Yes, the bandpass filter was the solution. I just wasn¡¯t sure what the problem was yesterday.
Usually the offending signal is on a lower frequency, this was the other way around and not harmonically related.
This was an all qrp activity but the antennas were all rather close.
I am sure my bandpass filter will take care of this issue.
I still don¡¯t know what difference DIF makes to the receiver other than moving the IF.
Although it does state in the manual that with it OFF performance is slightly degraded but no explaination is given.
Larry
n0sa
Larry Naumann