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Re: [TenTec] Digital Signal Processing

To: <tentec@contesting.com>
Subject: Re: [TenTec] Digital Signal Processing
From: "Carl Moreschi" <n4py@earthlink.net>
Reply-to: tentec@contesting.com
Date: Sat, 14 Aug 2004 00:57:59 -0000
List-post: <mailto:tentec@contesting.com>
Merle,

Actually, the Orion does do 10 meter FM.

Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: "Merle Bone" <merlebone@charter.net>
To: <tentec@contesting.com>
Sent: Saturday, August 14, 2004 12:52 AM
Subject: [TenTec] Digital Signal Processing


> N6KB said:
> "Tom,
> I agree with you on a lot of the points you have made. I am sure you
> will get a lot of responses from people calling you "backward" or saying
> that if we all had your attitude we would be still be using spark.
> Anyway I agree that a lot of the "enhancements" using digital techniques
> are not providing real performance improvements so much as they are
> creating bells and whistles"......
>
............................................................................
> ................................................
>
> Sometimes I think people have forgotten that DSP stands for "digital
signal
> processing."
> The CPUs in the Orion utilize "digital signal processing" to perform the
> following functions:
>
> VFO Functions
> IF Filter functions
> 1st Mixer function
> SSB Modulator/Demodulator functions
> AM Modulator/Demodulator functions
> CW keying waveform creation
> CW Demodulation
> AGC Circuit functions
> ALC Transmit function
> Notch Filter functions - manual and automatic
> Noise Blanker
> Pass Band Tuning
> Noise Reduction
> RF Power Control
> Transmit Audio Processing (Compression)
> Receive Audio Equalization
> Transmit Audio Equalization
> Spectrum Scope
> and others......
>
> I'm not sure which of these functions you would label "bells and
whistles?"
> It's been clear, for some time, that some people are "frustrated" that the
> Orion will not do more then 40 WPM QSK. Others, all though they have used
> good self control, probably wish the Orion would do 10 Meter FM. But to
> confuse "digital signal processing" with the "cause of all evils," is just
> not to understand the technology that is developing as "the state of the
art
> in communications technology".
>
> Not withstanding  the early problems, which have largely been fixed, the
> Orion is today's proof of the power of the "digital signal processing"
> technology. I think the independent tests have shown that the Orion is the
> best overall commercial ham bands transceiver that has been built to
date -
> even if it doesn't do 10 Meter FM. As digital signal  processors become
more
> and more powerful, new mathematical algorithms will undoubtedly improve
the
> performance of  future radios.
>
> So communicating requirements to companies like Ten-Tec makes good sense -
> maybe 10 times is enough. But  it probably isn't too smart to try to tell
> them how to build the radios.
>
> Merle - W0EWM
>
>
>
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