[WRL] 816 sub

Jim Wilhite w5jo at brightok.net
Sun Jan 13 19:12:04 EST 2013


What a mess you had under there.  That is a good example of how hams of the 
past repaired things.  I, for one, can't help but wonder what caused the arc 
in the beginning.  It doesn't matter now because you are really fixing the 
problem, not just repairing the symptom.

I am the second owner of a 500B that has minimal repairs over the years but 
I have instituted a few upgrades to prevent what happened to the one you 
have.  I made sure to remove the filament windings from the sockets and 
attach the output to the tubes which helped the modulation since I used plug 
in devices.  I did he same to the Power Supply for the final and those two 
changes made a difference in the clarity of the audio.

Jim
W5JO


----- Original Message ----- 


> Hi Jim, I agree, but  thanks for the reference.  I don't like mercury 
> vapor rectifiers much anyhow,  but when I pulled the mod deck out I 
> discovered that the HV had arced across one of the 816 sockets, which 
> finalized the decision to go solid state.   > 73, Bob W9RAN



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