Hi all:

I want to understand SSB and CW filtering a little more and I'm hoping
someone on this list can help.
I will name the model numbers of the Yaesu Ft-102 filters but for
comparison, they are very similar to the older Kenwoods. I think the
Kenwood 1ST IF is 8.3 VS 8.2 as in the case of my Yaesu.
My FT-102 has a number of optional filter slots, 1 for SSB, 1 for a.M and 2
for CW.
The SSB slot contains an 8.2MHZ, 1ST IF called the XF-8.2HSN and can narrow
to 1.8KHZ for SSB and 3.1KHZ wide for CW. my next filter, the XF-8.2HC, is
also a 1ST IF  CW filter only and is a 600HZ/1.3KHZ filter.
I have the AM which is called XF-8.2GA and is  a 4KHZ to 12.5KHZ filter,
not sure if this is still a 1ST IF but think so.
I want to install my 2ND IF 455KHZ CW filter which has a bandwidth of 500HZ
to 1KHZ. What improvements will this make?
Are the 8.2 1ST IF filters main job to reject out of band interfearance? IE
if I'm on 7.150, is it the 8.2's job to prevent bleed over from 8.2MHZ away
from my frequency? In other words, around 15MHZ?
Is it the 2ND IF's job to reject interfearance below the 8.2, in band. So
if I'm on 7.150, then the 455 2ND IF filter will handle interfearance
around that 7.150 frequency.
If you listen to my Demo and I can get Steve to forward it out or the link
to my dropbox public folder worked, the high pitch of the interfearing CW
station, was allot closer than 8.2MHZ and my XF-8.2C CW filter rejected it
with no problems, it may have been a KHZ away at best.
Hope you can help.

73:
Mike VO1AX