Thanks guys. I got the tap information from W5JO (thanks Jim!).
On 11/21/06, Mike Dorworth, K4XM <[EMAIL PROTECTED]> wrote:
Sorry just went page to page entire book.1957 catalog . The most resisitance on the secondary would be the 500/600 and half of that would be the 125 ohm ----- Original Message ----- From: "A.R.S. - W5AMI" <[EMAIL PROTECTED]> To: "Mike Dorworth, K4XM" <[EMAIL PROTECTED]>; "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Tuesday, November 21, 2006 12:53 PM Subject: Re: [AMRadio] UTC LS-51 > Mike, > > Any pin connection info on this? > > Tnx > Brian > > On 11/21/06, Mike Dorworth, K4XM <[EMAIL PROTECTED]> wrote: > > LS-51 push pull low level plates to multiple line > > > > primary impedance 30000 plate to plate. secondary 50, > > 125,150,200,250,333,500/600 ohms plus/minus 1 db from 10 to 40000 hz. > > Max level +24, relative hum -74 db unbal dc in primary ONE ma. > > > > > > ----- Original Message ----- > > From: "A.R.S. - W5AMI" <[EMAIL PROTECTED]> > > To: "Discussion of AM Radio in the Amateur Service" > > <[email protected]> > > Sent: Tuesday, November 21, 2006 12:37 PM > > Subject: [AMRadio] UTC LS-51 > > > > > > > I need a little help with this transformer. It is a UTC LS-51 in my > > > 1937 speech amp. The output tubes are a pair of 56's in push pull > > > connected to pins 7 and 10, and the output is line level at I'm > > > assuming around 500 ohms balanced using pins 1 and 6. > > > > > > Does anyone have a diagram of this transformer with specs on the pins? > > > I think I may have a some shorted turn on one side of the primary, as > > > my audio p-p voltage shows one side about half of the other, but I > > > just want to make sure the thing is connected right first. I tried > > > swapping the 56's, but the same side showed a reduced audio voltage. > > > > > > tnx > > > Brian / w5ami > > > > > > -- > > > "There is nothing more uncommon than common sense." -- Frank Lloyd > > Wright > > > ______________________________________________________________ > > > AMRadio mailing list > > > List Home: http://mailman.qth.net/mailman/listinfo/amradio > > > Partner Website: http://www.amfone.net > > > Help: http://mailman.qth.net/mmfaq.html > > > Post: mailto:[email protected] > > > > > > > ______________________________________________________________ > > AMRadio mailing list > > List Home: http://mailman.qth.net/mailman/listinfo/amradio > > Partner Website: http://www.amfone.net > > Help: http://mailman.qth.net/mmfaq.html > > Post: mailto:[email protected] > > > > > -- > "There is nothing more uncommon than common sense." -- Frank Lloyd Wright > ______________________________________________________________ > AMRadio mailing list > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Partner Website: http://www.amfone.net > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
-- "There is nothing more uncommon than common sense." -- Frank Lloyd Wright ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
