5 Element Delta Loop Competition Class (Heavy Duty or Super Heavy Duty) – 10m



5 Element Delta Loop Competition Class (Heavy Duty or Super Heavy Duty) - 10m

A 5 Element Heavy Duty/Super HD Delta Loop Antenna for the 10m (28MHz) band

£1,000.00 — £1,250.00

Product Code – 10M5WWHEAVY

After a period of work and optimisation, Vortex very proudly announce an antenna to be a force to reckon with. The antenna is based on a five element Delta Loop but has an enhanced level of forward gain and a side/rear pattern that has minimal side or rear lobes.

The front to back ratio is approaching 40db and you can see from the EZNEC computer model that very little RF energy is transmitted in a side or rearwards direction. This means that most available RF is forward facing – just where the DX is!!. Forward gain is approaching 11.6dbi. Normally for this gain, you’d expect a Yagi to have a boom length of around 11m; equating to 6 or 7 elements. As a bonus, the natural impedance of the array is around the 50 ohms point although we include a gamma match which gives the user full adjustment capabilities.

Also worth noting is the extreme low angle of radiation. Based on a height of 15 meters above ground, the antenna exhibits an exceptionally low angle of radiation. In this case 9 degrees above the horizon. This makes for a very potent long haul DX antenna. An equivalent Yagi (as modelled) would have a higher radiation angle approaching 12 degrees using a similar 5 element antenna at the same height.

Manufactured from lightweight but extremely strong construction grade 6082-T6 Aluminium stock with a heavy duty boom. This antenna includes 6.35mm wide section plate element brackets to compliment 3 sections (or 4 in the Super HD version) of aluminium tubes used in the vertical sections of the elements. Heavy Duty Polyamide Element Clamps, complete with M10 Stainless Hardware is supplied as standard. Large antennas such as this model also come complete with an additional ‘T-Bar’ horizontal strut/support. This support is used to reduce boom sag and anchors the boom in four (4) locations, 2 at the front and 2 at the rear. By using four support points (rather than two) – also reduces the sideways movement of the boom. For our guying line we use ‘Mastrant’ 4mm synthetic guy line which is rated at 400kgs. To compliment the setup, S3i 316 Marine Grade Stainless Steel Eyebolts, Turnbuckles and Hardware finish the project. The antenna is supplied with all hardware except boom to mast mount (see below).

The top wires on each loop are manufactured from copper-clad steel (in essence copper coated stainless steel) which is extremely strong and robust. The breaking strain of this alone is over 250kgs. This wire is the secured using marine-grade (316 stainless) hardware and Vortex’s unique “Cable Strain Relief Mechanism” which pretty well eliminates a top-wire failure. Download our TOP-WIRE info sheet. The antenna is supplied with all hardware except boom to mast mount (see below).

Vortex present a Super Heavy Duty version which includes a 3″ (76.2mm) x 1/4 ” (6.35mm) wall center boom section and 2 outer sections of 2.5″ (63.5mm) x 3/16ths (4.76mm) wall. Price also includes our Plate ‘D’ mounting plate and full stainless hardware to fit either a 2 inch or 2.5 inch stub mast. The Super Heavy Duty version also reduces boom sag to a minimum.

All VORTEX Antennas can be shipped WITHOUT any boom to mast mounting plates. Select this option from the drop-down menu when purchasing. Other options include the choice of mounting plates and complete mounting solutions with U-Bolts and Brackets.

See info below for mechanical and electrical details

  5 Element Delta Loop (Heavy Duty) – 10m

Band(s):  10m (28Mhz)
Element Material:  6082-T6/*AA6082-T6
Boom Material:  6082-T6 box section aluminium
Boom Length:  9.50m
Gain:   11.55dbi
Front to Back Ratio:   Better than 20db typical (36.33db at 28.450MHz)
Feed:   Coax via SO239 socket
Matching:   Vortex Gamma Match (PTFE dialectric)
Rating:   3.5kw
Element Clamps:   Stauff (Germany) – heavy duty polyamide series
Loop Top Wire:   2mm copper clad steel
Antenna Weight:   43kg or 60kg depending on model
Hardware:   304/316 stainless steel

*If available