[Kenwood] Another filter question/problem

[Dave Holford]

John Geiger wrote:

>I just installed a Kenwood YK88C-1 filter in my TS690
>in time for the November SS (thanks to Associated
>Radio for sending it priority mail so I could have it
>by contest time).  However, when I put the filter in
>line I have to turn the IF shift completely to the
>right to put it on the right receive frequency.  It is
>fine with the filter out of line, where the IF shift
>is centerd, as it is supposed to be.  Also, with the
>filter in line I was hearing some loud stations on the
>other side of the zero beat.
>
>This is a used filter, so I have no idea as to its
>history, but anyone have an idea as to what is going
>on?  Is it the filter or the rig that is out of
>alignment here?  
>
>Guess it isn't my week for CW filters.
>
>73s John W5TD
>
>
> 
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>  
>
I had a similar experience with an YK88C (might have been an 88CN) in my 
TS-450.
Although the AM and SSB filters have the same specs; the CW filters of 
the 88C and 88C-1 have slightly different center frequencies. You might 
check to be sure that you don't have a YK88C mounted on a YK-88C-1 
plug-in board. The two filters look identical and have identical 
connections but the centre frequencies differ - unfortunately I cannot 
remember by how much but I know I had to use the IF shift with mine.

Regards
Dave VE3HLU