[BC] KS-20159

[dhultsman5@aol.com]

I have used the 111-C and two different  U.T.C.  LS  Series transformer to eliminate ground loops in the Composite FM signal.  In looking at the L+R and L-R @ 50 and 15,000 Hz.  I was impressed at how well the stereo baseband looked on the scope.  These transformers were better than the Harris composite transformer on the TE-3 Exciter.  
Dave Hultsman
Birmingham, AL
Tel Toll Free (888) 822-1078
Fax (205) 822-6441
 
 
-----Original Message-----
From: rorban at earthlink.net
To: broadcast at radiolists.net
Sent: Fri, 6 Apr 2007 4:51 PM
Subject: Re: [BC] KS-20159


At 08:00 AM 4/6/2007, you wrote: 
 
>To: "Broadcasters' Mailing List" <broadcast at radiolists.net>, 
>broadcast at radiolists.netCc: RLO2L at aol.com 
>Subject: Re: [BC] Xmitters at aol.com 
> 
> 
>The telco 111-C "repeat coils" are available on the surplus market. They are 
>probably the finest audio-frequency transformers --ever. They have four 
>shielded coils and the core is a toriod made of mu-metal strip. Very 
>impressive for something designed in the 1920s. 
 
There are Jensen transformers that can outperform a 111-C, like the one we use in our composite isolation transformer. But the 111-C was indeed an excellent transformer and could pass composite, although not with the same high frequency stereo separation as the Jensen. 
 
_______________________________________________ 
 
The BROADCAST [BC] list is sponsored by SystemsStore On-Line Sales 
Cable-Connectors-Blocks-Racks-Wire Management-Test Gear-Tools and More! www.SystemsStore.com Tel: 407-656-3719 Sales at SystemsStore.com 
 
________________________________________________________________________
AOL now offers free email to everyone.  Find out more about what's free from AOL at AOL.com.