[Elecraft] K3 Multi-Band antenna thoughts

[David Cutter]

Bill

It is quite likely that the heating effect is different on each band and 
some bands will prefer a longer feeder than others.  The swr that the 
matching unit provides is easy to measure but only tells us what the 
transmitter sees.  W8JI has a lot to say on the subject.

73

David
G3UNA

>
>
> I am sure you are correct in your idea that just as much heat is produced 
> in
> the DXE balun as in the Elecraft balun but the heat is easily absorbed by
> the huge DXE balun.
>
> I do not have an analyzer to measure impedance at the base of the twin 
> lead.
> All I can say is that the KAT 100 is able to provide very reasonable 
> matches
> 160 thru 10. I have not used my Elecraft Balun lately but if memory serves
> correctly it did not provide as good matches at either 1:1 or 4:1 as the 
> DXE
> does. Early on I tried shortening the feeder but ended up with the full 
> 100'
> for best matching.
>
> If you would like I will run a series of matches on different bands and 
> post
> the SWR readings from the KAT100.
>
>
> -----
> Bill Strong
> WA5KPE
> Hattiesburg, MS
> K2/100  #4454
> KAT100