Hi Jim,
Has nothing to do with digital, has everything to do with Pin One
Problems. There's a lot on my website about it. I have no issues with a
Sony I bought about 15 years ago.
General rules of thumb. Concentrate on the best RX antennas -- input
from cable box, for example. Note your frequencies that excite it,
tailor chokes to those frequencies. Buy a bunch of #31 clamp-ons, 3/4-in
i.d., and some 1-in i.d. for larger cables. Pin One problems are not in
any way logical as to how functions are affected. Choke both inputs and
outputs. I suggest disconnecting various I/O cables until the RFI goes
away or gets better. Remember that chokes are broadly resonant -- 5
turns through one of those cores is a good starting point for 40, 20.
Fewer turns for for 15, 20. For 2.4-in toroids, follow guidelines for
RG400 TX chokes.
If you bought the TV from Costco, take it back. :) When I buy anything
that could have RFI or other issues, I buy it from Costco.
73, Jim K9YC
On 5/20/2025 10:49 AM, Jim McCook wrote:
Have any of you recently switched from an analog TV to a new digital
model? If so, have you experienced any new problems with RFI? My not-
so-old 65" Sony LED TV power supply failed, so I got a nice 65" LG
digital model, which required changing the main receiver with a new
Yamaha digital model. Previously I had no RFI in the TV, but with the
new arrangement it's a nightmare. I have tried using ferrite everywhere
on both units with no results. Without getting into the usual
approaches on how to stop the RFI, I simply wonder if this is a problem
with newer DIGITAL models? I sure wish I had an analog TV again! 73,
Jim W6YA
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