[Towertalk] Re: [Towertalk] KLM Tribanders

[i4jmy@iol.it]

A dual trace oscilloscope is a good instrument to check the phase (and 
balance) of KLM baluns. 
The balun on the installed antenna should be temporary removed and 
checked. 
In any case the coax to the antennas will have to be the same lenght 
therefore also the already installed antenna and balun have to be 
accessed anyway.

73,
Mauri I4JMY


> I am in the process of building stacks with various KT 34s and KT 34XA
s that 
> I have acquired and have been rebuilding.  I am planning on stacking t
hem 
> using the Stackmatches by WX0B. 
>  
> Most of the 4:1 baluns are either not marked with the typical + and - 
> markings that are usually appear on the KLM baluns.  In addition, the 
one 
> previously installed KT 34XA is at 65 feet and is inaccessable to chec
k any 
> +/- markings.
> 
> Someone told me a while back that in stacking the KLMs it was imperati
ve to 
> keep the + on the same side for the entire stack.  Is this so, and if 
it is 
> what is the reason for doing so?  I know you can check the balun with 
the MFJ 
> 259 to determine which side is which and plan to do so but does it rea
lly 
> make a difference?
> 
> Bill K4XS
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