[Elecraft] KAT100 Question on SWR/Operation

[Don Wilhelm]

Lee,

The KAT100 (note no dashes in Elecraft model numbers - except for the 
N-Gen :-) ) does not automatically go to a bypass mode.  If you tune it 
into a 50 ohm resistive load, you may find it tunes to some small 
inductance and capacity in-circuit and may actually increase the SWR a 
small bit because it tunes until the SWR is small and that is not 
necessarily SWR = 1 (it may be 1.1 or 1.2 which is close enough at HF).

If you wish the tuner to be in bypass for all bands *and* both antenna 
jacks, enter the menu and set it to CAL P or one of the other bypass 
states.  But if you need it bypassed for only one band or only one of 
the output jacks and *not* the others, just TUNE into a dummy load for 
all the bands and/or antenna jack that will connect to the 50 ohm 
resonant antenna.

73,
Don W3FPR

Lee Buller wrote:
> I have searched the email archives....but have not found an answer to this question about the KAT-100 Tuner.
>
> When the SWR to the antenna is 1:1 without the tuner....(and the KAT100 is in line) does the KAT100 figure that there is no issue and goes to a mode or point where there is no C and no L in the L/C network?  In effect, passing the RF through the unit?  According to the MENU...L = 00.6 and C = 0.30  Looks like there is some L and C still in the circuit.  
>
> OR - when the SWR is 1:1...should the operator take out the tuner?
>
>