Re: [Elecraft] OT: LED Light Bulbs

2017-10-25 Thread Kevin Stover, AC0H
When I was changing the bulbs out I took the opportunity to remove all dimmers, never really used them, and a touch lamp the wife hated (large blessing on me). The wife has been looking at touch faucets for the sink. They've got to be an RFI nightmare. I said NO. Plumber makes enough the way

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Bob McGraw K4TAX
Yes, exactly my point. Although one may find the local AM or FM station is "exciting" these lamps, be they CFL or LED.  They may, to some extent, generate the crap we hear.   For us hams, when we transmit the noise may be produced but is not of concern in as much as they are quiet when we

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Jim Brown
On 10/24/2017 5:55 AM, Bob McGraw K4TAX wrote: When the transmitter was activated, the spikes of noise appeared.  With the transmitter off, the spikes again were not present.    Not a real analytical or scientific method but some degree of indication that some are better than others, some are

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Dave Cole (NK7Z)
My big worry with regards to LED lights is that they have parts that are sourced from different makers from run to run... You get LED lights that on one run are dead quiet, and on subsequent runs are not quiet... I bought 20 of these bulbs, after testing one, and so far they all appear

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Bob McGraw K4TAX
The only time I've noticed RFI issues from CFL or LED bulbs is when they are being excited by RF.  I've measured 3 or 4 different ones of different brands and wattage ratings.  This was done using a fixture where by the bulb was mounted on a suitable surface in a socket with the transmit

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Charlie T
I must have at least 30 LED bulbs around the house ranging from ½W to 23W (eq. to 120W incandescent flood light). Most are in the range of 25 to 60 Watt equivalent (200 to 800 Lumens). Some are 5 years or more old and are from many different manufacturers. The distance to antennas is anywhere

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Mark Goldberg
;hamsh...@n4st.com> wrote: >>>>>> >>>>>> I have noticed the background noise level growing on the HF bands, >>>>>> and for me, especially on 18 Mhz. I need to declare war on RFI and find >>>>>> out what is causing this.

Re: [Elecraft] OT: LED Light Bulbs

2017-10-24 Thread Clay Autery
@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX Sent: Saturday, October 21, 2017 11:32 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: LED Light Bulbs Makes me wonder if at all or how frequently production lots are evaluated to determine if they ar

Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Jim Brown
On 10/23/2017 9:35 PM, Dave Cole (NK7Z) wrote: Currently Dollar Tree has a set of 60W sunbeam LED lights on sale for a buck each, and they are dead quiet.  I bought 20 of them today, and swapped out every light in the house.  Lost about half an S unit of noise. Thanks for the "heads up,"

Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Dave Cole (NK7Z)
efore committing to them and they were fine. _ 73, Jim - N4ST -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX Sent: Saturday, October 21, 2017 11:32 To: elecraft@mailman.qth.net Subject: Re: [E

Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Dave Cole (NK7Z)
h.net] On Behalf Of Bob McGraw K4TAX Sent: Saturday, October 21, 2017 11:32 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: LED Light Bulbs Makes me wonder if at all or how frequently production lots are evaluated to determine if they are in FCC Part 15 compliance. Otherwise, the approach &

Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Kevin Stover, AC0H
Bob McGraw K4TAX Sent: Saturday, October 21, 2017 11:32 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: LED Light Bulbs Makes me wonder if at all or how frequently production lots are evaluated to determine if they are in FCC Part 15 compliance. Otherwise, the approach "we evaluat

Re: [Elecraft] OT: LED Light Bulbs

2017-10-22 Thread Phil Kane
On 10/21/2017 1:45 PM, Gary Smith wrote: > Something to consider is what noise is coming in on the cable after > you pull the breaker on the house. I did that and found the AM > portable went nuts next to the breaker box. Found the noise is coming > in off of the cable lines. Zero luck with the

Re: [Elecraft] OT: LED Light Bulbs

2017-10-22 Thread K9MA
On 10/22/2017 13:31, Phil Kane wrote: The volume of electronic devices shipped from overseas has so overwhelmed both the FCC and the US Customs that they have stopped requiring and processing the former Declaration of Conformity (FCC Form 740) for importation. That explains much. 73, Scott

Re: [Elecraft] OT: LED Light Bulbs

2017-10-22 Thread Phil Kane
On 10/21/2017 1:28 PM, Kevin Cozens wrote: > The FCC (or was it ARRL) is doing a study/survey about the increasing > noise floor in the RF spectrum. It no longer surprises me that the floor > is rising when the US approval process is so lax. It started going downhill when the FCC in its infinite

