NVIS (near vertical incidence skywave) System providing local area marine or land communications via the HF skywave
Frequency range: 3-17 MHz NVIS band; Communications range: 0-1200 km (750 miles), adjustable; EMP overvoltage horn gap system; Optional automatic frequency tuner with fast recall for ALE systems and built-in filters; Power capability: 150w CW, 300w PEP, depending on ATU capability; Power capability: 150w CW, 300w PEP; DC power requirement 12v (optional 24v) @ 900mA; Size: 1m high x 2m wide (3.3 x 6.6 ft). more

Passively simulates marine or land based 10.7m/35ft high power antenna for teaching, demonstration or test operation of transmitters and antenna tuning units without radiating RF
Size overall: 420x545x240mm (16.5x21.5x9.5in); Frequency range: 1.6-30 MHz, no band switching required; Power capability: 1kW CW maximum; AC power requirement 220/240v AC, single phase, 6A max, 50 Hz; Rack mounting or stand alone. more

High power high endurance whip for vessels over 40m (130ft), especially naval ships - 107B/1:NSN 5985/66/137/0889, 107BS/1 NSN:5985/66/137/0890
Overall length 10.67m (35ft); Frequency range 1.6-30 MHz with ATU; Wind survival 240km/h (150mph); Power rating (CW) 1kW, features unique Moonraker; Base mounted with base (type 107B/1) or side feed (type 107BS/1); more

High power, high endurance whip for vessels over 18m (60ft), especially navy ships - NSN 5985/66/129/1426
Overall length: 7m (23ft); Frequency range 1.6-30 MHz with ATU; Wind survival 250km/h (156mph); Power capability (CW) up to 1kW, features unique Moonraker corona shield; Base mounted. more

High performance for vessels over 18m (60ft) not subject to cyclonic conditions, patrol boats, etc. - NSN 5985/66/126/2671
Overall length: 8.8m/29ft; Frequency range 2-30 MHz with ATU, available unloaded or loaded to 1-3 frequencies; Power capability (PEP) unloaded/loaded-1kW, trapped-500w; Side mounted. more

Versatile local area and distance communications for vessels over 18m (60ft)
Features laydown facility for horizontal operation to overcome skipzone problems; Overall length: 7m (23ft); Frequency range 1.6-30 MHz with ATU, available unloaded or loaded to 4.6 MHz; Wind survival 250km/h (156mph); Power capability (PEP) unloaded-800w, loaded-500w, high power model available; Base mounted with heavy duty aluminium laydown mount for horizontal and vertical operation; Optional joint sealing kit available. more

High performance for vessels over 10.5m (34.5ft) and high speed vessels over 18m (60ft) - NSN 5985/66/126/2672
Overall length: 6.7m/22ft; Frequency range 2-30 MHz with ATU, available unloaded or loaded to 1-2 frequencies; Power capability (PEP) unloaded/loaded-1kW, trapped 500w; Side mounted. more

High performance for vessels over 8.8m (29ft) -
18W: NSN 5985/66/130/6819, 18B: NSN 5985/66/135/1696
Overall length: 5.5m (18ft); Frequency range 2-30 MHz with ATU, available unloaded or loaded to 1 frequency; Power capability (PEP) unloaded-800w, loaded-600w; Base (type 18B) more , Side (type 18W) more ; or Swingdown mounted (type 18S/D) more .

High performance for smaller and high speed vessels over 5.5m (18ft)
Overall length: 4.6m (15ft); Frequency range 2-30 MHz with ATU, available unloaded or loaded to 1 frequency; Power capability (PEP) unloaded-500w, loaded-300w; Side (type 15W) more ; or Swingdown mounted (type 15S/D) more .

Compact performance for smaller, trailed and high speed craft under 5.5m (18ft) and emergency removable antenna - 12S/R: NSN 5985/66/130/6862
Overall length: 3.65m/12ft; Frequency range 2-30 MHz with ATU, available unloaded or tuned to 1 frequency; Power capability (PEP) unloaded-400w, loaded-250w; Side (type 12W) more ; or Swingdown (type 12S/D) mounted more ; and emergency removable base mounted antenna (type 12S/R) more .

Tactical portable mast and semi-delta wire antenna system for tactical short to medium range communications - NSN 5985/66/107/9535
Mast height erected: 9m (30ft) [6m (20ft) version supports HF tactical manpack type HF M2-30P below]; Guy radius: 5-6m (16.4-19.7ft); Variable height mast length (frequency) and variable sloping wire radiator with base insulator to permit use as a vertical radiator; Frequency range 6.6-30 MHz; Impedance 50 ohms unbalanced nominal; Supplied completewith halyard pulley, guy stakes, hammer and heavy duty canvas carry bag; colour: military drab olive green. more

Compact efficient broadband wire type tactical military manpack antenna for short to medium distance communications
Inverted V configuration: supported by mast (eg Moonraker type 6MPM, 6m version of type 9MPM above), tree or building, etc, [minimum 4m (13ft)] and 2 x metal earth stakes (supplied) spaced 27m (90ft) apart; Throwing line, weight and spool for fast deployment; 30m (98 ft) interconnect cable to maximise performance over poor ground; Frequency range 2-30 MHz; Impedance 50 ohms (nominal); Power capability 50w(CW) 100w (PEP) higher to order; Max gain better than 4dBi; Radiation pattern high angle omnidirectional (azimuth); Antenna wind survival 200km/h (125mph), system survival dependent on tower/mast capability; Water resistant instructions, hammer and camouflage pack; . 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 .

