A class C amp will preserve the CW waveform in a linear region of operation,
provided there's a means to sequence it out of class C during the T/R cycle and
when the amp key line is active. Typically two and three stage bias is used
but other clever methods have been designed over the years.
Paul, W9AC
Sent from my iPhone6
>> On Jan 13, 2016, at 3:41 PM, Kim Elmore <cw_de_n5op@sbcglobal.net> wrote:
>>
>> I don't think this is true. Class C will generate terrible key clicks
>> because it won't preserve the keying envelope.
>>
>> Kim N5OP
>>
>> "People that make music together cannot be enemies, at least as long as the
>> music lasts." -- Paul Hindemith
>>
>>> On Jan 12, 2016, at 09:24, Mike Feher <n4fs@eozinc.com> wrote:
>>>
>>> In CW it can run Class C, but for SSB it has to be linear. 73 - Mike
>>>
>>> Mike B. Feher, N4FS
>>> 89 Arnold Blvd.
>>> Howell, NJ, 07731
>>> 732-886-5960
>>>
>>>
>>> -----Original Message-----
>>> From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Charlie
>>> Sent: Monday, January 11, 2016 1:17 PM
>>> To: amps@contesting.com
>>> Subject: [Amps] Need for bias switch (CW/SSB)
>>>
>>> Folks-
>>>
>>> I am putting a 8877 amp together. I was wondering why some amps have a
>>> "CW/SSB" switch.
>>> Assuming the power supply can handle cw key down, other than higher
>>> efficiency, what other reason could there be for this switch?
>>>
>>> Thanks!
>>>
>>> Charlie N6CFH
>>> _______________________________________________
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>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
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>>> http://lists.contesting.com/mailman/listinfo/amps
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