[Elecraft] OT: RF interference from grow lights (maybe).

[ab2tc]

Hi Ralph and all,

Thanks for your response and I did receive several private E-mails as well.
It sounds like a phone call to the power company should be my next move. If
I just could find a way to get to a live person without going through a
million automated responses and interminable waits!

Loose connectors and clamps can apparently cause many different types of
interference so can not be ruled out in my case either. I have had several
cases like that over the years and they sounded and look quite different
from my current interference. But it sounds like nothing should be ruled
out. 

Thanks again, all.

AB2TC - Knut


RALPH TURK wrote
> Hi
> I had a similar situation here in Tucson AZ  My spectrum analyzer,a Tek
> 492 showed groups of carrier like indications 10-20 db above the noise
> floor.  First think I thought "Grow Lights"  I was told that the osculator
> in a grow light is about 2.3 Mhz.  The interference looked like it was
> every 2.3Mhz up the band.  Levels were all over the place.  Called the
> local Power Co and after lots of pleading they finally sent a tech to
> check it out.  He connected up to my dipole antenna and looked at the
> pattern and concluded it was a ground connection proble.  Got a crew out
> the next week and traced it to a pole out about 2000ft from me.  The
> problem was radiating 
> from the HV line for about 2 miles.  Fixed the ground and problem
> solved.  I had traced to one of three poles using a portable radio tuned
> the my main problem freq of about 5.2 Mhz and was able to hear the
> problem.  The main problem was a loose ground clamp up on the pole.  The
> power company also used an acoustic parabolic mike which pin-pointed the
> exact connector.  New connector problem solved
> Ralph, W7HSG/AFA9RT
>  
>> On 08/20/2020 7:07 PM ab2tc <

> ab2tc@

> > wrote:
>> 
> <snip>





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