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Re: 123MHz on FT-847



What I'm and other's are trying to say is that the noise level on receive
seems to be less. I find listening  to AO40 on the  817 much less fatiguing
then the 847. Something I guess you can't measure. I was using the
sensitivity numbers to show that there is nothing wrong with my 847's
receive.

73 Jeff kb2m

----- Original Message -----
From: "Wayne Estes W9AE" <w9ae@earthlink.net>
To: <amsat-bb@AMSAT.Org>
Sent: Sunday, March 16, 2003 8:54 PM
Subject: Re: [amsat-bb] 123MHz on FT-847


> Jeff Griffin wrote:
>
> The 817 blow's the 847
> away on receive.  I went through the alignment procedure about a year ago
> and achieved  a .10 uV receive sensitivity , the factory worst case spec
is
> .125 uv. I need to check the 817. It must be good, even though Yaesu uses
> the same receive sensitivity spec of .125 uV.
>
> Wayne replies:
>
> The exact sensitivity of your radio doesn't matter after 30 dB of gain in
> the downconverter (unless one of your radios is broken).
>
> I have a FT-847 and FT-817, but I've only used the 817 to listen to AO40
> once, for the Mode VS experiment.  I have noticed that the FT-817 S-meter
is
> extremely non-linear and doesn't correlate at all with the signal quality
> that I hear.
>
> Wayne Estes W9AE
> Mundelein, IL, USA
>
>
> ----
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