[Elecraft] K2 has one freq with low swr - all others fine - what tocheck

[Don Wilhelm]

Tim,

It is likely that your feedline is presenting a very high impedance at that
frequency.  The Elecraft tuners do not like to tune high impedances very
well - OTOH, they do not usually have a problem with low impedances.

Try adding about 25 feet of feedline - if the KAT100 then is able to tune
it, you will know that the antenna is truly presenting a high impedance at
the shack end.  You can either adjust the antenna or the feedline length
until it tunes on all bands of interest.

73,
Don w3FPR

> -----Original Message-----

>
> Hi all -
> I have a K2 connected to a separate KPA/100 - KAT/100 box. Any frequency
> on my rig will tune with an SWR of 1.5 or less EXCEPT in the 7.200 MHz
> area where it only hits about 3.7 - 1.0.  It seems odd to me that only
> such an isolated freq range would do this....so it makes me wonder if
> there is something within the rig I need to check.....vrs blaming it on
> my wire loop which has served me so well.
>
> Being a guy whose highest technical acheivement is turning on a
> soldering iron - I would like a suggestion for where to start and how to
> proceed checking out my rig for this particular issue. Could someone
> offer a suggestion?  Thanks very much in advance.
>
> 73/ Tim, NZ7C
>