[TenTec] Question for Contesters:

[al_lorona at agilent.com]

Oops, meant this for Rick, not for reflector. Sorry for bandwidth.

Al



> -----Original Message-----
> From: tentec-bounces at contesting.com 
> [mailto:tentec-bounces at contesting.com] On Behalf Of LORONA,AL 
> (A-USA,ex1)
> Sent: Tuesday, June 08, 2004 5:21 PM
> To: tentec at contesting.com
> Subject: RE: [TenTec] Question for Contesters:
> 
> 
> 
> Hey, Rick!
> 
> Thank you for taking the time to reply. I agree; it's a fuzzy 
> definition
> right now. I work for a company that defines the cutting edge in
> digitization of signals and SDR and things like that, and so I have a
> purist's view of things. I have to come back to Earth to 
> avoid becoming
> too arrogant.
> 
> The Orion is almost there. There are signals that it can't demodulate
> whether due to bandwidth limitations, or not having the DSP horsepower
> to handle generic things like spread spectrum techniques or 
> PSK and MFSK
> *in-the-radio*. True SDR doesn't care what the signal's amplitude,
> frequency or phase are doing; it just requires another algorithm to
> decode the signal. But the Orion is definitely the closest things us
> hams have ever had to true SDR.
> 
> Thanks again, and talk to you soon. I really appreciate your message.
> 
> Regards,
> 
> Al W6LX
> 
> 
> 
> 
> > -----Original Message-----
> > From: tentec-bounces at contesting.com 
> > [mailto:tentec-bounces at contesting.com] On Behalf Of NJ0IP
> > Sent: Wednesday, June 09, 2004 12:26 AM
> > To: tentec at contesting.com
> > Subject: RE: [TenTec] Question for Contesters:
> > 
> > 
> > Al,
> > 
> > Yours was an interesting reply to my question.
> > I have tried to reply to everyone personally off-line (to 
> > limit the SPAM
> > here) but I want to reply to yours on the reflector.
> > 
> > I hear you and can not argue against anything you say, 
> other than the
> > definition of an SDR.  It's hard to get a handle on what SDR 
> > really is.
> > There are several definitions out there and I like Doug's 
> > description of it.
> > 
> > Bottom line, the definition seems to be a bit gooie right now 
> > and the ORION
> > certainly fits within the bandwidth of the description(s) of 
> > SDR that I've
> > seen to-date.
> > 
> > I think we would all welcome radios that could accomodate 
> new modes of
> > operation by simple firmware updates.  I believe the ORION 
> > and the Jupiter
> > can.
> > 
> > Thanks for the response.
> > 
> > 73
> > Rick
> > 
> > -----Original Message-----
> > From: tentec-bounces at contesting.com
> > [mailto:tentec-bounces at contesting.com]On Behalf Of 
> > al_lorona at agilent.com
> > Sent: Tuesday, June 08, 2004 12:55 PM
> > To: tentec at contesting.com
> > Subject: RE: [TenTec] Question for Contesters:
> > 
> > 
> > 
> > 
> > Lest anyone get the wrong idea, strictly speaking the Orion is not a
> > software-defined radio. I remember Scott at Ten Tec reiterating this
> > point here on the reflector during an early thread on the merits of
> > software-defined radios where too many folks were equating software
> > defined radios with the Orion. At the time I also searched 
> > everywhere on
> > the Ten Tec web site, and nowhere found the term "software-defined
> > radio". We should be very clear on whether we are lumping the Orion
> > (erroneously) into that broad category called 
> > "software-defined radio",
> > and if so, what exactly we mean by the term "software-defined 
> > radio". I
> > fear that it is quickly being diluted into a meaningless term.
> > 
> > Not every transceiver with DSP and softkeys and 
> downloadable firmware
> > can be called "software defined". "Software defined" 
> implies a lot of
> > flexibility that allows the radio to adapt to just about every
> > foreseeable signal that could possibly be conceived of. That almost
> > dictates that the architecture be one where the incoming RF 
> > is digitized
> > immediately after the antenna connector, and demodulation is
> > accomplished by software.
> > 
> > "Software-defined" means, among other things, that if a new 
> > mode called,
> > say,  "Polar Modulation with a little PSK58 frequency hopping 
> > thrown in
> > for good measure"-- whatever this is-- is invented this afternoon at
> > 4:00, that we will be able to download new firmware to 
> demodulate this
> > new mode in our radio. Does this define the Orion? Maybe I'm 
> > wrong, but
> > I don't think necessarily so.
> > 
> > Al W6LX
> > 
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> > 
> > 
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