Professional/military permanent omnidirectional high power wire base station for short/medium/long range communications
Dimensions: base area-85x85m (278.9x278.9ft) approx, main mast height-20m (65.6ft), system normally configured to suit site and communications parameters; Frequency range 2-30 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 - NSN 0751/28/001/2258
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 - NSN 0751/28/001/2419
Overall length: 9.5m (32ft); Guy radius: 4m (13ft) minimum (two sets of guys); 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 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

NVIS (near vertical incidence skywave) System providing local area mobile communications for vehicles via the HF skywave
Frequency range: overall 2-30MHz, 3-17 MHz NVIS band; Communications range: 0-1200 km (750 miles), adjustable; EMP overvoltage horn gap system; Optional automatic frequency tuner with fast recall for ALE systems and built-in filters; Power capability: 150w CW, 300w PEP, depending on ATU capability; Optional base plte 2100 x 200 x 8mm (8.3 x 7.9 x 5/16 in); Size: Height 1m (39.3 in)to top of radiator at centre, spacing between base insulators 1.88m 74 in), breaks down into 3 short sections. more

Multi-band VHF/UHF sea/ground to air omnidirectional biconical tactical system for military vessels, including VHF marine band, UHF cellphone bands, 225-400 UHF tactical band and 960-1215 MHz Link 16 band
Overall dimensions: 589mm (h) x 400 mm (dia) (23.2 x 15.75 in); Frequency range VHF 150-1300 MHz; Power rating 500W (CW); VSWR <2:5 over entire bands, typically 1.5:1; Gain -1.7 to 4.1 dBi over entire bands; Polarisation: slant giving horizontal and vertical patterns; Wind survival: 185km/h (116 mph). more

Collapsible log periodic type multi-band array with folding elements for fast deployment transceiver communictions in the field
Boom length 2m (6.6ft); Elements: 25 elements, maximum length 1.5m (439ft); Frequency range 50-1500 MHz; Power capability (PEP) 1kW; VSWR 2:1 over frequency range; Polarisation variable according to installation; N type coaxial connector. more

Rugged and reliable rubber duckie type VHF compact broadband tactical systm for short range hand held and back pack transceiver communictions
Length: overall 400mm (15.7 in), radiator 335mm (13.2 in); Frequency range 30-90 MHz; Power capability (PEP) 10w; VSWR better than 2.8:1 over frequency range, typically less than 2.5:1; Polarisation vertical; Connection direct to transceiver via coaxial connector (range available to suit transceiver) . more

Collapsible full length whip for improved communications over battlewhips, where conditions permit deployment
Element length: extended approx. 2.5m (8.2ft), disassembled approx. 410mm (16.1 in); Frequency range 30-88 MHz; Similar to US Army specifications AT- 271A/PRC; Spring loaded shock cord for fast field deployment; Gooseneck coupling: either coaxial or screw connector at radio interface; Gooseneck length: 280mm (11 in); Optional carry case 440x50x40 mm (17.3x2x1.6 in) approx. more

VHF centre fed wire dipole 30-88 MHz for temporary quick erection field base station communications
Element lengths: adjustable 2.5-0.8m (8.2-2.6ft), overall 5-1.6m (16.4-5.3ft); Halyard ropes: dark green, 2 x 25m (82ft, with throwing weights; Element material: Kevlar fibre strengthened tinned copper PVC coated flexible wire; 12m (39ft) connecting cable to maximise performance; Frequency range 30-88 MHz; Maximum power rating (CW) 25w; Polarisation, vertical or horizontal; Connection: 12m (39ft) coaxial cable to coaxial connector at radio; Water resistant instructions; Camouflage canvas carry pack size: 85x250x220mm (3.3x9.8x8.7 in) approx. more

VHF broadband end fed dipole for tactical land mobile vehicles and base stations
Suitable for frequency agile and fixed frequency transceivers, no tuning required; Fully compatible with standard NATO specifications; Overall length: approx. 2.8m (9.2ft); Frequency range 30-88 MHz; Power rating 70w ; VSWR less than 3.5:1; Gain (approx) better than -5 dBi at 30 MHz to +1.0 dBi at 88 MHz; Polarisation: vertical; Pattern: omnidirectional in azimuth plane; Ground: normally provided by vehicle chassis, optional ground kit avaialble for base station use; Connection: BNC female coaxial flylead connector in base, DC grounded. more

Marinised VHF ground independent broadband centre fed dipole for mobile vessels and base stations
Overall length: approx. 3.2m (10.5ft); Frequency range 30-88 MHz; Power rating (CW) 100w; VSWR less than 3.5:1; Gain (approx) better than -10 dBi at 30 MHz to +1.0 dBi at 88 MHz; Polarisation: vertical; Connection: BNC female coaxial flylead connector in base, DC isolated. more

