[ARC5] On Hacking and TVI

[Peter Gottlieb]

I've heard of large electronically steerable arrays but mostly if there's a lot 
of noise emergency and other services are just as screwed as we are.

In Katrina due to cost and availability satellite comms were scarce so many 
wanted to use HF.  Conditions were marginal to begin with but long distance 
sources of noise such as BPL were a big problem. Murphy's law states that band 
conditions are such that only unwanted noise propagates efficiently.  With BPL 
there is a provision to have the offender move from channels they are 
interfering with, however, if you are picking up such interference from a 
distance how do you know whom to contact?  Realistically you don't, and the 
links don't get established.  And don't get me started on the cheap Chinese 
consumer electronics that blow right past all FCC A limits, never mind B.



On 10/16/2012 11:00 PM, mcenfalz at humboldt1.com wrote:
> I suppose most of the bad rep Hams sometimes have is a leftover racial
> memory from the 50's TVI.
>
> Today, Consumer Electronics and $$ are exacting their revenge. The
> stickers all say "must accept interference" but no one thinks about us
> having to accept harmful interference from them.........
>
> We have a local fellow who passes traffic for trans-pacific boaters, but
> he lives in a relatively quiet RF location. Me - not a chance. Classic
> urban RF nightmare: Powerlines, plasma screens, computers, porch lights,
> dimmers. Someone calls SOS; I'll never hear them.
>
> I wonder how other Services deal w/all the RF noise? Massive DSP on the
> input side?
>
> 73 DE JIM K6FWT
>
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