[Elecraft] need some roofing filter advice?

[Ed Muns]

What's "different" about the K3 is its outstanding usability.  With a single
front panel control, HI CUT, any SSB bandwidth can be quickly dialed in,
maintaining optimum intelligibility.  With the few prior generation radios I
tried narrow SSB filtering on, there were obscure menu settings and/or IF
controls that were much more complicated to set for the same result.  Some
users never figured out the appropriate settings and thus concluded it
didn't work.

Ed - W0YK

Bill, W4ZV, wrote:
> The K3 is not actually different or it would be violating the 
> laws of physics.  To make ANY radio work using narrow 
> bandwidths on SSB is simply a matter of optimizing the 
> placement of the filter passband in the voice spectrum (as Ed 
> states above).  The FT-1000MP, K2, Orion and many others can 
> be made to work with narrow filters.  I first discovered this 
> on an MP I used in the late 90s:
> 
> http://www.va3cr.net/va3cr2.net/markv/Troubleshooting/Filters.htm