Re: [IRCA] [NRC-AM] 16:1 Matching Transformer for "Superloop"

[Russ Edmunds <wb2bjh@xxxxxxxxx>]

If your lighning problem results in burning up the transformers, then it may not be simply that the ones you tried have issues. You may have to disconnect and/or short to ground the antenna whenever storms are forecast. I realize that's a response you'll necessarily like, but an antenna grabs signals and noise and directs them toward the other end, and if that's where the transformer is, then it's in the line of fire.

Russ Edmunds
15 mi NNW of Philadelphia  
Grid FN20id
<wb2bjh@xxxxxxxxx>
FM: Yamaha T-80 & Onkyo T-450RDS w/ APS9B @15'; Grundig G8
AM:  Modified Sony ICF 2010's barefoot

--- On Mon, 1/16/12, Mark Durenberger <Mark4@xxxxxxxxxxxxxxx> wrote:

From: Mark Durenberger <Mark4@xxxxxxxxxxxxxxx>
Subject: Re: [NRC-AM] [IRCA] 16:1 Matching Transformer for "Superloop"
To: les@xxxxxxxxxxxxxxxx
Cc: "DX @NRC" <am@xxxxxxxxxxx>, "Mailing list for the International Radio Club of America" <irca@xxxxxxxxxxxxxxxx>
Date: Monday, January 16, 2012, 6:02 PM



 

Naw they're pretty tiny.

Regards,
 
Mark Durenberger




From: Les Rayburn 
Sent: Monday, January 16, 2012 4:20 PM
To: Mark Durenberger 
Cc: Mailing list for the International Radio 
Club of America ; DX 
@NRC 
Subject: Re: [IRCA] 16:1 Matching Transformer for 
"Superloop"

Mark,

I used the Mini-Circuit RF Transformers in the past 
on a Flag antenna. Good performance, but I suffered several failures due to 
nearby lightning strikes. 
Anything I can do to "beef them up"? 


73,



In a Foreign Lottery,
You Always Lose.
deliveringtrust.com 
Les Rayburn, Director
High Noon Film
130 1st Avenue West
Alabaster, 
AL 35007-8536
(205) 621-7500
(205) 621-7505 FAX
(205) 253-4867 
CELL
http://www.highnoonfilm.com
On 
1/16/2012 4:01 PM, Mark Durenberger wrote: 
Yeah...I see the system burped because it couldn't swallow that 
  whole URL. 

So go to Minicircuits.com and ask 'Model Search" to show 
  you T16-6. 

Regards, 

Mark Durenberger 
  

-------------------------------------------------- 
From: "Mark 
  Durenberger" <Mark4@xxxxxxxxxxxxxxx> 
  
Sent: Monday, January 16, 2012 3:55 PM 
To: <les@xxxxxxxxxxxxxxxx>; "Mailing 
  list for the International Radio Club of America" <irca@xxxxxxxxxxxxxxxx>; "DX 
  @NRC" <am@xxxxxxxxxxx> 
Subject: Re: 
  [IRCA] 16:1 Matching Transformer for "Superloop" 


  Les: Try  www.Minicircuits.com 

http://www.minicircuits.com/MCLStore/ModelInfoDisplay?13267504978520.5445037711796857 
    

This puts you right on the page for a 16:1 transformer.  
    They're pretty inexpensive. 

Regards, 

Mark Durenberger 
    

-------------------------------------------------- 
From: "Les 
    Rayburn" <les@xxxxxxxxxxxxxxxx> 
    
Sent: Monday, January 16, 2012 3:48 PM 
To: <am@xxxxxxxxxxx>; <irca@xxxxxxxxxxxxxxxx>; <amfmtvdx@xxxxxxxxxxxxxxx>; 
    <abdx@xxxxxxxxxxxxxxx> 
    
Subject: [IRCA] 16:1 Matching Transformer for "Superloop" 


    I've finally decided to try my hand at building 
      a  "Superloop" antenna as described in the October 2009 issue of 
      "Popular Communications" in an article by Bruce Conti. 

In that 
      article he mentions a 16:1 matching transformer made from a binocular 
      ferrite core and 30 AWG wire. I've never had much luck at winding my own 
      coils. For my previous "Flag" antenna, I used 16:1 transformers from 
      Mini-Circuits which performed well, but suffered many failures due our 
      frequent and intense lightning storms here. 

Bruce's article 
      mentions that many amateurs are available to make these coils and easily 
      found on the Internet--but I'm having no luck. 

Does anyone out 
      there know someone who makes great 16:1 transformers for Superloops and 
      would be willing to wind two of them for me? Happy to pay for the service, 
      and can send funds via PayPal or USPS money order. 
Thanks! 

73, 
      

Les Rayburn, N1LF 
121 Mayfair Park 
Maylene, AL 35114 
      





c-- 
*In a Foreign Lottery, 
You Always 
      Lose.* 
deliveringtrust.com <http://www.deliveringtrust.com> 
      

Les Rayburn, Director 
High Noon Film 
130 1st Avenue West 
      
Alabaster, AL 35007-8536 
(205) 621-7500 
(205) 621-7505 FAX 
      
(205) 253-4867 CELL 
http://www.highnoonfilm.com 
      

_______________________________________________ 
IRCA mailing 
      list 
IRCA@xxxxxxxxxxxxxxxx 
http://montreal.kotalampi.com/mailman/listinfo/irca 
      

Opinions expressed in messages on this mailing list are those of 
      the original contributors and do not necessarily reflect the opinion of 
      the IRCA, its editors, publishing staff, or officers 

For more 
      information: http://www.ircaonline.org 

To 
      Post a message: irca@xxxxxxxxxxxxxxxx 
    




-----Inline Attachment Follows-----

_______________________________________________
The NRC AM mailing list
Now accepting pre-orders for the 32nd AM Radio Log 
Questions? owner@xxxxxxxxxxx
Latest DX Tests are found at
http://www.nrcdxas.org
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://montreal.kotalampi.com/mailman/listinfo/irca

Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx