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Re: [Amps] Need for bias switch (CW/SSB)

To: <>, "RCM" <>
Subject: Re: [Amps] Need for bias switch (CW/SSB)
From: "Carl" <>
Date: Sun, 17 Jan 2016 13:27:26 -0500
List-post: <">>
-100V isnt even close to a full cutoff description since typical operating bias in Class C is -90V for 250B's.


----- Original Message ----- From: "RCM" <>
To: <>
Cc: "Charlie" <>
Sent: Sunday, January 17, 2016 11:26 AM
Subject: Re: [Amps] Need for bias switch (CW/SSB)

Back then, you keyed the cutoff bias of the amp.

My Central Electronics 20A had -100 vdc out the back that followed the keying and did a full cutoff
of the HB 4X250's with operating bias set for class C.

No clicks....

On 01/13/2016 03:41 PM, Kim Elmore 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 <> wrote:

In CW it can run Class C, but for SSB it has to be linear. 73 - Mike

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