Re: LED Light QRM to TV reception
Jerry,
Have you isolated your RFI to the coach inverter? 73,
Gary/w0gx
On Tue, Jul 31, 2018, 9:01 AM Jerry Crawford via Groups.Io <K7UPJ= [email protected]> wrote: Steve,? Do you want to do a test with my new ANC-4 noise canceller?
I have lots of ferrites without much help.? Jerry On Jul 30, 2018, at 10:58 AM, Kevan Nason < knason00@...> wrote: Hi Steve. Hope you've been enjoying that camper this year.
Didn't answer right away because I've avoided LED lights to avoid RFI so don't have practical experience. Thought maybe someone else would speak up. But I've been reading whenever I run across talk about RFI and LED lights because I know I'll eventually to have to deal with it.
This web page seemed to sum up things I've read pretty well:
Interference seems to mainly come from the power supply. Power supplies for dimmable LED lights have been a particular issue. Ferrite is suggested on each side of the supply. Hams have said they have had good luck using 31 mix ferrite cores.?Another suggestion from some has been to replace the power supply and go?from a PWM to a linear type if you can. I haven't done any research on how to do that. I did note in passing that the above link talks about Phillips having a replacement "transformer" that might work if you want to explore that.
Hams have been sharing info on what bulb manufacturers have had low and high interference for a couple/few years. Maybe spend some internet time seeking out those reports and see if you can substitute some good ones for what you have. I've seen that type of discussion on several web sites.
As to FCC approval, there has been some talk about people getting approval and then downgrading the supply without getting re-certification. A board having good EMI protection is approved and then once it hits production the EMI suppressing components aren't installed. The holes are still there in the circuit board for the parts -- just that in order to save money for the manufacturer only those parts needed to make the lights turn on are installed. The EMI stuff isn't needed for that so they leave them out. There has been documentation of that actually happening. So far the FCC hasn't been pushing very hard for the manufacturers to do the right thing.
Kevan N4XL
|
Re: LED Light QRM to TV reception
Steve,? Do you want to do a test with my new ANC-4 noise canceller?
I have lots of ferrites without much help.? Jerry
toggle quoted message
Show quoted text
On Jul 30, 2018, at 10:58 AM, Kevan Nason < knason00@...> wrote: Hi Steve. Hope you've been enjoying that camper this year.
Didn't answer right away because I've avoided LED lights to avoid RFI so don't have practical experience. Thought maybe someone else would speak up. But I've been reading whenever I run across talk about RFI and LED lights because I know I'll eventually to have to deal with it.
This web page seemed to sum up things I've read pretty well:
Interference seems to mainly come from the power supply. Power supplies for dimmable LED lights have been a particular issue. Ferrite is suggested on each side of the supply. Hams have said they have had good luck using 31 mix ferrite cores.?Another suggestion from some has been to replace the power supply and go?from a PWM to a linear type if you can. I haven't done any research on how to do that. I did note in passing that the above link talks about Phillips having a replacement "transformer" that might work if you want to explore that.
Hams have been sharing info on what bulb manufacturers have had low and high interference for a couple/few years. Maybe spend some internet time seeking out those reports and see if you can substitute some good ones for what you have. I've seen that type of discussion on several web sites.
As to FCC approval, there has been some talk about people getting approval and then downgrading the supply without getting re-certification. A board having good EMI protection is approved and then once it hits production the EMI suppressing components aren't installed. The holes are still there in the circuit board for the parts -- just that in order to save money for the manufacturer only those parts needed to make the lights turn on are installed. The EMI stuff isn't needed for that so they leave them out. There has been documentation of that actually happening. So far the FCC hasn't been pushing very hard for the manufacturers to do the right thing.
Kevan N4XL
|
Re: LED Light QRM to TV reception
Hi Steve. Hope you've been enjoying that camper this year.
