[Amps] YC156 BVT measurements

[Jim Thomson]

Date: Wed, 4 Apr 2012 23:19:16 -0400
From: "Gary Schafer" <garyschafer at comcast.net>
Subject: Re: [Amps] YC156 BVT measurements

Hi Jim,

Be sure that the ceramic is clean on the tubes. Even oily fingers can cause
some leakage at high voltages.

Also be sure to connect unused elements together when testing. 
When checking plate to grid, tie the cathode and filament to the grid.
When checking grid to cathode tie the filament to the cathode and plate to
the grid. Never leave any elements floating during hi-pot testing.

73
Gary K4FMX

##  I concur with the above.  Clean the ceramic with isopropanol type  alcohol  or whatever eimac
says to use.   You can at times measure a BIG difference in the results.  
Not leaving any els  floating is the correct procedure
as gary has stated.   He’s  dead on accurate here. 

Jim  VE7RF