At 11:22 AM 9/28/97 -0500, you wrote:
>On Sun, 28 Sep 1997 18:39:45, Nick, VK9LX wrote:
>
>>My apologies for being off the topic...
>>Can any one tell me please what is the difference between
>>3CX3000F1 and 3CX3000F7?
>>I would like to hear from someone who has used this or similar
>>tube in hf pa.
>>Is there any 'reflector' devoted to hf amplifiers on the Internet?
>>Nick
>__________________________________________________________________
>I am also interested in the same answer! Rich, Tom, Carl?
>
>From the Varian Power Grid Tube Catalog:
3CX3000A1/8238 3CX3000A7
3CX3000F1/8239 3CX3000F7/8162
Plate Dissipation: 4000 4000
Grid Dissipation: 50 225
Filament Thoriated Tungsten Thoriated Tungsten
Voltage 7.5 7.5
Current 51.5 51.5/50.5
Amplification 5 160
Transconductance 11,000
Max ratings
Plate Volts 6000 5000
Plate current 2.5 2.5
Typical Operation AB1 Grid driven AB2 GG
Plate Volts 5500* 4800
Plate Current 2.2* 2.0
Drive Power 0 410
Power Output 8250* 7260
* two tubes
Note: The A1/F1 versions are coaxial base tubes
The A7/F7 versions have filament and grid leads
73,
... Joe Subich, W8IK ex-AD8I
<w8ik@ibm.net>
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