[Elecraft] RX Test (long)

[Guy Olinger K2AV]

I agree.  These artificacts have "sidebands" that increase and
decrease with content in the normal passband, but their separation and
frequency span is as if the frequency content (not the amplitude) of
the normal passband were divided by 2 or 4.  They are way down, and do
not exceed the amplitude of the 7.8 and 12 artifacts.

73, Guy.

On Sat, Jan 9, 2010 at 9:53 AM, Joe Subich, W4TV <lists at subich.com> wrote:

> I see 7.8 and 12 KHz products clearly at about 10 dB above the
> stopband noise with no signal present.  They get much stronger
> with signals present and additional products appear.  Even
> though the maximum level is still 60 dB below the listening
> level, they are still clearly above the "masking" level and
> they will be audible to someone with normal hearing with
> "full range" headphones and/or speaker.
>
> 73,
>
>   ... Joe, W4TV