And I installed .1mf caps before and after the hard-to-find mechanical filters.
If it works it works, but that seems like a whole lot of condenser for a circuit operating at RF... I'd have used something closer to a .001 or whatever I had plenty of in that size range.
BTW: One of my favorite selections from Unca' Sam's depot manuals involves the R-390 alignment instructions: (paraphrased)
1) Complete the performance check in chapter XX to verify the radio is operating properly.
2) Repair any deficiencies found and verify proper operation before alignment.
3) Place the function switch in the operate position and allow the radio to warm up for a minimum of 24 hours prior to beginning the alignment. This alignment procedure may require more than one day. The radio should be left on overnight if a second day is needed to complete the alignment.
Apparently the DoD didn't sweat their electricity bills back in the day or the cost of bench time............