Paul,
You really should use a balun. The choice is a function of what you guess
the impedences are going to be. I would start with 10 or so turnws of coax at
the transition point and see what happens. This is the equivalent of a 1:1
balun. If your tuner can handle it, you're golden. If not, use a 4:1 balun.
It is NOT generally a good idea to hook coax directly to a dipole.
However, a lot of hams do it and they do get out very well; that what's so nice
about HF. You can break a lot of rules and still have fun.
73,
Barry
K3NDM
>From: Paul DeWitte K9OT <k9ot@mhtc.net>
>Date: Tue Jan 31 11:49:29 CST 2006
>To: tentec@contesting.com
>Subject: [TenTec] openwire feed OT
>I would like to reopen the discussion on getting open wire into the shack.
>A while back there was quite a discussion on wheather to use a 4-1 or a 1-1
>balun when going to coax from open wire outside the shack and then running
>coax in to a tuner.
>
>No one mentioned just hooking the coax direct to the open wire without a
>balun.
>
>First I realize that you are going from balanced to unbalanced. How would
>this differ from feeding a dipole direct with coax and not using a balun at
>the feed point?
>
>I would like to put up a temporary loop and it is not feasable to run
>openwire in to the shack. But I would like to feed it with open wire from
>the loop to where it comes into the house (cheaper than buying more coax).
>So I am looking for suggestions.
>
>Since I am all T T it is only partly off topic.
>
>Thanks
>
>73 Paul K9OT
>
>
>
>
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