[Elecraft] RF radiating appliances

[Keith Heimbold]

I have S5 noise on 40m and S7-9 noise on 80m with a hf6v vertical antenna. I can almost live with the noise on 40m but on 80m it is almost not worthwhile using.  All my other bands are basically S1/2 noise level all the time. On 6m I have a 15 db preamp and noise may go up to S4 at the worse.

Not sure if my noise levels are generated from my house or neighbors, but I plan to do a similar assessment to see what is going down.

Keith
AG6AZ

Sent from my iPhone please excuse typos

On Jan 20, 2012, at 4:40 PM, "Don Wilhelm" <w3fpr at embarqmail.com> wrote:

> OTOH,  There are FCC limits for unintentional radiators too.  Yes 
> proving that those devices are radiating and making a case for FCC 
> action may indeed be difficult, but from what I have found from various 
> posts are that Plasma TVs may make a good "first test case".  I cannot 
> initiate anything myself because I do not have the problem - the nearest 
> neighbor is 1/ mile away and does not have a plasma TV.
> 
> 73,
> Don W3FPR
> 
> On 1/20/2012 6:37 PM, Sandy wrote:
>> Some interesting information on some of those links!  One of the BIG
>> problems we face is what I call the "digital" mindset.  What I mean by this
>> is some of the late technology telemetry devices that use something other
>> than what used to be called "analog" transmission and reception systems.
>> The "digital" engineers don't seem to understand the "analog" RF world and
>> the havoc some of the digital devices are causing, especially in increasing
>> the background noise levels and EMI levels.
>> 
>> Take just ONE factor like the "CFL" lamps.  A lot of these are operating in
>> the 20-60 Khz. region and generating a plethora of harmonics that cannot be
>> filtered out!
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