[Elecraft] Amplifiers in general

Doug Turnbull turnbull at net1.ie
Sat Dec 31 15:39:55 EST 2016


Fred,
    I agree with all you say but still when reading a signal in the noise on
160M believe me a dB can help in recognizing a call sign.   I often think
that operating on TB is some what like operating on VHF/UHF.  It is
certainly a struggle with noise.

                 73 Doug EI2CN

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Fred
Jensen
Sent: 31 December 2016 19:36
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Amplifiers in general

Please let me correct my typo:  100 mW is 30 dB down, not 40.  Correct 
hand, wrong finger.  100 mW should be close to S0, 2 S-units into the noise.

73,

Fred K6DGW
Sparks NV USA
Washoe County DM09dn

On 12/31/2016 11:25 AM, Fred Jensen wrote:
> One can do this with the NCDXF Beacons ... they change in four 10 dB
> steps, 100 W, 10 W, 1 W, and 100 mW.  No sunspots right now, but you
> might be able to hear one or two of them on 14100.  Most interesting
> thing I notice is, while the 100 W signal may be S6 in S2 noise, I can
> still hear the 100 mW signal which should be 40 dB down [~S0].  The math
> is sound and exact, the reality ... not so much.

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