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Chris,


Sorry, just got home from So Cal...  Been working through the thread.


LOTS bigger amp than ya really need :) LOL


The MORE NEGATIVE voltage is the cut-off voltage.  Meaning, you want the tube CUT OFF in receive.


And yes, you can parallel the zeners.  When I did a lot of Pride DX300 work, I started paralleling the zeners because I had a shitload of them, and the Pride is known to launch the zener for bias.  Once I paralleled them, no mo problems.



--Toll_Free