Tnx Karl. Yes I must have missed the first part. Yes this will work for measuring the loss. 73, N2TK, Tony
-----Original Message----- From: Karl Larsen [mailto:[EMAIL PROTECTED] Sent: Saturday, October 07, 2006 9:54 AM To: N2TK, Tony Cc: 'Dave G4AON'; elecraft@mailman.qth.net Subject: Re: [Elecraft] Baluns & wires & feeders (oh, my!) N2TK, Tony wrote: > I ask this as a question - Putting baluns or UN-UN back to back checks that > both have the same ratio and can check efficiency if they are transformers > such as what is used on beverages. How does this check if it is working well > as a balun? As an example, a straight piece of coax with ferrite beads on it > could be treated as one or two baluns back to back. But just checking power > at the end versus power going in would seem to check the efficiency of the > coax but not tell you how much, if any RF was on the outside of the shield. > Please correct me if I am all wet. > Hi Tony, you missed the question. We assumed the balun's were made properly. The task was to measure the loss through them. 73 Karl > 73, > N2TK, Tony > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Dave G4AON > Sent: Saturday, October 07, 2006 2:54 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Baluns & wires & feeders (oh, my!) > > There is a simple way to measure the efficiency of a balun, make two of > them and connect them "back to back". Measure the power fed to them and > the corresponding output power. Obviously this doesn't take a mismatched > antenna into account. > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
