[Ron Ramirez]

Good point, Terry. This is especially important since the service information over the decades regarding the "mid" version 90 has a glaring error - in much of the literature, the "mid" 90 is listed with an IF of 260 kc. This is incorrect. The "mid" 90, like the early 90, has an IF of 175 kc. Only the "late" 90 (with two 47 output tubes) has a 260 kc IF.

I just finished a "mid" 90 (I've been writing about it on my blog) and it received proper alignment at 175 kc. It is, by far, the best and most sensitive 90 I have ever owned. (Oh, darn, I just gave away the ending!)