Amps
[Top] [All Lists]

[Amps] 3-1000Z - Filament Voltage

To: "amps@contesting.com" <amps@contesting.com>
Subject: [Amps] 3-1000Z - Filament Voltage
From: "rob" <VE6TR@telus.net>
Reply-to: rob <VE6TR@telus.net>
Date: Tue, 09 May 2006 20:22:14 -0600
List-post: <mailto:amps@contesting.com>
Greetings,

I have a Harris RF-104 with a 3-1000Z tube.  I have several questions regarding 
the filament voltage.  

The Eimac spec. sheet that I have lists the filament voltage as a nominal value 
of 7.5 volts with no min or max values 
shown (unlike the 3-500Z spec. sheet which has min/max values).  The Harris 
RF-104 that houses and powers the 
tube has a spec. of 7.8 volts.  As I've had to adjust the filament transformer 
taps to achieve 7.8 volts (due to different 
line voltage here), I was wondering if:

1.  There a preferred voltage to run the filament at?

2.  There a loss of tube life running the filament voltage too low or high?

3.   There a practical tolerance for the filament voltage?

Any information would be appreciated.

... 73 

Rob Brennen VE6TR



_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps

<Prev in Thread] Current Thread [Next in Thread>