[RFI] New HDTV Purchase - What to Avoid?

[K9MA]

I was lucky to have more cooperative neighbors, who did let me buy them 
a new TV.

Plasma TV are impossible to fix. They are big enough that they radiate 
directly at HF, so choking the cables won't help. And the FCC has no 
limits on radiated emissions below 30 MHz.

73,

Scott K9MA



On 12/9/2020 5:38 AM, Rob Atkinson wrote:
> Thanks for comments.
>
> Epilogue:
>
> I tried to buy the neighbor's plasma TV; offered to buy them any new
> TV they wanted as long as it wasn't a plasma and give me the one they
> had (so I could scrap out parts and let a pal blow holes in the screen
> with a shotgun) but no deal ("But I LIKE my plasma TV.")   By the way,
> these were the kind of people who would wake up and flip on the TV and
> leave it on all day into the evening whether they were watching
> anything or not.  I knew when they were awake because BAM, the RFI
> would come on wiping out a lot of 160 m.
>
> I spent a number of years experimenting with various combinations of
> small rx antennas and phasing with unsatisfactory results.   Finally,
> I hit on the right setup.  A pair of rotatable Pixel Loop antennas,
> each on its own mount with TV rotator, and feeding a NCC1.   I bought
> some of this second hand but even so, the whole setup including
> rotators, feedline and mounts cost around $2000.  But, on 160 m., I
> rotated each loop so as to put the TV in its respective null.  Then I
> used the phasing box to null out what was left.  Finally, I had
> nothing but sweet band noise while the TV raged next door.   Ahhhhh,
> relief at last.
>
> Then about 9 months later the neighbors moved to Texas and took the TV
> with them.
>
> 73
> Rob
> K5UJ
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-- 
Scott  K9MA

k9ma at sdellington.us