unless its weather rated, it should be in next to the radio. I use one here and it sits right behind the HF radio (and before the antenna tuner). this way, you aren't having to tune the antenna and low pass filter to resonance, just the antenna.
-eric
On Jan 31, 2014, at 6:11 PM, John Vernaleken wrote:
> Since I have seen it recommended both ways - Should a Low Pass Filter be
> before the external Antenna Tuner or after?
>
> John KC2QJ