[Elecraft] Thoughts on internal vs external ATU for K3

K6LE k6le at mac.com
Wed Feb 24 23:00:22 EST 2010


Have to disagree Don!

I have a ladder line fed doublet (with outside balun) attached to Ant 1 and an R7 on Ant 2.

I have Ant 1 set to use the ATU and Ant 2 Bypassed since I don't need the tuner for it.

When I switch between Ant 1 and 2 the ATU indicator comes on for 1 and off for 2.

Slick!

Rick
K6LE

On 2/24/2010, at 3:36 , Don Wilhelm wrote:

> Chuck,
> 
> While you cannot have one antenna set to bypass and the other one for 
> tuning - there is an easy way to accomplish that.
> Since the K2 and K3 tuners remember the settings for each antenna jack 
> separately, just pre-tune the one you will not use for tuning into a 50 
> ohm dummy load.  Then when you select that antenna, the tuner is 
> effectively bypassed.
> 
> In practice, not all antennas are well matched on all bands - and that 
> is particularly true of electrically short antennas, so you would likely 
> want tuning on both antennas anyway.
> 
> 73,
> Don W3FPR



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