It sounds like an industrial tube for RF heating.
It is then strictly a Class C tube.
Carl
KM1H
----- Original Message -----
From: "budi santoso" <yb1bs@yahoo.co.id>
To: <amps@contesting.com>
Sent: Monday, December 03, 2007 7:36 PM
Subject: [Amps] Re amperex AX7T69RB trioda
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> On 3 Dec 2007 at 15:36, budi santoso wrote:
>
>> I got NOS Amperex AX7T69RB trioda
>> specification for this tube :
>> max dc plate voltage 8 kv
>> max dc plate current 2 A
>> plate dissipation 4500 W
>> freq. of max. rating 110 MHz
>>
>> Can I use this tube for linear amplifier?
>
>>What is the mu factor? (Amplification factor)
>
>>If it is a high-mu tube, about 200, it would probably be a good
>>amplifier. If it is a low-mu tube, about 40 or 50, it would take far
>>too much power to drive it.
>
> It has low amplification (21)
>
>>Also, consider the filament power required. It might be much too
>>high for amateur use.
>
> filament is 12.6 V 35 A
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> 73
> Budi Santoso / YB1BS
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