Ron,
I am not sure, but I think the reason the noise is worse on 40 m is that
the line from the ballast to the lamp is about 30 feet (almost 1/4 wave
length on 40 m). At least that is the way it has been on every grow
system that I have seen. Good luck and do keep us informed.
73, Tom W0IVJ
On 3/10/2013 2:43 PM, Ron, K6KYJ wrote:
Thanks much for the feedback thus far.
What I find interesting is the grow light noise observed on 7 mHz. By far, that
is my worst band. I actually was able to work TX5K on 80 CW ABOVE the noise
level of S8 on that band. On 40, I am unable to work anything. 20 meters and
up is still possible IF there is very little band noise.
PGE is due to visit by the end of the day on Tuesday and hopefully we can rule
out the LED street lights as a source.
In my neighborhood, if grow lights are in use, it would only be for growing
cannabis.
I will keep this thread updated as hard data develops. 73.
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