SELECT SPECIFICATION
MK II-PT-3 MK II-PT-5

MK II-PT-5L

MK III-PT-3

MK III-PT-5

MK IV-PT-3 MK IV-PT-5

MK IV-PT-5L

MANTIS 40-II

MANTIS 40-IIL

 

2 METER

6 METER ELECTRICAL SPECS MECHANICAL SPECS

MK II = 2 Elements, MK III = 3 Elements, MK IV = 4 Element, "L" = Long Boom,
PT = Pre-Tuned, PTT = Pre-Tuned/with Transformer
For more information call - 616-622.4968

 

MK II-PT-3

MK II-PT-5

  • Number Elements = 2
  • Bands = 3
  • Weight LBS = 35
  • Turn Radius = 10.1 ft
  • Gain dbi = 7-9
  • FBR = 20-30
  • Beam Width (hpp) = 60deg
  • Wind Load ( sq. ft.) = 5.5
  • Boom Length = 8'
  • Boom Dia = 2"
  • Spreader Arm Type = FG
  • Number Elements = 2
  • Bands = 5
  • Weight LBS = 38
  • Turn Radius = 10.1 ft
  • Gain dbi = 7-9
  • FBR = 20-30
  • Beam Width (hpp) = 60deg
  • Wind Load ( sq. ft.) = 5.8
  • Boom Length = 8'
  • Boom Dia = 2"
  • Spreader Arm Type = FG

MK III-PT-3

MK III-PT-5

  • Number Elements = 3
  • Bands = 3
  • Weight LBS = 50
  • Turn Radius = 13 ft
  • Gain dbi = 10-12
  • FBR = 25-30
  • Beam Width (hpp) = 55deg
  • Wind Load ( sq. ft.) = 7.0
  • Boom Length = 18'
  • Boom Dia = 3"
  • Spreader Arm Type = FG
  • Number Elements = 3
  • Bands = 5
  • Weight LBS = 55
  • Turn Radius = 13 ft
  • Gain dbi = 10-12
  • FBR = 25-30
  • Beam Width (hpp) = 55deg
  • Wind Load ( sq. ft.) = 7.4
  • Boom Length = 18'
  • Boom Dia = 3"
  • Spreader Arm Type = FG

MK IV-PT-3 MK IV-PT-5 MK IV-PT-5L
  • Number Elements = 4
  • Bands = 3
  • Weight LBS = 66
  • Turn Radius = 14.5 ft
  • Gain dbi = 11-13
  • FBR = 25-30
  • Beam Width (hpp) = 50deg
  • Wind Load ( sq. ft.) = 10.5
  • Boom Length = 24'
  • Boom Dia = 3"
  • Spreader Arm Type = FG
  • Number Elements = 4
  • Bands = 5
  • Weight LBS = 69
  • Turn Radius = 14.5 ft
  • Gain dbi = 11-13
  • FBR = 25-30
  • Beam Width (hpp) = 50deg
  • Wind Load ( sq. ft.) = 10.9
  • Boom Length = 24'
  • Boom Dia = 3"
  • Spreader Arm Type = FG
  • Number Elements = 4
  • Bands = 5
  • Weight LBS = 72
  • Turn Radius = 18 ft
  • Gain dbi = 12-13
  • FBR = 25-30
  • Beam Width (hpp) = 50deg
  • Wind Load ( sq. ft.) = 12.0
  • Boom Length = 29.5'
  • Boom Dia = 3"
  • Spreader Arm Type = FG

MANTIS 40-IIS MANTIS 40-IIML

MANTIS 40-II; 4L5B

  • 40m Elements = 2
  • Bands = 1
  • Weight LBS = 75+
  • Turn Radius = 20 ft
  • Gain dbi = 6+
  • FBR = 20-30
  • Beam Width (hpp) = 60deg
  • Wind Load ( sq. ft.) = 16
  • Boom Length = 15'
  • Boom Dia - 3"
  • Spreader Arm Type - 2pc FG
  • 40m Elements = 2
  • Bands = 1
  • Weight LBS = 85
  • Turn Radius = 22 ft
  • Gain dbi = 7+
  • FBR = 20-30db
  • Beam Width (hpp) = 55deg
  • Wind Load ( sq. ft.) = 20
  • Boom Length = 24'
  • Boom Dia = 3"
  • Spreader Arm Type - 2pc FG
  • 40m Elements = 2; 
    10 thru 20m - 4 elements
  • Bands = 1-6
  • Weight LBS = 145+
  • Turn Radius = 24 ft
  • Gain dbi = 40m, 7+
  • FBR = 18-30db
  • Beam Width (hpp) = 55deg
  • Wind Load ( sq. ft.) = 23
  • Boom Length = 30'
  • Boom Dia - 3"
  • Spreader Arm Type - 2pc FG

Matching All Elements to a Single 50 Ohm Feed Line:

Preferred Method for best Bandwidth and power handling:  All elements may be connected through a single feed line and a remote antenna switch. Some bands require the use of odd 1/4 wave 75 ohm coax matching sections (available from Cubex). Full instructions accompany each antenna. Want more information on a Remote Antenna Switch?

