connector in base; Straps onto antenna base or nearby structures. more

Broadband or single frequency MF reception for large buildings in weak signal and/or high noise locations especially schools, motels, betting shops, etc.
Overall Length: 4.7m (15ft); Frequency range 530-1650 KHz, easily tuned on site; Impedance 75 ohm; Matching transformer screws into base; Side mounted. more

Directional MF loop antenna system for improving weak signals competing with strong local signals or areas subject to noise interference
Dimensions: 600mm (2ft) x 12.5mm (1/2in) dia square loop with 760mm (2.5ft) mounting pole; Pattern: figure 8 with maxima in plane of loop and minima at 90 degrees to plane of loop; Polarisation vertical; Frequency range 530-1650 KHz, pretuned to frequency or easily tuned on site; Impedance 75 ohms. more

Active compact 1/2 wave quadrifilar helix receiving antenna providing greater capture area for circular polarised transmissions from satellites, including military and weather satellites
Dimensions vary with frequency: at 137 and 243 MHz height830mm (2.7ft), diameter 150mm (6in); Frequency range tuned to specific frequency in VHF/UHF bands; Gain 0 dBi C (without preamplifier), amplifier gain 20dB (nominal); Impedance 50 ohm; Power supply: 12v DC 100mA (approx.); VSWR: better than 1.5:1; Pattern: elevation - hemispherical, azimuth - omnidirectional; Mounted via aluminium mounting pole, suitable for clamping or strapping to mast or superstructure. more

Active compact non-directional VHF/UHF TV and AM/FM Radio reception for professional and pleasure craft
Truly omnidirectional with separate VHF and multiple UHF arrays; Height: 185mm (7.3in) Diameter: 380mm (15in) radome with 405 x 25.4 mm dia(16 x 1in dia) mounting tube; Frequency range 40-850 MHz (all international TV channels) with band stop filter to reduce interference from VHF marine transmitters; Amplifier gain 26 dB, UHF 34dB; Impedance 75 ohm; Power supply: 12-24v; Control unit has AM/FM combiner and is reverse polarity protected; Mounted via optional base mounting flange or side clamps to mounting tube. more

Active compact non-directional VHF/UHF TV reception for professional and pleasure craft
Truly omnidirectional with separate VHF and multiple UHF arrays;Height: 185mm (7.3in) Diameter: 380mm (15in) radome with 405 x 25.4mm dia (16 x 1in dia) mounting tube; Frequency range 40-850 MHz (all international TV channels) with band stop filter to reduce interference from VHF marine transmitters; Amplifier gain 26 dB, UHF 34dB; Impedance 75 ohm; Power supply: 12v; Control unit reverse polarity protected; Mounted via optional base mounting flange or side clamps to mounting tube. more