Bret,
Actually you are comparing apples and oranges.
Any "in-line" DSP is an audio DSP processor, and it can only do
filtering and noise reduction functions at audio frequencies.
The KX2, being an SDR radio, does everything with DSP - modulation,
demodulation, all filtering as well as some pre-processing for the audio
stages is done mathematically.
What we used to think of as the modulator, detector, IF filters, AGC,
etc. in analog radios does not exist in the KX2/KX3.
Instead, the incoming RF signal is sent to a mixer which converts that
signal to 8kHz (or baseband in the case of the KX3 without the IF shift
active).
The resulting 8kHz signal is digitized by an analog to digital converter
(ADC).
That digital output is mathematically massaged to produce the kind of
demodulation and filtering that you have requested from the KX2 knobs
and buttons. Once that math result is obtained, it is sent to a digital
to analog converter (DAC) as an audio signal which is then amplified to
headphone or speaker volume.
So bottom line, while the audio DSP units (such as the BHI unit you
mentioned) can 'massage' the audio, the KX2 does that massaging at what
would be the equivalent of the IF in an analog radio, so the result is
that the signal is processed much earlier in the receive chain before
distortion products can be present by the distortion inherent in each IF
and detector stage.
73,
Don W3FPR
On 7/30/2016 6:06 PM, MaverickNH wrote:
For those who have been with a Elecraft KX2 longer than I (1st day), just
wondering how you might compare the KX2 DSP to a bhi Compact-in-Line DSP. I
have one for use with other rigs lacking DSP. I'll get to trying it with my
KX2, but I'm on the early learning curve end still. The KX2 is mighty sweet!
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
