[R-390] Making Progress on the EAC R-390A project

[rbethman]

Jim,

The failure of the crystal calibrator may very well have nothing to do 
with what you did.

Try swapping V-901 with another 12AU7.  The calibrator uses one half of it.

It may simply have gone South.

Bob - N0DGN

On 5/21/2012 1:10 PM, Jim Green wrote:
> I have recapped the IF deck and replaced the 11.5Mc crystal. I have
> reception on all bands now.
>
> I fried my crystal calibrator whilst performing an alignment. It
> happened when I put a 455kc signal into E-2110. Also, The procedure
> instructs one to use AN/URM-25 with CX-2919/U instead of cord W104 and
> connect the AN/URM-25 to test point E210&  rock it into zero beat.
>
> First, I don't have an AN/URM-25. I have a HP8640. I don't know what
> the CX-2919/U is I assume it's a probe of some sort. I used a
> tektronics O-scope probe. I could hear no signal to zero beat.
>
> When I was done, My crystal calibrator no longer worked. What am I
> doing wrong?
>