Remote Control Antenna Switch by Ameritron Go To

Alternative Feed Method: 
The Cubex Matching Transformer - Provides Single 50 ohm coax feed for 3 band and 5 band Quads.  Unbalanced input to Balanced output, rated at 1.5 KW, suspended at the center of the driven element array (15 meter feed point), the transformer provides a simple economical method of feeding the multi-band quad.  Note, this is a compromise feed device which may reduce bandwidth and side lobe spurious.  (Go to Hardware page for more information)


Electrical Specifications (2 Element HF Quads)

Typical Gain: 10dbi on 10 and 15 meters - 9 dbi on 20 meters. @ 50ft.
SWR: Below 2:1 on all bands.
Front to back ratio: Up to 25 db.
Feeding: Can be fed individually with either coax (unbalanced), or with a Cubex  Matching transformer (balanced).
Elements: No.14, 7-Strand Hard Drawn Copper wire. All elements precisely measured, cut and marked for easy assembly.
Power: CUBEX ANTENNAS will handle full legal limit.


Mechanical Specifications

Spiders: Heavy duty heat-treated cast aluminum alloy. Positive clamping to boom.
Boom: Standard 2 element quad uses an 8 ft. by 2 in. O.D. 6061-T6 seamless aluminum boom. 3 and 4 element quads use HD 3" O.D. X 0.083"  6061-T6 aluminum boom.  
Boom to Mast:
High strength cast aluminum mast to boom coupler used for 2" booms; 1/4" Aluminum plate mast to boom coupler used on 3" booms.
Spreader Arms: Select fiberglass for maximum strength and light weight.
Turning Radius Only 9'- 6" (2 El.)
Weight: Only 65 - 68 pounds. two element models.  (Weight varies with model, type of wires etc.)
Installation Height: 40 feet recommended, higher is better, but quads work amazingly well at low elevations.
Rotator: Depending upon the model. HamIV, TailTwister, Yaesu G-1000DXA


VHF MODELS

2 METERS

YELLOW JACKET

  • 4 Elements
  • Center Freq. 145.5 MHz
  • Weight = 2.5 lbs
  • Turn Radius = 26"
  • Gain dbi = 9+
  • FBR = >25db
  • Beam Width (hpp) = 60d
  • Wind Load (sq. ft.) = 0.4
  • Boom Length = 48"
  • Boom Dia = 1"
  • Fiberglass Spreader arms

SCORPION II

  • 8 Elements (14+ dbi Gain)
  • Center Freq. 145.5 MHz
  • Front to back >25db
  • All fiberglass construction Wt. 7.5 lbs.
  • Direct feed with 50 ohm cable
  • Low SWR across band
  • All weather construction for permanent use
  • Handles 300+ watts of power
  • Easy replacement of elements, if necessary
  • Choose Horizontal or Vertical polarization
  • Elements 21" each side-Boom 94" long

6 METERS

BUMBLE BEE II

  • Number Elements = 2
  • Bands -6M
  • Weight LBS = 9.0
  • Turn Radius = 3.5'
  • Gain dbi = 9+
  • FBR = 20-25db
  • Beam Width (hpp) = 60deg
  • Wind Load ( sq. ft.) = 1.0
  • Boom Length = 27"
  • Boom Dia = 1-1/4"
  • Spreader Arm Type = FG

QUEEN BEE II

  • Number Elements = 4
  • Bands- 6M
  • Weight LBS = 14
  • Turn Radius = 6.5'
  • Gain dbi = 11+
  • FBR = 20-25db
  • Beam Width (hpp) = 60deg
  • Wind Load (sq. ft.) = 1.8
  • Boom Length = 96"
  • Boom Dia = 1-1/2"
  • 1.0 mHz -bandwidth (adjustable)

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Cubex Quads
P. O. Box 352
 Alto, MI 49302

 

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