N2RD:
>I will be replacing my Yaesu 1KMP with the K3. My Yaesu rig has some
Inrad and Yaesu optional filters for the 8.215Mhz IF. Will I be
able to use them in the K3?
It's my understanding the filters are identical
electrically, but use a different mechanical configuration.
Therefore, the answer to your question is NO.
73, Bill W4ZV