[Boatanchors] OT: Which LED lamps are good and which ones bad (From a Radio noise standpoint)

[Bill Cromwell]

Hi,

The ones I have are made by Cree. I but the "Daylight" models as opposed 
to the wimpy, namby-pamby "soft white light bulbs. I wanna *see*. I used 
a solid state AM radio to probe for "crap" and I found it when i got 
inside two incehs from the lt bulb. So I stay back three or more inches. 
They aren't cheap. But they are efficient and I consider them quiet. 
They are the first ones I tried and then read horror stories from hams 
with LED bulbs (and no brand names or other data cites). I have bought 
quite a few and replkace most of the lights in my home with them - 
especially LCD ones. I have been watching my electric bill slide 
downward for almost a year and the move to LED bulbs is one of the 
contributing factors.

I would suggest actually measuring the distance from the bulb to the 
radio. Maybe you already did but a foot seems awfully close. One of mine 
is at two feet (I consider THAT as awful close) and *all* the rest are 
much farther.

I have been pleased to see others are reporting good performance from 
other brands and models of LED lighting.

Happy New Year and..

73,

Bill  KU8H

On 12/26/2015 02:48 PM, Phil wrote:
> OK, I'm posting this to several lists (NOT cross-posting) as I want to 
> have as much information at hand as possible before buying (they're 
> not cheap).
>
> I have a floor lamp immediately adjacent to my operating position, 
> less than 12" from the SDR receiver.  As the lamp is typically on over 
> 12 hours a day I actually 'prefer' to use a CFL in it (Edison Base) to 
> keep operating costs down.  Problem is, the CFL generates "hash" in 
> the SDR.  SDR is in a plastic case and the hash is picked up via the 
> inductors in the add-on LPF, as well as any portable radios I set on 
> the operating bench and listen to AM on (they have loopstick 
> antennas).  Because of this I've been switching off between a CFL and 
> the old style 60 Watt incandescent lamps (which I actually prefer, but 
> they take more current and burn out regularly).
>
> I've considered the purchase of LED lamps for that position as well as 
> the ceiling lamps (takes 2).  The last time I looked they were very 
> 'pricey', more than I'd like to spend on an 'experiment'.  BUT I 
> thought I might go down to either Best Buy or Lowe's and see what they 
> had in stock (Lowe's is probably the best place).
>
> Before spending my money, I wonder if anyone could tell me what lamp 
> brands are "RF Quiet" and more importantly, WHICH ONES ARE NOISY AND 
> TO AVOID!
>
> Thanks all, and HAPPY NEW YEAR. . .
>