[AMRadio] Ceramic feedline spacers

Bill Harris w7kxb at msn.com
Sun Dec 18 15:13:36 EST 2011


MaxNormally, the transmission line is on the outside with the wrap-around attachment wire threaded thru the inner hole.  This way it's much easier to install, or replace the spreadershould it become broken.  There would be a slight difference in the impedance and the power handling capability but it shouldn't be an issue for 1.5 KW (peak)Used it to feed 1KW AM to my 20 meter beam back in the 40's.  "Worked fine, lasted a long time."
Later
Bill-w7kxb

> > ----- Original Message -----
> > From: "AirRadio" <AirRadio at dsl.pipex.com>
> > To: "Discussion of AM Radio in the Amateur Service" 
> > <amradio at mailman.qth.net>
> > Sent: Sunday, December 18, 2011 12:00:53 PM
> > Subject: [AMRadio] Ceramic feedline spacers
 Does the feedline wire go 
> > in the hole or on the outside and how to fix the wire to the spacer, I 
> > would assume the feedline wire goes in the hole and a wire twist holds it 
> > there, however, some say the feedline goes on the outside with the wire 
> > twist from the inside.
> > 73 Max
> > ______________________________________________________________

 		 	   		  


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