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Erm , No.
Radio > Amplifier > LPF
Look for "Drake" , "Nye-Viking" , "B & W" (Barker and Williamson)
In my case it's Radio > BPF > Amplifier > LPF .

Note: most modern multiband radios have a fairly robust BPF . Very few can benefit from an additional/external BPF. One instance I can think of is trapping MW broadcast and harmonics.
Another is multi/multi contest stations where 80m can be divided up as many as 4 ways and the filters provide significant attenuation for the other portions of the band.

I'm not using a resonant antenna in the classic sense. It "hears" everything. Additional pre-select/band pass was purely self defense. I'm deep in the urban RFI cesspool . The LPF is just me attempting to stay out of my neighbors toaster and other services. Reasoning was I eliminated the complexity of switching the BPF in and out and maintained the intended preselect pass band for the receiver while delivering a bit less "noise" to the Amplifier.
In any case the LPF should be the last thing in line . This includes your watt meter. I have seen the diode pick up in a watt meter produce significant noise that the LPF will, to some degree remove.

<blockquote data-quote="kopcicle" data-source="post: 653182" data-attributes="member: 46722">Erm , No.Radio &gt; Amplifier &gt; LPF Look for &quot;Drake&quot; , &quot;Nye-Viking&quot; , &quot;B &amp; W&quot; (Barker and Williamson)In my case it&#039;s Radio &gt; BPF &gt; Amplifier &gt; LPF . Note: most modern multiband radios have a fairly robust BPF . Very few can benefit from an additional/external BPF. One instance I can think of is trapping MW broadcast and harmonics. Another is multi/multi contest stations where 80m can be divided up as many as 4 ways and the filters provide significant attenuation for the other portions of the band.I&#039;m not using a resonant antenna in the classic sense. It &quot;hears&quot; everything. Additional pre-select/band pass was purely self defense. I&#039;m deep in the urban RFI cesspool . The LPF is just me attempting to stay out of my neighbors toaster and other services. Reasoning was I eliminated the complexity of switching the BPF in and out and maintained the intended preselect pass band for the receiver while delivering a bit less &quot;noise&quot; to the Amplifier. In any case the LPF should be the last thing in line . This includes your watt meter. I have seen the diode pick up in a watt meter produce significant noise that the LPF will, to some degree remove.</blockquote>

[QUOTE="kopcicle, post: 653182, member: 46722"] Erm , No. Radio > Amplifier > LPF Look for "Drake" , "Nye-Viking" , "B & W" (Barker and Williamson) In my case it's Radio > BPF > Amplifier > LPF . Note: most modern multiband radios have a fairly robust BPF . Very few can benefit from an additional/external BPF. One instance I can think of is trapping MW broadcast and harmonics. Another is multi/multi contest stations where 80m can be divided up as many as 4 ways and the filters provide significant attenuation for the other portions of the band. I'm not using a resonant antenna in the classic sense. It "hears" everything. Additional pre-select/band pass was purely self defense. I'm deep in the urban RFI cesspool . The LPF is just me attempting to stay out of my neighbors toaster and other services. Reasoning was I eliminated the complexity of switching the BPF in and out and maintained the intended preselect pass band for the receiver while delivering a bit less "noise" to the Amplifier. In any case the LPF should be the last thing in line . This includes your watt meter. I have seen the diode pick up in a watt meter produce significant noise that the LPF will, to some degree remove. [/QUOTE]

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