Re: [Elecraft] OT: LED Light Bulbs

2017-10-22 Thread Phil Kane
On 10/21/2017 8:32 AM, Bob McGraw K4TAX wrote: > Guess I need to power the radio from the tractor battery and dump the > main breaker in the house to see how much the noise changes. That's always the first step in chasing RFI. If that does it, then trip each individual breaker one at a time and

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Jim Brown
A year or two ago, W3LPL taught us that this is the result of passive intermod generated either by the diodes or the SMPS or both. We see this in our CW contesting trailer, where CW operating frequencies on 80, 40, and 20 are harmonically related. We run K3, P3, KPA500, KAT500 to individual

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Dave Cole (NK7Z)
Hello Jim, Something that might help you in your RFI fight is being able to accurately define your RFI environment. See: http://nk7z.net/sdr-rfi-survey-p1/ for a brief write up on how to use an SDRPlay RSP-1 to look at your entire RFI environment, shown as a spectrogram, of frequency vs

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Gary Smith
Something to consider is what noise is coming in on the cable after you pull the breaker on the house. I did that and found the AM portable went nuts next to the breaker box. Found the noise is coming in off of the cable lines. Zero luck with the cable company... Just sayin' 73, Gary KA1J

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Bob McGraw K4TAX
As I understand a company can perform self certification. There seems to be no independent audit system. Thus if the company says it meets specs, then it meets specs. Bob, K4TAX Sent from my iPhone > On Oct 21, 2017, at 3:28 PM, Kevin Cozens wrote: > >> On 2017-10-21

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Kevin Cozens
On 2017-10-21 10:48 AM, w4sc wrote: LED bulbs are required to meet FCC Part 15 FCC, Class B regulations. I found out first hand a number of years ago that a device that has type approval in the US can still spew a lot of unwanted RF. Better to have some approval process but it would be

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Bob McGraw K4TAX
craft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX > Sent: Saturday, October 21, 2017 11:32 > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] OT: LED Light Bulbs > > Makes me wonder if at all or how frequently production lots are evaluated to > determine

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Jim - N4ST
_ 73, Jim - N4ST -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX Sent: Saturday, October 21, 2017 11:32 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: LED Light Bulbs Makes me wonder if at all or how

Re: [Elecraft] OT: LED Light Bulbs

2017-10-21 Thread Bob McGraw K4TAX
Makes me wonder if at all or how frequently production lots are evaluated to determine if they are in FCC Part 15 compliance. Otherwise, the approach "we evaluated one production lot, deemed it passed" {a.k.a - I saw it work once, ship it}  and then produced a million or so afterwards

Re: [Elecraft] OT: LED Light Bulbs

2017-10-04 Thread Lynn W. Taylor, WB6UUT
I didn't post this because I hoped it'd help everyone with their Garage Door Openers. I posted it because *if* the Genie Bulbs are low-RFI across the whole spectrum, that might be useful for other reasons. 73 -- Lynn -Original Message- From: Lynn W. Taylor, WB6UUT

Re: [Elecraft] OT: LED Light Bulbs

2017-10-04 Thread Terry Schieler
Apparently correct, Lynn. I had my garage door serviced two weeks ago and the last thing the repairman did was pop open the frosted plastic bulb cover on the opener and say "just making sure you don't have LED bulbs in here. They play havoc with the receiver on the openers). He said most

Re: [Elecraft] OT: LED Light Bulbs

2017-10-02 Thread Chip Stratton
How ironic. My two Genie garage door openers sit there and generate a huge amount of buzz-saw hash on HF as long as they have power. I have to essentially unplug them to use the radio, and my horizontal loop is 100 feet away from them. Chip AE5KA On Sun, Oct 1, 2017 at 5:30 PM, Lynn W. Taylor,

Re: [Elecraft] OT: LED Light Bulbs

2017-10-02 Thread Chip Stratton
On Sun, Oct 1, 2017 at 5:30 PM, Lynn W. Taylor, WB6UUT < kx...@coldrockshotbrooms.com> wrote: > Just saw an ad for Genie LED Bulbs. > > Apparently some LED light bulbs make enough noise that they desense the > garage door receiver. > > These bulbs are specifically low-RFI. > > I have no more