Didn't answer right away because I've avoided LED lights to avoid RFI so don't have practical experience. Thought maybe someone else would speak up. But I've been reading whenever I run across talk about RFI and LED lights because I know I'll eventually to have to deal with it.
This web page seemed to sum up things I've read pretty well:
Interference seems to mainly come from the power supply. Power supplies for dimmable LED lights have been a particular issue. Ferrite is suggested on each side of the supply. Hams have said they have had good luck using 31 mix ferrite cores.?Another suggestion from some has been to replace the power supply and go?from a PWM to a linear type if you can. I haven't done any research on how to do that. I did note in passing that the above link talks about Phillips having a replacement "transformer" that might work if you want to explore that.
Hams have been sharing info on what bulb manufacturers have had low and high interference for a couple/few years. Maybe spend some internet time seeking out those reports and see if you can substitute some good ones for what you have. I've seen that type of discussion on several web sites.
As to FCC approval, there has been some talk about people getting approval and then downgrading the supply without getting re-certification. A board having good EMI protection is approved and then once it hits production the EMI suppressing components aren't installed. The holes are still there in the circuit board for the parts -- just that in order to save money for the manufacturer only those parts needed to make the lights turn on are installed. The EMI stuff isn't needed for that so they leave them out. There has been documentation of that actually happening. So far the FCC hasn't been pushing very hard for the manufacturers to do the right thing.
Kevan N4XL
On Sun, Jul 29, 2018 at 7:14 PM, W8SC <w8sc@...> wrote: When I switched to LED lamps in my motorhome, and then in my home kitchen undercounter lighting, I am experiencing the same problem: Switching on CERTAIN (not all) of the LED fixtures wipes out TV reception on SOME channels. Turning the offending LED lamp off, and the channel reception comes back.? Yes, the LED fixtures have the required FCC certification (so much for that, huh?). Has anyone had experience with using ferrite beads to help with this problem, and if so, which beads, and where did you place them? Thanks for reading, Steve W8SC w8sc@... ?
|
LED Light QRM to TV reception
When I switched to LED lamps in my motorhome, and then in my home kitchen undercounter lighting, I am experiencing the same problem: Switching on CERTAIN (not all) of the LED fixtures wipes out TV reception on SOME channels. Turning the offending LED lamp off, and the channel reception comes back.? Yes, the LED fixtures have the required FCC certification (so much for that, huh?). Has anyone had experience with using ferrite beads to help with this problem, and if so, which beads, and where did you place them? Thanks for reading, Steve W8SC w8sc@... ?
|
Change in Test Location for AIKEN VEC supported by NABRC
It¡¯s a new church on the north side of town on highway 1 next to the campground (across from where the new north side park is being built) . The address is Aiken SDA Church, 1714 Columbia Hwy N. 29801. ?Next testing session is July 12, 2018. The Technician test has been updated with over 60 new questions to the pool. ?Kent KQ4KK
|
Re: Steve Peterson WD4PLF SK
So very sad to hear this, John. We'll keep his family and friends
in our thoughts and prayers.
73,
Gregory Godsey, K5CVD
* 2015-2019 President
* ARRL Volunteer Examiner
* SCHeart Member
Follow us on Twitter at .
On 07/04/2018 10:01 AM, John Cox wrote:
toggle quoted message
Show quoted text
I reading today's Aiken Standard, I'm sad to
report that Steve Peterson, WD4PLF passed away on July 2.?
Though not very active hamwise in recent years, Steve
coordinated NABRC's public service event support for MANY
years.? It would be interesting to know just how many
running races we covered under Steve's coordination.? He
also ran sound and did recordings of many local events,
especially the Heart Fund shows.
