>> From: Rich Measures <measures@vc.net>
To: <amps@contesting.com>
>> Date: Mon, 28 Jul 97 12:17:17 +0000
>
>> >What is the difference between audio amplification and linear RF
>> >amplification?
>>
>> Audio amplifiers use a 2-tube push-pull configuration with a transformer.
>> Each tube supplies half of the waveform.
>
>Not true, audio amplifiers can use any configuration. Most audio
>amplifiers are single ended, unless high power is needed.
The only audio amplifier configuration listed in the Eimac technical
specification sheets is push-pull. This discussion is not about low
level amplification, Mr. Rauch.
...snip...
>>Audio amplifiers can amplify
>> non-coherent waveforms and coherent waveforms. Push-push RF linear
>> amplifiers only amplify coherent waveforms.
>
>Not true. RF amplifiers can amplify waveforms that vary in
>period
Period equals 1/frequency. Class A broad-band amplifiers--such as those
used in receive applications--amplify waveforms that change in
period/frequency. Tube-type high power linear amplifiers are band
specific. To change frequency, one needs to change the bandswitch.
- We have been talking about high power tube-type RF linear amplfiers.
Mr. Rauch is talking about RF amplifiers in a receiver. [AMPS] is not
about receiver amplifiers.
Rich---
R. L. Measures, 805-386-3734, AG6K
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