[TenTec] 2.033

Ron Castro ronc at sonic.net
Thu May 4 14:36:00 EDT 2006


Downward-expansion only for SSB, and DE plus bandpass filtering for CW.  I 
have found that in SSB, anything that cuts into the high-end of the bandpass 
reduces the ability to copy.

In my experience, NR seems to work for CW, but I have never heard an NR 
scheme on any radio that helped me copy an SSB signal that I couldn't copy 
without NR.  I have a feeling that anything that would work better on SSB 
would require massive processing power that is not now available or 
affordable, and/or introduce unacceptable latency issues.

Ron N6AHA

----- Original Message ----- 
From: "Douglas Shock" <douglas.shock at gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Thursday, May 04, 2006 11:26 AM
Subject: Re: [TenTec] 2.033


> Let me pose a question to you guys:
>
> Regarding the NR function in the Orion
>
> What approach would be best suited if TenTec allowed you to choose your
> poison?
>
> On 5/4/06, Gary Hoffman <ghoffman at spacetech.com> wrote:
>>
>> Grant,
>>
>> Actually I've now gotten several off-line requests for just such a
>> reference.  I used to have several books and magazines that talked about
>> it.
>> I've told everyone that I will go and search through the "stuff" I've got
>> in
>> the house and see if I can find any of those documents.  I used to have a
>> lot of these references.
>>
>> Regards,
>>
>> Gary, AA2IZ
>>
>>
>> ----- Original Message -----
>> From: "Grant Youngman" <nq5t at comcast.net>
>> To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
>> Sent: Thursday, May 04, 2006 2:03 PM
>> Subject: Re: [TenTec] 2.033
>>
>>
>> > > As to what I am trying to prove - nothing.  This is just a
>> > > way in which DSP can be done, and it does not work by using
>> > > any sort of spectral information or filters.  I've noticed
>> > > that many here are not familiar with this approach.
>> >
>> > It actually sounds familiar as you describe it, and I'm reasonably sure
>> I've
>> > come across some material that may be what you're describing.  Of
>> course,
>> > today I can't find it.
>> >
>> > Any chance you can point to a web source with some information?  I
>> purchased
>> > the book that Jerry referenced in an earlier email -- maybe it will be
>> > discussed in there.
>> >
>> > Thanks ... Grant/NQ5T
>> >
>> >
>> > _______________________________________________
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>> > TenTec at contesting.com
>> > http://lists.contesting.com/mailman/listinfo/tentec
>> >
>> >
>>
>>
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