As much as I believe Hallicrafters and Johnson are well designed transmitters,
I don't believe they use NFB in their finals. The equipment at my QTH is
exclusively boat anchor.
David
KC2JD
-----Original Message-----
From: Peter Chadwick [mailto:g3rzp@g3rzp.wanadoo.co.uk]
Sent: Thursday, September 22, 2005 2:04 PM
To: R.Measures; dhallam@rapidsys.com
Cc: Amps@Contesting. Com
Subject: Re: [Amps] 3rd Order IMD
Rich said:
>Because 6146 amps typically use RF-NFB, the total IMD is c. â38db from
>pep.
Caveat: Well designed 6146 amps use NFB. Not all of them do.....
73
Peter W6/G3RZP (San Diego this week).
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