Re: [IRCA] SRF-59 Alignment Procedure / TRF?

["W. Curt Deegan" <WWWR@xxxxxxxxxxxxx>]

An interesting idea, Fred.

A Google search found a presentation from a couple years ago by a 
Columbia University researcher on VLSI --  Very Large Scale 
Integration, i.e. big IC's -- implementation of TRF.  It was just a 
lecture presentation "foils" set, so there is no way to know what the 
suggested capabilities of the technology might provide.

Something else for those interested to investigate.

Despite this obvious Sony marketing ploy -- planting glowing 
performance reports on gullable DXer message forums -- I ordered my 
pair of SRF-59's a couple days ago.  If the audio phasing scheme 
works as described, I'll finally be able to eliminate the IBOC hiss 
of 560 WQAM Miami, so I can hear my favorite station on 570, Radio 
Reloj, Santa Clara, CU. ;-)

Curt
-------
W. Curt Deegan
Boca Raton, (southeast) Florida, USA


At 10:52 PM 12/23/2007, you wrote:
>Let me toss out a really dumb question: since no one seems to be able to
>determine the IF of the SRF-59, could it be that it has no IF? Could Sony's
>sophisticated radio chip be a TRF? Which would help to account for its
>astonishing performance?
>
>As Wikipedia notes, "[A TRF receiver is] A radio receiver, usually comprised
>of several tuned radio-frequency amplifiers followed by circuits to detect
>and amplify the audio signal. Prevalent in the early 20-th century, it can
>be difficult to operate because each stage must be individually tuned to the
>station's frequency." With contemporary cicuitry, wouldn't a
>high-performance "TRF-on-a-chip" be feasible?
>
>Fred Schroyer
>Freelance Science Writer / Editorial Consultant
>955 Sixth Street - Waynesburg, PA 15370
>(40 air mis S of Pittsburgh - 20 air mis N of Morgantown, WV)
>Home 724-627-8844 - Work 304-599-7830 x 1120
>freditor@xxxxxxxxxx


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