It can, that is for sure.  There are techniques for working around it, with 
varying success.

Since I only use my inverted vee on 80 and 40, I don't use open wire now. 
But, you can help the rf by adjusting the feedline length, using 
counterpoises on your ground side, having good grounding, and probably 
putting a ballun outside and just running a short length of RG-258 or 
something to feed the station.

----- Original Message ----- 
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 28, 2012 7:43 PM
Subject: Re: Cobra antennas


>    Steve:
>
> I'm tempted to do just that.  My only concern is stray RF getting into the
> shack with such an arrangement.
>
> I've heard that this can be a problem with that type of antenna.
>
> Tom Behler: KB8TYJ
>
> ----- Original Message ----- 
> From: "Steve" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, November 28, 2012 2:38 PM
> Subject: Re: Cobra antennas
>
>
>> Tom,
>>
>> If you have 100 feet of room, why not just string up an inverted vee and
>> feed it with open-wire to a 6-1 ballun and tune it.
>>
>>