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1. [RFI] LED streetlights - Lumenistics (score: 1): Author: Alan Higbie <alan.higbie@gmail.com>; Date: Tue, 3 Mar 2020 11:41:09 -0700; Our city (Colorado Springs) is installing LED street lights with some new type of controllers. I am not sure, but I believe these are made by a company named Lumenistic (of Boulder, Colorado). Here i; /archives//html/RFI/2020-03/msg00000.html (7,138 bytes)
2. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 3 Mar 2020 10:54:26 -0800; More likely the power supplies. I'll probably take my Tecsun PL 660 over to where they have installed some of the new lights and take a listen. Great. Let us know what you learn. Also, take note of i; /archives//html/RFI/2020-03/msg00001.html (7,509 bytes)
3. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Dale Johnson <dj2001x@comcast.net>; Date: Wed, 4 Mar 2020 05:51:50 -0600; The entire city of Bloomington, Minnesota has LED street lights. There is one less than a half block from my house. The Mall of America is six miles East of me and the entire parking ramp is LED ligh; /archives//html/RFI/2020-03/msg00006.html (8,615 bytes)
4. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Dave Cole <dave@nk7z.net>; Date: Wed, 4 Mar 2020 05:29:34 -0800; I was able to work with our City engineer prior to LED streetlights being deployed... Myself and another Amateur tested by sitting under each of the the test lights, and found nothing on any brand. W; /archives//html/RFI/2020-03/msg00007.html (9,897 bytes)
5. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: KD7JYK DM09 <kd7jyk@earthlink.net>; Date: Wed, 4 Mar 2020 07:20:08 -0800; "This was several years ago, the city has converted fully to LED, and no issues so far..." I only noted an issue once, about twelve years ago. An LED streetlight had failed, and was turning on/off ab; /archives//html/RFI/2020-03/msg00009.html (8,090 bytes)
6. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Dave Cole <dave@nk7z.net>; Date: Wed, 4 Mar 2020 08:20:08 -0800; That answers why they are quiet... Hopefully all are built to teh same standards. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist ARRL Asst. Directo; /archives//html/RFI/2020-03/msg00010.html (8,309 bytes)
7. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: <w2ay@atmc.net>; Date: Wed, 4 Mar 2020 13:00:09 -0500; Is there a problem with snow build-up on the new LED lights. ? I ask because , I assume there is no heat to melt any build up of snow. . Before the change to LED lights, did snow block the lights ? B; /archives//html/RFI/2020-03/msg00015.html (10,355 bytes)
8. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: "David Robbins" <k1ttt.dave@gmail.com>; Date: Wed, 04 Mar 2020 13:19:53 -0500; No, and there are advertisements that show that led lamps still melt snow! David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: telnet://k1ttt.net:7373 --Orig; /archives//html/RFI/2020-03/msg00016.html (11,555 bytes)
9. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Ken Winterling <wa2lbi@gmail.com>; Date: Wed, 4 Mar 2020 13:31:08 -0500; I remember years ago when municipalities replaced incandescent traffic lights with LED lights to save money. They discovered that in winter the snow would cover and block the lights since they didnt; /archives//html/RFI/2020-03/msg00017.html (13,128 bytes)
10. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Gary K9GS <k9gs@gjschwartz.com>; Date: Wed, 04 Mar 2020 12:27:47 -0600; Snow is not an issue with LED streetlights since they do dissipate quite a bit of heat as David pointed out.Snow, however, is an issue with LED traffic signals. Streetlights stay on for hours, plenty; /archives//html/RFI/2020-03/msg00018.html (12,156 bytes)
11. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>; Date: Wed, 4 Mar 2020 19:25:28 +0000; --Original Message-- From: RFI On Behalf Of Gary K9GS Snow is not an issue with LED streetlights since they do dissipate quite a bit of heat as David pointed out. Snow, however, is an issue with LED; /archives//html/RFI/2020-03/msg00020.html (9,291 bytes)
12. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: KD7JYK DM09 <kd7jyk@earthlink.net>; Date: Wed, 4 Mar 2020 15:19:56 -0800; "I remember years ago when municipalities replaced incandescent traffic lights with LED lights to save money. They discovered that in winter the snow would cover and block the lights since they didnt; /archives//html/RFI/2020-03/msg00021.html (8,904 bytes)
13. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Ken Winterling <wa2lbi@gmail.com>; Date: Wed, 4 Mar 2020 19:17:59 -0500; I believe you can thank lead-free solder for many failed joints. It needs higher heat to melt than the leaded type. Ive been working on equipment for over fifty years and see more PCB solder joint fa; /archives//html/RFI/2020-03/msg00022.html (9,763 bytes)
14. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Gary K9GS <k9gs@gjschwartz.com>; Date: Wed, 04 Mar 2020 19:03:00 -0600; I work in electronics manufacturing. Lead free solder for surface mount devices has been commonplace for more than 20 years.It's stable and proven technology. Higher solder temperatures are correct b; /archives//html/RFI/2020-03/msg00023.html (10,009 bytes)
15. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: nm8rmedic via RFI <rfi@contesting.com>; Date: Wed, 04 Mar 2020 21:09:52 -0500; The problem with ROHS is it seems to be one factor that fosters growth of tin whiskers and dendrites. Lead in solder prevented that. NASA produced a good resource paper on the subject titled Basic; /archives//html/RFI/2020-03/msg00024.html (11,236 bytes)
16. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 4 Mar 2020 18:09:55 -0800; On 3/4/2020 5:03 PM, Gary K9GS wrote: I work in electronics manufacturing. Lead free solder for surface mount devices has been commonplace for more than 20 years.It's stable and proven technology. Hi; /archives//html/RFI/2020-03/msg00025.html (8,786 bytes)
17. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Wed, 4 Mar 2020 20:57:35 -0600; My city is in the process of converting over to LED street lamps from the gas/vapor lamps that require h.v. to fire. These lamps are a nuisance because when they start to fail, they cycle off and re-; /archives//html/RFI/2020-03/msg00026.html (8,693 bytes)
18. Re: [RFI] LED streetlights - Lumenistics (score: 1): Author: Gary K9GS <k9gs@gjschwartz.com>; Date: Thu, 05 Mar 2020 09:10:08 -0600; FYI...Luministics is not a lighting manufacturer. They are a consulting company that works with their clients to transition from conventional lighting to LED lighting.They file the paperwork, design; /archives//html/RFI/2020-03/msg00027.html (9,437 bytes)

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