I have a 10-year old Sony "digital" HDTV. We bought it when forced to go
DTV with retirement of the old NTSC analog standard. 10-years later, the
original "standard" for streaming video (Netflix) has changed, so we are
forced to add yet another appendate from Ruku to view the "new" streaming
standard. Grrrr....... Gotta just love this digital world we reside in.
I have no problems with Sony TV. HOWEVER, the signal and appendages
"protector" we bought with the TV was/is a problem. It evidently has a
SMPS...... Need I write more????..... We bought the "protector" as we
went through three Direct TV receivers due to close-by lightnng discharges
(to a ridge just 1/4-mile to our immediate west). Anything conducting to
that which goes in or out of that $100 "protector" is peppered with
after-market ferrites.
*************************************************************************
*Jim, K9YC*: Anything and everything "digital" produces copious RFI in
spite of the Pin 1 problem. It's universal with anything and everything
digital. Yes, I fully appreciate the Pin 1 problem, even applied to RF!
I'd throw in yet another item: that of the total lack of familiarity with
Mr. Fourier and his famous (or infamous) series which mathematically
confirms anything with a high rise time produces RFI. The kids are not
taught that, even in graduate school!
Dave - WØLEV
On Tue, May 20, 2025 at 7:05 PM Jim Brown <jim@audiosystemsgroup.com> wrote:
> On 5/20/2025 11:28 AM, Tim Duffy wrote:
> > I have six LG 4K and 8K TVs here - no RFI. Maybe the Yamaha issue is the
> problem - I don't know...
>
> Tim's right on suggesting not to rule anything out. I have a big Yamaha
> RX, 10-15 years old, that routes audio and video through it in several
> formats. When I installed it, I choked cables to speakers and antennas
> before turning it on. All those interconnect cables are possible
> antennas for Pin One.
>
> Another point -- in the world of consumer products, the word "digital"
> is very much a marketing term. For example, digital antennas. :) In the
> case of a TV, the only technically correct use of the word is that the
> RF tuner and demodulator for digital signals and some logic to support
> those signals, is built-in, rather than an exterior box. My 10-15 year
> old Sony had such a tuner for first generation digital TV standards
> built in.
>
> A new digital TV Standard (NTSC 3.0 I think it's called) was introduced
> maybe 5 years ago, and is being pretty widely adopted major markets. It
> has many interesting capabilities, including the ability to transmit
> pay-TV, in which the decoders are connected to the internet and make
> extractions from our bank account. Current generation TV sets will have
> a new generation tuner built in, and some are better than others. There
> are also several outboard tuners that that feed audio/video inputs of
> existing sets.
>
> 73, Jim K9YC
>
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>
--
*Dave - WØLEV*
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