That is what I do here. However, I don't use the filter for its original purpose. I actually use it to cut down on noise getting into the 1st anne 2nd IF stages (both are above 60 Mhz and will generate noise in the receiver (I have already verified this as I have a couple of noise sources in the place here that are being noisy even into the mid VHF ranges.

Now, I wonder if anyone makes bandpass filters for both 2m and 70cm that can handle about 300 watts. I have at least one atrocious CB operator in the neighborhood and I hear him on every harmonic I can receive clear into 450 Mhz. Yes, he is running one of those "dave made" dirty class C 2 KW amps.

-eric
 
On Jan 31, 2014, at 6:48 PM, John Miller wrote:

> lowpass filter should be at the back of the radio and I've heard as close as 
> you can get it, I've even known people to run a double PL-259 to put it 
> right at the back of the radio though if your radio is pretty new you 
> shouldn't need one.
> ----- Original Message ----- 
> From: "John Vernaleken" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, January 31, 2014 8:11 PM
> Subject: Low Pass Filter
> 
> 
>> Since I have seen it recommended both ways - Should a Low Pass Filter be
>> before the external Antenna Tuner or after?
>> 
>> John  KC2QJB