[TowerTalk] choke / balun design needed

[Roger (K8RI) on TT]

You will find that center fed dipoles are rarely balanced and even if 
they were, coax is unbalance,  So the good old choke in Jim's tutorial 
should be a good idea.  The RFI tutorial shows how many cores, the type 
of material for the cores, and how many turns to wind your own.

73

Roger (K8RI)


On 4/27/2015 9:50 AM, Alex Malyava wrote:
> What would be the bestest design for choke or balun to be used with dipole
> or OCF dipole?
> Like what type of core, number of turns or number of beads?
>
> I need an antenna for 30m band, and my very first intention was to go with
> simple dipole.
> Next idea was to put OCF dipole to use in on more than one band :)
>
> So far, for a regular dipole, I came up with "1:1 Ruthroff voltage balun
> design" described in http://vk6ysf.com/balun_1-1.htm page.
>
> OCF is what I got stuck with...
> I know that OCF dipoles need something more than just a balun...
> What should I use?
> A bunch of beads over the coax? Some balun + beads?
>
> Alex K2BB
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-- 

73

Roger (K8RI)


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