That's great, Jim!! Sounds like it's working well!! Have fun! I'm sure you
will like it!
73,
Charlie, K4OTV
From: James Rodenkirch [mailto:rodenkirch_llc@msn.com]
Sent: Sunday, August 25, 2013 9:53 AM
To: Charlie Cunningham
Subject: RE: Topband: Two 2:1 transformers to choose from!!
Got the delta loop up and wired over the past three days, Charlie!!
Tried it out last night and, before the preamp died, I was seeing an S unit
to two difference when switch between east and west direction on 80 meters
and 40. The preamp died as I was getting on 160 BUT...I did use the preamp
in my Argonaut VI, just to see how it worked and, while listening to some
SSB stations I did a switcheroo (have a switch in the DC voltage line to the
relays out at the antenna) and saw a solid 2 S unit difference on at least
two of the stations.
Comparing the noise level of my vertical versus the delta loop shows the
noise level is reduced by at least 3 to 4 S units.
So, something is "working" Hi Hi
Conditions on 160 weren't great this morning AND the entire lash up at my
operating table was very kluged - going to make up a DC power distribution
box and add the switches (switch the relays in or out to switch direction
from east to west or vice versa)o be and a T/R relay circuit (as soon as I
find one and get the pars) so more 'work' and planning to be done.
I have only had it up and running since yesterday afternoon so lots of
"testing" still in order. I don't have any test equipment other than a DVM
and a noise bridge but will be fun to play with it when signals are being
heard.
72, Jim Rodenkirch K9JWV
> From: charlie-cunningham@nc.rr.com
> To: rodenkirch_llc@msn.com; mikewate@gmail.com; topband@contesting.com
> Date: Thu, 22 Aug 2013 15:18:40 -0400
> Subject: Re: Topband: Two 2:1 transformers to choose from!!
>
>
> That's great, Jim! Let me know how it plays!
>
> 73,
> Charlie, K4OTV
>
> -----Original Message-----
> From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of James
> Rodenkirch
> Sent: Thursday, August 22, 2013 3:00 PM
> To: Charlie Cunningham; 'Mike Waters'; 'topband'
> Subject: Re: Topband: Two 2:1 transformers to choose from!!
>
> When time permits, Charlie, I will do just that! Almost done with
> everything up to the two boxes with the switchable components - resistor,
> xfmr - as I await the xfmr(s) arrival. Outta be listening by Sunday
> morning!!
>
> > From: charlie-cunningham@nc.rr.com
> > To: rodenkirch_llc@msn.com; mikewate@gmail.com; topband@contesting.com
> > Subject: RE: Topband: Two 2:1 transformers to choose from!!
> > Date: Thu, 22 Aug 2013 14:41:40 -0400
> >
> > Well, Jim
> >
> > Since you wound both transformers, why not try them both, and see if you
> > can measure any difference? I' guessing you won't see much!
> >
> > 73,
> > Charlie, K4OTV
> >
> > -----Original Message-----
> > From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of James
> > Rodenkirch
> > Sent: Thursday, August 22, 2013 2:00 PM
> > To: Mike Waters; topband
> > Subject: Re: Topband: Two 2:1 transformers to choose from!!
> >
> > Thanks, Mike - will try the 2:3 ratio one first!
> >
> > > Date: Thu, 22 Aug 2013 10:21:14 -0500
> > > From: mikewate@gmail.com
> > > To: rodenkirch_llc@msn.com; topband@contesting.com
> > > Subject: Re: Topband: Two 2:1 transformers to choose from!!
> > >
> > > P. 7-69 of Low Band Dxing (5th ed.) by ON4UN says a maximum of 4 turns
> on
> > > the low-Z primary for binocular cores. It might work, but there are
> other
> > > turns ratios you might try.
> > >
> > > Here is a list of turns ratios for those cores I made:
> > > http://www.w0btu.com/Binocular_core_turns_ratios.pdf
> > > If you get a 500 Server Error message, contact me directly and I'll
> e-mail
> > > it to you.
> > >
> > > 73, Mike
> > > www.w0btu.com
> > >
> > > On Wed, Aug 21, 2013 at 3:49 PM, James Rodenkirch
> > <rodenkirch_llc@msn.com>wrote:
> > >
> > > > I received enuff "info" and thoughts to know I'll utilize the 5:7
> > winding
> > > > version.
> > > >
> > > _________________
> > > Topband Reflector
> >
> > _________________
> > Topband Reflector
> >
>
> _________________
> Topband Reflector
>
> _________________
> Topband Reflector
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Topband Reflector
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