Rest in Peace, friend
John C. Cox, K4JCC
No
trees were killed in the sending
of this message, however,
a large?number of electrons were
terribly
inconvenienced!
|
July 2018 NABRC Monthly Newsletter
#email
|
|
|
|
|
July Meeting
|
WHEN: Monday, July 9, 2018
|
6:30 PM - Fellowship
7:00 PM - Meeting
WHERE: North Augusta Public Service Station #2
|
Five Notch Road
North Augusta, SC
|
TALK-IN: 145.350 Mhz (-) (PL tone: 156.7)
|
Please note: I am asking that we wait until the August Meeting to talk about this year's Field Day. Please refrain from discussing Field Day at this meeting. Thank you!
|
|
Program: Swapfest! For this meeting we will hold our first annual swapfest. Bring your excess "stuff" to sell or trade, and bring money to buy some more "stuff". You can't have too much stuff!!!
|
And I'm sure there will be bargains there.
|
|
|
|
Upcoming Events
July 12, 2018 - 7:00 PM - VE Testing Session at Aiken SDA Church at 1714 Columbia Hwy N in Aiken SC.
|
July 16, 2018 - 6:00 PM - Aiken County ARES at Aiken Regional Medical Center in the Cafeteria.
|
August 13, 2018 - 6:30 PM Fellowship, 7:00 PM Meeting - North Augusta Belvedere Radio Club Monthly Meeting at Aiken Regional Medical Center on the 6th Floor in Classroom A & B.
|
|
October 6, 2018 - 10 AM to 3 PM - Science Education Enrichment Day at USC Aiken. If you have not signed up to help, please see Kent, KQ4KK (kq4kk@...) to do so. You get a great shirt and boxed lunch for participating. Over 4,000 kids and parents come by and learn a little about Amateur Radio. This is a great chance to spread the word about our hobby and to demonstrate our craft.
|
|
|
|
Competitive Contesting Class
The Swamp Fox Contest Group (SFCG) and South Carolina DX Association (SCDXA) are sponsoring a Competitive Contesting class Saturday August 18th in Gray Court, South Carolina. Its goal is simple. To help those already familiar with contesting improve their scores. To achieve that goal operating techniques, station design choices, and contest radio characteristics will be presented.
|
This is not a beginner¡¯s class. People choosing to attend should have previously participated in contests or serious Field Day efforts. They will already be familiar with how a contest style contact is conducted and now want to figure out what they can do differently to help achieve competitive state, regional, and national scores. Skills discussed can be used for Field Day but will be focused on participating in contests happening throughout the year. Heavy emphasis is placed on HF SSB operations, however much of the information to be presented is common to all types and modes of contesting.
|
Kevan Nason, N4XL, will present topics which include methods to make contacts flow more efficiently, breaking through pile ups, HFTA and take off angles, improving your Search and Pounce technique, tips on Running stations, using N1MM+ contest logger tools to increase contact rate per hour, and internet sources to help with your self-improvement efforts. Most importantly, for those of you not yet in the know the ¡°Big Secret¡± used by all the highest scoring contesters will be revealed! It is virtually impossible to be a top contester without incorporating this critical knowledge into your personal operating style.
|
SCDXA member K9JDP is graciously opening his large shack for the class. It¡¯s located in Laurens County at . Kickoff is at 8:30 AM. We'll discuss contesting for about 5 hours. There will be an additional 60-minute break in the middle for lunch meaning we should be done by 3:00. "GT¡¯s Quick Stop" is just a few minutes away. They serve pizza, hamburgers, hot dogs, wings, BLT's and BBQ sandwiches. If you would rather bring your own meal Jim has a full kitchen in the shack with a stove, refrigerator and microwave. Bottled water will be available.
|
It is recognized that a class on August 18th will conflict with the NAQP SSB contest which many like to participate in. After looking at facility scheduling requirements and other conflicts this proved to be the best date.
|
Seating is limited to 25 people. Contact Kevan Nason, N4XL, for registration or additional information. The class was first presented last spring and was well received. Attendees gave many positive comments. There are currently no plans for a third, so if interested you are encouraged to register now rather than waiting.
