[Yaesu] FT900 filter help

[Kelly Jones]

Hi Guys (and gals),

I recently put an InRad 703 400hz filter in my FT-900 and so far I'm very 
disappointed with the way it performs.  With the CW Narrow engaged, I now 
get all kinds of "images" when tuning the band.  If I punch the CW button 
to take it out of "narrow" most of the images go away, however, there are 
still a few that seem to occur with very strong signals.

As for actually tightening up the receive, I can't say it did anything at 
all.  I can still hear signals well outside of the 500hz range.  In fact, I 
can still hear signals nearly 2khz away in "narrow".  Is this normal for 
this radio/filter combination?

While I shouldn't compare the performance to my Mark V, I would certainly 
expect more than what I'm seeing.  Something doesn't appear to be right, 
but I can't tell what it is.  As a side note, the 703 used to be a 703C.  I 
removed the circuit board in order to mount the filter in the FT-900.  From 
what I have been told (including InRad), the only difference is that the C 
model has the circuit board attached for the MP line.

Any suggestions or ideas would be appreciated.  I'm getting ready for a 
couple of contest expeditions and was hoping this radio would play.

73
Kelly - N0VD