Thanks gang. I plan to put 6BA6's back into the IF's. The AGC action was never great when I used my first HC-10 with the HQ-110. I have had two HQ-170's since and its the same. The HC-10 and HQ-110 is the equivalent of the HQ-170. More later as I progress. I do need to get the ER copy with the HC-10 highlighted. 73 Dave K4JRB