|
|
|
|
Assigning Kosovo Z6 Call Signs "Unauthorized and Illegal," ITU Secretary-General Says
|
Kosovo, which won its battle to become a DXCC entity earlier this year, appears to have another fight on its hands. International Telecommunication Union () Secretary-General Houlin Zhao has determined that the Z6 call sign prefix was never allocated to Kosovo. The Secretary-General issued his finding in the wake of a March 16 inquiry from Serbia, from which Kosovo declared independence 10 years ago, the last piece of the former Yugoslavia to do so. Serbia has continued to reject Kosovo's secession.
|
"ITU has not allocated call sign series Z6 to any of its member states," Houlin Zhou said. "Consequently, the utilization of call signs series Z6 by any entity without a formal allocation and consent of the ITU represents an unauthorized and illegal usage of this international numbering resource."
|
The Secretary-General's statement was reported in No. 1149. He cited Article 19 of the Radio Regulations, which states that the management of international series of call signs is an ITU prerogative. "Call sign series can be allocated only to the administrations of the ITU member states by World Radiocommunication Conferences or, between conferences, by the ITU Secretary-General," asserted Houlin Zhou.
|
Kosovo is not an ITU member state and is therefore not eligible to receive a call sign block allocation from the ITU.
|
Houlin Zhou also informed the International Amateur Radio Union (IARU) that the ITU did not authorize use of the Z6 prefix and asked the IARU not to include Z6-prefix call signs on its website, where they have appeared since the 2015 admission of Shoqata e Radio Amatoreve te Kosoves (SHRAK) as an IARU member-society. As a sector member of the ITU, the IARU complied with the request and advised SHRAK.
|
Kosovo joins a short list of where radio amateurs use "unofficial" call sign prefixes. The list also includes Western Sahara (S0) and the Sovereign Military Order of Malta (1A). Read .
|
|
From the ARRL Letter for June 21, 2018.
|
|
|
|
Submissions
If you have anything you would like included in the newsletter, please email club@... with your submission. It can be an article about something Amateur Radio related or an upcoming Amateur Radio event.
|
Also, visit us on the web and on social media by clicking the images below:
|
|
|
|
|
|
|
|
|
|
|
|
I reading today's Aiken Standard, I'm sad to report that Steve Peterson, WD4PLF passed away on July 2.? Though not very active hamwise in recent years, Steve coordinated NABRC's public service event support for MANY years.? It would be interesting to know just how many running races we covered under Steve's coordination.? He also ran sound and did recordings of many local events, especially the Heart Fund shows.
Rest in Peace, friend John C. Cox, K4JCC
No trees were killed in the sending of this message, however, a large?number of electrons were terribly
inconvenienced!
|
SC Rogue station operator nabbed
? From SCHEART.US web site- Over the past few weeks, the SCHEART network along with other amateur repeaters in the state have experienced frequent malicious interference from a rogue station. ? This has resulted in adverse impacts to the weekly training nets and periods where authorized communications on the repeaters were interrupted by control operators attempting to restrict the rogue station¡¯s range. In the background, amateurs along with State and Federal agencies have been working to isolate the transmission source and identify the individual involved.? Late last night the task force was successful. The suspect is not a licensed amateur operator.? However, he surrendered amateur radio equipment when confronted by law enforcement.? Due to further pending action, more information is not available at this time. On behalf of SCHEART, we¡¯d like to thank all the hams who participated in the effort to identify the rogue station and to all South Carolina Amateurs who acted professionally over the air when confronted by this operator. ? Kent KQ4KK ? ?
|
In case you missed the excitement at K4NAB Field Day cw site
Sorry for the lopsided picture. I was not able to fix it.
?A very strong thunderstorm gust of wind did this on Saturday afternoon.? It took our two canopies (Dave, WB5NHL and mine) and blew them onto the roof of the CW trailer and trashed them.? We even had 20 lb weights on all of the legs and they were bungeed to the trailer!!!? The weights ended up on the roof. Fortunately no one was hurt.? Bob WA2AXD, was sitting under them when it happened. Scary stuff!!? de carl KP2L
|
By
#ARRLFD is coming together!
|
Competitive Contesting Class - August
Competitive Contesting Class
?
