[amsat-bb] Re: echo
Sat Aug 26 07:40:35 PDT 2006
Hello nate- this is a perfect example of what happens when people snip
e-mails. Go back to the original: you will find that I noted that I have
the radio set in the Narrow FM mode for greater sensitivity.
On Fri, 25 Aug 2006, Nate Duehr wrote:
> On Aug 25, 2006, at 10:08 AM, McGrane wrote:
> > I should explain my setup here;
> > FT8800 dual band FM rig for recieve
> > 8 element yagi with mast mounted 18 db hamtronics preamp
> > 25 feet of 9913 coax
> Hasn't the FT-8800 been shown by some folks to have a "barn-door"
> wide receiver? I can't find the link for any real lab reports on it
> at the moment, and all the manufacturer's put on their brochures
> these days are the same numbers for just about every radio... .2 uV
> for 12 dB SINAD, etc... etc... etc... no real good specifications on
> how they perform with lots of off-frequency noise and or other crud.
> Putting a high gain pre-amp in front of it without some bandpass
> filtering is likely just crushing it. Can you see how it performs
> without the pre-amp and do live comparisons? You may find the pre-
> amp is actually making things worse.
> Amplifying noise and bringing in more out of band signals sometimes
> isn't very useful... (GRIN).
> Nate Duehr - WY0X
> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
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