Sorry... The balun is using (3) 2.4" cores. I have forgotten the
composition but chose carefully many years ago. I got them from work
at Teledyne. They build some *interesting* stuff there! This was Before my
accident. The wire is Teflon coated, 14 gauge solid.
73 from Wade/KJ4WS
On Sat, Jul 27, 2013 at 6:54 PM, Rick - DJ0IP / NJ0IP <Rick@dj0ip.de> wrote:
> Wade, it sounds like you've got yourself a fine balun (perhaps).
> "Triple Cores"...the statement is meaningless unless you say which cores
> you
> use. I'm confident you used the right one, but finish the sentence and
> state exactly which core you used.
>
> The balun in the 989C is not particularly good. It's OK but marginal.
> The newer MFJ 9982 uses 4x 2.4" cores which IMHO is about right.
> According to Jim (K9YC), you might even need 5 cores in some cases when
> running legal limit power.
>
> In any case, your choice of the 1:1 instead of 4:1 was spot on! Good job.
> The vendors have been misleading people here for far too many years.
>
> 73
> Rick, DJ0IP
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Wade
> Staggs
> Sent: Saturday, July 27, 2013 8:13 PM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] which balun?
>
> Mine is a Homebrew Triple Core in a 1:1 Current Configuration. It makes the
> Balun in the back of my MFJ-989C look small. I use it on the 10 foot piece
> of RG-213 between my Window Line 450 Ohm and the Tuner. I can't get the
> Window/Ladder Line through the window in a practical manner. It is housed
> in
> a Commercial Electrical Enclosure. You may not need so much. I wanted the
> ability to run Full Legal Limit with no worries.
>
> 73 from Wade/KJ4WS
>
> On Sat, Jul 27, 2013 at 9:59 AM, denton sprague
> <denton@oregontrail.net>wrote:
>
> > Thought would start a little poll..
> > Which balun are you using with your 238 series TT tuners and multi
> > band antenna?
> > Currently, I use a balun designs 4214t 4:1 balun to feed my 80 meter
> > horizontal loop.with 450 ohm feeders.
> > _______________________________________________
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> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
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