VHF high band dipole for mobile vessels and base stations - side mounted: NSN 5985/66/138/7764, spring mounted: NSN 5985/66/138/7764
Overall length: approx. 1.67m (5.5ft); Frequency range 146-180 MHz, pretuned to frequency, normally Marine Channel 16 156.8 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; Base, Side, Swingdown or or Spring mounted. more

VHF low band dipole for mobile vessels and base stations - side mounted: NSN 5985/66/137/9525 40-145 MHz
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, side or swingdown mounted. more

High gain longer range VHF high band colinear for mobile vessels and base stations
Overall length: approx. 2.6m (8.5ft); Frequency range 118-170 MHz, pretuned to required frequency; Power rating (CW) 75w; VSWR better than 1.2:1 at centre frequency; Gain 5 dBi; Bandwidth 10 MHz at 1.8:1 VSWR; Side mounted. more

VHF 1/2 wave dipole radome enclosed base station for cyclonic wind velocities, tropical atmospheres and areas subject to ice build-up
Overall length: approx. 2.07m (6.7ft), frequency dependent; 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. more

Rugged wide band VHF ground plane antenna for marine vessels and base stations and ground to air communications
Overall length: 1.2m/3.9ft; Frequency range: Aircraft Band 118-136 MHz or Marine Band 150-168 MHz, pretuned to frequency, other frequencies to order; 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. more

Rugged broadband VHF ground independent dipole antenna for professional ground to air marine mobile and land base stations communications
Designed to military specifications; 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

Heavy duty 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 or special connector to suit specific radios. more

Dual Band UHF multi element broadband tactical discone system for omnidirectional ground/sea to air Airband communications
Overall dimensions: 750 x 840mm dia (29.5 x 33in); Frequency range VHF 113-174 MHz and UHF 225-400 MHz; Power rating 100W (CW) 440W(PEP; VSWR <2:5 over entire bands; Gain up to 2.5 dBi over entire bands; Wind survival: 160km/h (100 mph); Mounting via side clamps. more

Broadband UHF multi element tactical discone system for omnidirectional ground/sea to air Airband communications
Overall dimensions: 410 x 400mm dia (16 x 15.7 in); Frequency range 225-400 MHz UHF Airband; Power rating 100W (CW) 400W PEP; VSWR <2:1 over entire band; Gain +/- 2 dBi minimum over entire band; Wind survival: 160km/h (100 mph); Mounting via side clamps. more

Broadband UHF multi element tactical discone system for omnidirectional ground/sea to air Airband communications
Overall dimensions: 410 x 400mm dia (16 x 15.7 in); Frequency range 450-550 MHz UHF Airband; Power rating 100W (CW) 400W PEP; VSWR <2:1 over entire band; Gain +/- 2 dBi minimum over entire band; Wind survival: 160km/h (100 mph); Mounting via side clamps. more

Broadband UHF tactical ground independent conal type system for omnidirectional ground/sea to air Airband vehicular mobile and base station communications
Overall dimensions: 335 x 375mm dia (13.2 x 14.8 in); Frequency range 225-400 MHz UHF Airband; Power rating 100W (CW) 440W PEP; VSWR <1.9:1 over entire band; Gain +/- 2 dBi minimum over entire band; Wind survival: 160km/h (100 mph); Mounting: magnet vehicle mount 500 x 800mm (19.7 x 3.2 in), or base station mounting pole 300 x 25.4mm dia (requires clamps). 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

Heavy duty 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 or special connectors to suit specific radios. more

Broadband HF tactical manpack receiving system
Frequency range 3-30 MHz; Pattern: according to deployment configuration, well suited to receive NVIS, long distance and short range ground wave; Polarisation: vertical or horizontal; Impedance (output) 50 ohms (nominal); Element Lengths: 2 x 15m (50ft) Kevlar strengthened wire radials on fast deployment reels; Lightweight carry bag. more

Active broadband receive system
Frequency range: Active Monopole 10 kHz to 30 MHz, Active Dipole 1.5-30 MHz; Pattern: Active Monopole omnidirectional (vertical), Active Dipole bi-directional (horizontal); Gain: Active Monopole 6dB (50 ohm load)gain (nom), Active Dipole 6dB (50 ohm load) differential voltage gain (nom); Impedance (output) 50 ohms (nominal); Output intercept point: 2nd order 66 dBm, 3rd order 36 dBm; Overall Antenna Length: 3.65m (12ft)with 3m (9.8ft) support mast or 2.65m (8.7ft) with 2m (6.6ft); Lightweight carry bag . 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

Directional 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; Available with Flexible cables for tactical situations; Optional erection kit available. more

Multi-media receiving system for Multi-users
Truly flexible system with uniform picture quality - no matter how large the network. Amplified TV/FM, with or without Cable TV; audio/video signal distribution from VCRs, cameras, satellite receivers and AM/FM tuners; Distribution network designed to your layout; all accessories. Download a brochure : 535KB

Active broadband LF/MF/HF whip with single or multiple outlets for marine vessels and base stations
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 marine vessels and base stations in weak signal locations including crew quarters
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

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