Topband: Two 2:1 transformers to choose from!!

Charlie Cunningham charlie-cunningham at nc.rr.com
Thu Aug 22 14:41:40 EDT 2013


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 at 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 at gmail.com
> To: rodenkirch_llc at msn.com; topband at 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 at msn.com>wrote:
> 
> > I received enuff "info" and thoughts to know I'll utilize the 5:7
winding
> > version.
> >
> _________________
> Topband Reflector
 		 	   		  
_________________
Topband Reflector



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