[AMRadio] AM-864/U output finale

CL in NC mjcal77 at yahoo.com
Fri Aug 12 22:35:35 EDT 2016

Well, after reading the alignment procedure again, it says with -35db in, you should get no less than 0db out across 600 ohms.  The manual does not give an upper limit, so, +10db is definitely more than 0.  Guess this may fall in the 'weasel word' category.  The 12K resistor mix up may be a typo.  On the plate side, the schematic calls for 47K, then passing through the coupling caps to the grid side of the push-pull output stage, there actually are 2 - 47K resistors as shown in the schematic.  This is about the only military manual I have seen that does not include a descriptive parts list, so have nothing to double check with.

Charlie, W4MEC in NC

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