HB9CV 2 Element Yagi (Heavy Duty) – 11m

HB9CV 2 Element Yagi (Heavy Duty) - 11m

A 2 Element HB9CV Heavy Duty Yagi Antenna for the 11m (27MHz) band

£290.00 — £320.00

Product Code – 11M2TORHB9CVHEAVY

A 2 element Yagi Antenna for the 11m band based around the design of Swiss radio amateur Rudolf Baumgartner HB9CV.

Here at Vortex we have applied our high end construction methods to make an exceptionally robust antenna. In the HB9CV design, a phasing line is used which means the rear element is fed 180° out of phase using a phasing line. The Vortex design uses  a length of 12mm aluminium tube which runs along the top of the boom and is supported above the boom by polyamide Stauff clamps. We have also tried other methods of phasing such as RG213 coax but we have now settled for the solid ‘Tube’ version which also means no coax to deteriorate. The distance between the driven and reflector element is an eighth wavelength which adds another 45°, in all making 225° which makes for an antenna with good gain and excellent front to back figures. 

With the HB9CV antenna the front to back is mainly controlled by the phasing line so small changes in length to the rear element have little effect on the front to back ratio of the array. We have also included a gamma match system which gives the owner much more control of the impedance and setting up of the array.The antenna forms part of our Tornado ‘Heavy Duty’ range which is manufactured from lightweight but extremely strong construction grade 6082-T6 Aluminium stock with a heavy duty boom. The antenna includes Heavy Duty Element Brackets, Heavy Duty Polyamide Element Clamps and comes complete with M10 Stainless Steel Hardware.
Antenna is supplied with all hardware except boom to mast mount (see below).

See our video in which we test the front to back ratio of this antenna.
Join Steve G0UIH in the initial testing and setup of the antenna.
Steve is ably assisted by XYL Gail who makes an excellent antenna rotator unit!

VORTEX BOOM TO MAST PLATES
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

  2 Element HB9CV Yagi Antenna (Heavy Duty) – 11m

Band(s):  11m (27Mhz)
Element Material:  6082-T6/*AA6082-T6
Boom Material:  6082-T6 box section aluminium
Boom Length:  1.55m
Gain:   6.40dbi
Bandwidth 2:1 SWR:   Approx. 1.2MHz
Front to Back Ratio:   Approx 30db at band center
Feed:   Coax via SO239 socket
Matching:   Vortex Gamma Match (PTFE dialectric)
Rating:   3.5kw
Element Clamps:   Stauff (Germany) – heavy duty polyamide series
Antenna Weight:   5.5kg
Longest Element Length:   5.55m
Hardware:   304/316 stainless steel

*If available