[Amps] Thinking out loud 3-500Z and the like gettering with

[Jim Thomson]

Date: Fri, 10 Jun 2016 19:53:04 +0000
From: "Randall, Randy" <Randy.Randall at UCHealth.com>
To: "amps at contesting.com" <amps at contesting.com>
Subject: [Amps] Thinking out loud 3-500Z and the like gettering with
RF?

Thinking out loud 3-500Z and the like gettering with RF?

I have seen on Ebay and Alibaba small to medium RF induction heating boards for sale for not a whole lot of $$.  Has anyone tried to use one of these in a setup with a coil of suitable size to cherry the plates of a 3-500Z or 572B?
In theory it should work OK and it would be a lot safer than running 500 V or there about and positive grid voltage to cherry the plates.  The tube manufacturers used this setup in production to flash the getters on smaller tubes.   Your thoughts??

Thanks,
Randy AB9GO

##  whats wrong with using low B+  voltage...and positive grid V ?   Then you can gets the plate red...with low B+.   You would not have to go as low as  500 V on a  3-500Z either.  1-2 kv would work just fine. 
Just make sure you have lots of air on the tubes.   BTW, just how long do the tubes have to run red...in order to getter them ?

Jim   VE7RF