[Premium-Rx] Looking for comments on TCI/BR Model 8174 receiv ers

[Carcia, Francis A HS]

I'm using XP Pro with no problems. The 95s1 is a little different it
converts to a 52 mhz IF then to base band I/Q. The 8174 goes to 40.455 then
to 455 then to 5 KHz. The DSP samples the 5 khz at 20 KHz and does I/Q
internal to the DSP. The 8174 took the conventional thinking of a good
analog design and hung a dsp off the low frequency IF. I measured the mds at
-130 dBM but have not done and dynamic range checks yet. fc   

-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Sig346 at netscape.net
Sent: Monday, December 19, 2005 2:03 PM
To: wwatson5 at cox.net; premium-rx at ml.skirrow.org
Subject: Re: [Premium-Rx] Looking for comments on TCI/BR Model 8174
receivers

TCI makes equipment for professionals. PCR1000 is designed, approved by FCC
(and similar regulatory agencies in other countries) and sold as a toy. 
It is a toy indeed, needless to say a zero performer below 30 MHz.

8174 is rather a conventional receiver employing DSP IF processing,
contrary to, say 95S-1A. Below 30 MHz 95S-1A is not much different,
though. I suppose many 8174s are retired now and being replaced
by so called software defined radios with RF preselection. They are
not better than 8174 on any  analog mode, where they really
outperform conventional DSP receivers are digital mode signal
acquisition, correlative direction finding and parallel multifrequency
intercept. Interesting enough, the hardware of some new professional SDRs
is much more complicated as compared with older DSP receivers. 

Anyway, 8174 is a great receiver, I tried one several years ago before
buying 95S-1A. The only point one must consider buying such piece
of equipment is control software. I will not necessarily work
properly under Win XP, for instance.
Regards
AW 

"joe.watson" <wwatson5 at cox.net> wrote:

>Correction:  PCR-1000.
>
>Joe
>  ----- Original Message -----
>  From: joe.watson
>  To: premium-rx at ml.skirrow.org
>  Sent: Monday, December 19, 2005 8:33 AM
>  Subject: [Premium-Rx] Looking for comments on TCI/BR Model 8174 receivers
>
>
>  I have seen some of the TCI/BR Model 8174 and similar receivers on eB
recently.  I have a growing interest in software defined radios and was
wondering how good these receivers really are.  Have any of you had any
experience with them?  How do they compare with Icom PRC-1000?
>
>  Would appreciate any feedback.
>
>  Joe Watson
>  Edmond, OK
>
>
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>
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