[Elecraft] Re: [KAT2] SWR exactness

[Ingo Meyer DK3RED]

Hello John,

I don't have a SWR bridge which can measure the difference between 1.0 and 
1.1. But I want to measure the SWR of a homebrewed 1:4 balun (built inside 
the K2). My display says 1.0:1. If this value near 1.1 (i.e. 1.09) so I 
want to adjust the correct wire position on the core a little bit. If the 
value near 1.0 (i.e. 1.04 or less) so I'm happy. ;o)

Yes, in principle you are right and one can neglect this difference. Thus I 
WILL use the balun and WILL NOT think now no more about the possible small 
error.

>You are assuming that the SWR bridge can actually measure the difference
>between a SWR 1.04:1 and 1.09:1.  Most of them, including the design used in
>the Elecraft bridges, do not have this type of accuracy.  The other question
>is why does one care if the SWR is 1.0:1 or 1.1:1.  At HF frequencies, that
>degree of difference isn't going to effect your communications ability.
>-John
>  KI6WX


72/73 de Ingo, DK3RED   Don't forget: the fun is the power!

    dk3red@t-online.de   http://www.t-online.de/~dk3red
        DL-QRP-AG #824   http://www.dl-qrp-ag.de