[CQ-Contest] 3 el 40 KLM

Woods, Eric D PB-edwoods EDWOODS at msg.pacbell.com
Wed May 20 13:06:44 EDT 1998


These things present an input Z of about 20 ohms real and about + J 20
ohms reactive.  Try using a pair of 75 ohm, 1/4 wavelength (electrical)
feedlines between the 50 ohm input of the balun and the 50 ohm coax from
the rig.  This technique has worked on both the dipole and the 2 ele
KLM..  I think N6TR mentioned to me that he also used this technique on
his 3 ele KLM once upon a time.

A noise bridge (not one of those newfangled analyzer thingies)
measurement is a real good thing to make at the balun so you know where
to start....

Eric, K6GV
edwoods at msg.pacbell.com
> ----------
> From: 	W6qk[SMTP:W6qk at aol.com]
> Sent: 	Wednesday, May 20, 1998 7:29 AM
> To: 	cq-contest at contesting.com
> Subject: 	[CQ-Contest] 3 el  40 KLM
> 
> Jacques, F6BEE, is putting up a 3 el 40 meter KLM and is having
> problems
> getting it to resonate on 40. Any ideas ? Spent the weekend with no
> luck- did
> replace the factory balum put no improvement. VSWR did not improve at
> 50 or 90
> feet so the matching is just plain off. Changed the lengths but that
> did not
> help.
> Trying to help him get this baby up and running for CW WPX as TM2Y.
>                                               73, Al
> 
> 
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