Array Solutions makes just such an animal - teflon coax wrapped
around a 2" toroid inside a gray plastic electrical box. I know of two
here locally that have provided reliable service at 14 MHz and up.
Unfortunately, I don't know what kind of common mode impedance
they provide (I just stuck them up and used em). Jay, can probably
tell you if you ask. I believe the A.S. specs rate them at 4KW.
Mike, W4EF.....................
----- Original Message -----
From: "Jim" <w7ry@earthlink.net>
To: "Rich Hallman - N7TR" <rich@n7tr.com>; <towertalk@contesting.com>
Sent: Sunday, February 03, 2002 2:16 PM
Subject: Re: [TowerTalk] W2DU Balun's?
>
> Well made an W2DU CANNOT be used in the same sentence!
>
>
> I have had MANY problems with them. The failure was the solder connections
> on the lugs that connect the coax to the studs/eyes. The ends of the coax
> did not have a good mechanical connection. (Remember your Heathkit
> instructions ?) The center conductor was just stuck through the hole in
the
> lug and little bit of solder applied.
>
> No much fun when the balun is mounted on end of the boom on your 2
element
> 40 meter beam....And you cannot reach it unless you take down your
tribander
> and the 40 meter beam.
>
> Better to make your own with a torroid core and some Teflon coax RG-142 or
> RG-400 and an outdoor PVC electrical box.
>
> 73
> Jim W7RY
>
>
>
>
>
> ----- Original Message -----
> From: Rich Hallman - N7TR <rich@n7tr.com>
> To: <towertalk@contesting.com>
> Sent: Sunday, February 03, 2002 13:52
> Subject: [TowerTalk] W2DU Balun's?
>
>
> |
> | Who is commercially selling a well made version of the W2DU Choke Balun
> for
> | Dipoles? Looking for a 160-10 Meter version.
> |
> | Thanks...
> | Rich
> |
> | ******************************
> | Rich Hallman - N7TR
> | Reno, Nevada
> | http://www.n7tr.com
> |
> | N7TR DX-Cluster Access:
> | telnet://dxc.n7tr.com
> |
> |
> |
> |
> | ________________________________________________________________________
> | Where do you get ICE bandpass filters & beverage matching boxes? The
> | same place that pays for the hosting of this list: The eHam Store.
> | Order online at http://store.eham.net.
> | -----------------------------------------------------------------------
> |
> | -----
> | FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> | Submissions: towertalk@contesting.com
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> |
>
>
>
> ________________________________________________________________________
> Where do you get ICE bandpass filters & beverage matching boxes? The
> same place that pays for the hosting of this list: The eHam Store.
> Order online at http://store.eham.net.
> -----------------------------------------------------------------------
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
>
________________________________________________________________________
Where do you get ICE bandpass filters & beverage matching boxes? The
same place that pays for the hosting of this list: The eHam Store.
Order online at http://store.eham.net.
-----------------------------------------------------------------------
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
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Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|