[Elecraft] LED Lamps and HF RFI?

[Joe Subich, W4TV]

I just replaced a couple old 65W equivalent CFL floods in 6" cans
located in a bathroom with retrofit LEDs and have not noticed any
increase in noise.  The retrofit LEDs have an adapter that screws
in in place of the incandescent/CFL bulb.  The replacement unit
simply snaps in place of the old trim ring and plugs into the
adapter.

The units I used were Utilitech from the local Lowes.  I did not
use replacement power supplies and rewire the fixtures.  If needed
I can go back to the CFL or conventional incandescent floods just
by unscrewing the adapter, screwing in CFLs and replacing the trim
ring.

The new fixtures are significantly brighter than the 10 year old
CFL bulbs.  I'm planning to replace another half dozen mixed CFL
and incandescent floods with the LED retrofits over the next few
months.

73,

    ... Joe, W4TV



On 2015-05-11 10:13 PM, Dauer, Edward wrote:
> Had an electrician at the operating QTH today to discuss replacing the
> recessed ³can² lighting throughout the house.  He suggested replacing the
> incandescent cans (now 65 watts per bulb) with LED lamps (same lumens with
> 10-13 watts per bulb).  I have looked at the Internet on the question of
> RFI from LED bulbs and see wildly inconsistent reports.  It is the case
> that HF radios like the K3 have LEDs in their panels; but I would be
> installing as many as 60 LED fixtures running at 10-13 watts each.  My
> caution comes from my novice days in the 50s when a single fluorescent
> lamp put my hamming out of business - things were quiet when the only
> light source was the filament of a 6146 and the dial lamps on the HQ-100.
> I know that LEDs aren¹t at all the same; but I don¹t want to relamp the
> house if it puts me off the air.  And if they (or their power supplies) do
> generate RFI in the HF bands, would the K3¹s NR get rid of it?  Anyone
> have any good data on this?
>
> Tnx,
>
> Ted, KN1CBR
>
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