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Re: Topband: Slightly OT - amplifier noise

To: topband@contesting.com
Subject: Re: Topband: Slightly OT - amplifier noise
From: Mike Waters <mikewate@gmail.com>
Date: Tue, 17 Mar 2020 12:26:10 -0500
List-post: <mailto:topband@contesting.com>
Tom Rauch, W8JI has a nice webpage dedicated to the MFJ-1025/1026 at
https://www.w8ji.com/mfj-1025_1026.htm.

A few relevant excerpts follow.

"The only drawback of the higher noise floor of the MFJ-1025/1026 is you *must
place it after any amplifiers used with low-level low-noise antennas*. The
MFJ-1025/1026 noise floor is typically around 14dB."


"The MFJ1025 series, despite being manufactured as inexpensively as
possible, outperforms any other unit I have tested (by a large margin) over
its intended *frequency range of 1.8-20 MHz*.  The exception is the DX
Engineering NCC-1..."

That being the case, shouldn't noise tests be done on 160 or 80 meters,
rather than 10 or 15 meters?

73, Mike
W0BTU
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