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

[D C _Mac_ Macdonald]

For those applications where you prefer to use incandescent lamps, 
choose those made for operation at 130 Volts.  They last a LONGGG 
time in 120 - 125 Volt service! 
 
These are classified as "special purpose" and are still available. 
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* Oklahoma City, OK * 
* USAF, Ret'd 61-81 * 
** FAA, Ret'd 94-10 * 
* * * * * * * * * * * 
 
 

 
> To: boatanchors at mailman.qth.net
> From: ko6bb1 at gmail.com
> Date: Sat, 26 Dec 2015 19:48:01 +0000
> 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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