[Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

[Paul Van Dyke]

I I was going to say the same thing .... my unit is #38 and would be glad
to lend it for testing

Paul. KB9AVO

On Mar 9, 2017 12:50 PM, "Matt Murphy" <matt at nq6n.com> wrote:

> I'd be willing to send Rob my KX2 for testing.
>
> 73,
> Matt NQ6N
>
> On Thu, Mar 9, 2017 at 2:42 AM, Jim Brown <jim at audiosystemsgroup.com>
> wrote:
>
> > On Wed,3/8/2017 8:41 PM, w7aqk wrote:
> >
> >> you are right to be concerned about how clean a transmitter is, but
> there
> >> are regulatory requirements about that. If you don't meet those
> standards,
> >> you supposedly can't sell it!!!
> >>
> >
> > Sadly, it goes FAR beyond that.  See my comparison of ARRL Lab data for
> > selected popular rigs, some of them in the $10K range.   Some of the most
> > expensive are really dirty on CW. http://k9yc.com/TXNoise.pdf  Also look
> > at
> >
> > http://k9yc.com/P3_Spectrum_Measurements.pdf  which consists of
> > measurements I've done myself of rigs that were made available to me.
> >
> > Most of the bad signals I hear are, I think, because someone is running
> >> things at "maximum'!
> >>
> >
> > Partly true, but some rigs are FAR dirtier than others. The link about
> > concentrates on CW.  Many popular rigs generate splatter in their output
> > stage due to poor design of TX ALC. Using ALC between the rig and a power
> > amp to set TX power is recipe for splatter and clicks. Mistuning a power
> > amp, or failure to match an antenna to the power amp also causes splatter
> > and clicks.  See http://k9yc.com/K6XXAmpTalk.pdf
> >
> > 73, Jim K9YC
> >
> >
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