[Amps] YC156 BVT measurements

[Jim Barber]

It will be interesting to see if a cleaning will change the plate-grid 
leakage reading on the used tube. If I get time today or over the 
weekend I'll give a try and report back if anything changes.

Thanks,
--jim

On 4/6/2012 7:13 AM, Jim Thomson wrote:
> 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
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps