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DCI Bandpass Filters

Hi all.  
I get a considerable amount of intermod near the UO-14 downlink frequency 
when I run my preamp.  Believe it or not, it seems to be mostly from AM 
broadcast stations.  I never really noticed it before, but then the Fugi's 
are 800 kHz higher and AO-27 is almost 2 MHz higher and the problem seems to 
disappear above 435.5 MHz.  Anyone have any experience with the DCI-435-10C 
filter?  At almost 2 kg and 300 mm long, it certainly would be a problem up 
on the mast.  Please reply directly.
Thanks es 73,
Jerry, K5OE
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