There are many ways you can feed the Hexbeam BUT you must use a 1:1 Balun of one design or another.

There is one common reason for this, this is to stop Common Mode Current Issues that can cause High SWR, RF feedback and even EMI problems to other electrical products, and some my not be your own! Last thing you want is to be calling CQ and your neighbour comes knocking on your door accusing you of causing TVI!

Visit GM3SEK's page for some ideas http://www.ifwtech.co.uk/g3sek/in-prac/index.htm#1005

Below are the two versions of 1:1 Baluns I can supply for the G3TXQ Hexbeam

The FB31-1020 Ferrite Bead Version (Fair Rite number 2631102002)

ONE (1) Metre of RG-213 Militery Spec or similar (will go up a grade not down) with 6 x FB31-1020 beads fitted. The coax is split on one end and weather proofed, six beads slipped over the coax and held in place with cable ties. The other end has a PL-259 and SO-239 fitted which is in turn weather proofed. This is a quick way of producing an effective 1:1 Balun that really does work, Will handle over 1.5KW

This version is £30

The FT240-31 Ferrite Torriod In-Line Isolator Version (Fair Rite number 2631803802)

A  FT240-31 Torriod

RG142 Coax with 8 turns (High-power coax)

chassis mounted PTFE SO259  fitted both ends

Housed in a 10cm x 10cm x 5cm box

Ecapsulated with Epoxy for a 100% water proof finish

Will handle over 1.5KW

Before filling with waterproof resin

After filling with waterproof resin

This version is £50

If using the In-line Isolator you MUST supply your own pigtail, please follow the instructions below to make one.

Cut a small length of coax approx 50cm long and bare 25mm of braid, do not bare more than 25mm, if you bare more than this it can have an effect on the SWR as you are in effect adding more length to your elements, 25mm is maximum I recommend

Separate the centre from the braid

Solder the whole of the braid

Slide some heat shrink over the centre and braid and solder eyelets to the ends, Cover with hot glue or similar water proofing agent.

Attach this to the 1:1 In-line Isolator

Attach this to the to the 20m point on the Hexbeam.

There are many way to perform the above but this is one idea that I have put into practice.