[Moon-net] ALL: Burn in a filament

[a.f.veldhuijsen at planet.nl]

Hello all,

as this subject is interesting for many of use who purchased a big 
tube that was on the shelf for a long time...

Leif, SM5BSZ, wrote some intersting stuff on this. It can be found on 
his webpages: http://www.sm5bsz.com/recondit.htm

For Kim...

You did the right job sofar so now it's time to apply HV.

As you don't know anything about the condition of your tube you have 
to be aware of arcing in your tube so it's a very good idea to put a 
50 to 100 kOhm resistor in the HV. Start with about 40% of the HV for 
two hours, 50 % for two hours, 60% for two hours and so on. When the 
tube is very old, leave it on for a full day. Replace the reststor for 
a smaller one (1 kOhm or so) and leave it on again for some hours.

This way you will have a good temperature in your shack for a least a 
day or so hi....

73's Frank, PA4EME 

----- Oorspronkelijk bericht -----
Van: Kim Liljekrans <oz5iq at privat.dk>
Datum: zaterdag, maart 3, 2007 5:09 pm
Onderwerp: [Moon-net] ALL: Burn in a filament

> HI gang
> 
> I need some experience :
> 
> have set  up  a 4CX1000 with only filament ON, and have slowly 
> raised  ( 
> over a few hours) the votage up to
> the normally used ie. 5.8 V  measured at the socket.
> 
> How long time is  nessary  for achieving the " normal max vacuum"  
> again  ??
> 
> 
> I think this has is of  general interest , so PSE answer via the 
> net (direct 
> is OK as well TOO.
> 
> VY 73  de  OZ5IQ, Kim    ( OZ1EME as well)
> 
> 
> 
> 
> 
> 
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