[Antennas] Question reg. multiband dipole - balun

Wed, 20 Feb 2002 02:28:26 +0600

this should be easy
make a short piece of ladder line out of two pieces of coax
ground the shields toghther and run it through the window connect the 
ladderline on the out side and bingo you are through the window  the 
small impeadence lump you will get wont bother at all          try to 
keep your ladderline at least 1/2 wave on the lowest freq you will use 
that will keep the current point outside
hope that helps

cul de k9wkj

Christian Buenger wrote:

> Hello dipole-user,
>
> I have a question regarding a "normal" multiband (80m-10m) dipole. I 
> am planning to set up the following antenna: A horizontal flat-top 
> dipole abt. 2 x 15m long, fed with 450 Ohm window line. So far there 
> are no problems but I can't route the window line through the window 
> because the window has metal framing. Window line and metal structures 
> is not working ;(
>
> I thought abt. using an external weatherproof 1:4 balun, connecting 
> the balun to the window line (outside the house where no metal 
> structures exist) and then route coax into the shack (abt. 2-3 
> meters). Somebody told me that this is not going to work. 
> Unfortunately I can't put the whole tuner outside. That would make 
> band changes very uncomfortable and additionally the tuner is not 
> weather proof.
>
> Has anybody a solution for this problem? Or experience?
>
> Thanks in advance.
>
> 73
> Christian, DL6KAC
> -- 
> mailto:[email protected]
> fax2mail: +49 25 61 / 9 59 42 99 20
>
> - - -
> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
> _______________________________________________
> Antennas mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/antennas
>