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

[Howard Holden]

Hi Phil, can't speak about RF noise from the LEDs close up, as I have none 
near the radio room, but cost-wise you're probably better off going to 
Costco or Sams or a similar warehouse place than Lowes or HD.

The LEDs are pricier for sure, but they don't have the low output on turn-on 
like CFLs. Power consumption is similar.  The LEDs can be dimmed. I have 
both flood lamps in recessed holders, and normal  bulbs.

I have a CFL from Costco right on the radio bench, and get no noise from it, 
and the rest of the house is a combination of CFLs and LEDS, no more 
incandescents except on the front house exterior lights. I have not been 
able to trace any noise to the lights at all, regardless of type. All mine 
are the 120V medium base type, not the 12V track-lighting types.

Howie WB2AWQ



-----Original Message----- 
From: Phil
Sent: Saturday, December 26, 2015 11:48 AM
To: Boatanchors
Subject: [Boatanchors] OT: Which LED lamps are good and which ones bad (From 
a Radio noise standpoint)

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. . .

-- 
73 de Phil,  KO6BB
http://www.qsl.net/ko6bb/  (Web Page)

PRESENT RADIOS:
Grundigs:    S-350 (~2006), G6 (2011) & S450DLX (2014).
HOMEBREW:    7 Tube+Rect Regenerative RX for LF (built 2015)
Icom:        IC-735 Transceiver (~1990).
Icom:        R-75 With Cascaded 250 & 125Hz CW Filters. (~2005)
Icom:        IC-7200 Transceiver (~2015).
Radio Shack: DX-380 digital portable (~1990).
SDR:         Softrock Ensemble II LF (built from a kit 2015).
Zenith:      Royal-7000 Transoceanic Portable (~1968).

ACCESSORIES: HOMEBREW LF-MF Pre-Amp, MFJ-993B HF Auto-Tuner.
              HOMEBREW 8 Hz Audio Filter.

ANTENNAS:  88 foot Long Ladder-line fed dipole at 35 feet AGL for MW/SW.
            HOMEBREW Active Mini-Whip at 36 Feet AGL for LF/MW/SW.
            HOMEBREW 37 foot "Low Noise Vertical" at 11 feet AGL for 
LF/MW/SW.

Merced, Central California, 37, 18, 37N   120, 30, 6W CM97rh


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