[Elecraft] Re: Using the KAT2 as an antenna analyzer

Julian (G4ILO) [email protected]
Thu Dec 4 14:41:01 2003


Thanks, Wayne. Unfortunately, I am already using the "ALT" mode, so 
that's as good as it gets. My signal is getting out, so I suppose as 
long as the K2 or KAT2 aren't hurt by the mismatch, it doesn't matter 
too much.

73,

Julian, G4ILO. RSGB, ARRL, G-QRP. K2 SN: 0392.
G4ILO's Shack: http://www.qsl.net/g4ilo




Wayne Burdick wrote:

>Julian,
>
>The large "C" value tells me that your load is likely to be very high Q on 40
>meters. But determining the actual impedance of the antenna from this data is
>complicated by the distributed stray reactances in the KAT2, and extensive
>modeling would be required to do a good job of it. Of course it doesn't matter
>to the KAT2; it's job is to tune outs its own strays at the same time as it
>tunes out the antenna's reactance.
>
>Speaking of which, you might try the "ALT" mode of the ATU rather than the
>normal "AUTO" mode with this particular load. The KAT2 can almost always find a
>better match than 1.9:1, but with some loads the ALT algorithm is recommended
>since it tries a wider range of L-C values.
>
>73,
>Wayne
>N6KR
>
>
>  
>