[ICOM] Location of low pass filter

Larry Benko xxw0qe at comcast.net
Tue May 8 19:15:52 EDT 2012


NO!  The lowpass filter is designed to be at a 50 ohm impedance which is 
probably not what you would see on the output side of the tuner.  Also 
the voltages/currents on the line on the output side of the tuner could 
damage the lowpass filter.

73,
Larry, W0QE

On 5/8/2012 5:09 PM, John G. wrote:
> I am looking at doing a little upgrading in some parts of the station, and have a question about using a low pass filter.  THe current one I have is between the rig and antenna tuner, which seems to be the common place to put one.  Can a low pass filter go on the other side of the tuner-between the antenna tuner and the antenna, or might that mess things up since the tuner might now see the low pass filter as the load?
>
> 73 John AF5CC
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