The Swamp Fox Contest Group (SFCG) and South Carolina DX Association (SCDXA) are sponsoring a Competitive Contesting class Saturday August 18th?in Gray Court, South Carolina. Its goal is simple. To help those already familiar
with contesting improve their scores. To achieve that goal operating techniques, station design choices, and contest radio characteristics will be presented.
?
This is not a beginner¡¯s class. People choosing to attend should have previously participated in contests or serious Field Day efforts. They will already be familiar with how a contest style contact is conducted and now want to figure
out what they can do differently to help achieve competitive state, regional, and national scores. Skills discussed can be used for Field Day but will be focused on participating in contests happening throughout the year. Heavy emphasis is placed on HF SSB
operations, however much of the information to be presented is common to all types and modes of contesting.
?
Kevan Nason, N4XL, will present topics which include methods to make contacts flow more efficiently, breaking through pile ups, HFTA and take off angles, improving your Search and Pounce technique, tips on Running stations, using
N1MM+ contest logger tools to increase contact rate per hour, and internet sources to help with your self-improvement efforts. Most importantly, for those of you not yet in the know the ¡°Big Secret¡± used by all the highest scoring contesters will be revealed!
It is virtually impossible to be a top contester without incorporating this critical knowledge into your personal operating style.
?
SCDXA member K9JDP is graciously opening his large shack for the class. It¡¯s located in Laurens County at?. Kickoff is at 8:30 AM. We'll discuss contesting for about 5 hours. There will be an additional 60-minute break in the middle for lunch meaning we should be done by 3:00. "GT¡¯s Quick Stop" is just a
few minutes away. They serve pizza, hamburgers, hot dogs, wings, BLT's and BBQ sandwiches. If you would rather bring your own meal Jim has a full kitchen in the shack with a stove, refrigerator and microwave. Bottled water will be available.
?
It is recognized that a class on August 18th will conflict with the NAQP SSB contest which many like to participate in. After looking at facility scheduling requirements and other conflicts this proved to be the best date.
?
Seating is limited to 25 people. Contact Kevan Nason, N4XL, for registration or additional information. The class was first presented last spring and was well received. Attendees gave many positive comments. There are currently no
plans for a third, so if interested you are encouraged to register now rather than waiting.
?
Kevan Nason,?knason00@...
SFCG,?
SCDXA?
|
NABRC - North Augusta Belvedere Radio Club shared Aiken County Emergency Management Division's post.
#facebook
By
The NABRC and Aiken County ARES will be there!
|
|
|
By
The time has come for the Annual Nationwide ARRL Field Day! This year's Field Day will be held on June 23 starting at 2:00 PM and ending on June 24 at 2:00 PM. It will be located at the Aiken County Government Complex located at 1930 University Pkwy in Aiken, SC.
We need your help! Whether it is setting up and tearing down, operating, logging, site tour guide, or other Public Relations work, we need you to help. There are plenty of opportunities to assist during Field Day.
You can sign up to operate at or by contacting Kevin Kingery at kevink92057@....
Don't forget that we will have Low Country Boil on Saturday evening for those that come and help at Field Day.
We hope to see you all there!
|
|
|
|
North Augusta Belvedere Radio Club Field Day!
The time has come for the Annual Nationwide ARRL Field Day! This year's Field Day will be held on June 23 starting at 2:00 PM and ending on June 24 at 2:00 PM. It will be located at the Aiken County Government Complex located at 1930 University Pkwy in Aiken, SC.
|
We need your help! Whether it is setting up and tearing down, operating, logging, site tour guide, or other Public Relations work, we need you to help. There are plenty of opportunities to assist during Field Day.
|
You can sign up to operate at or by contacting Kevin Kingery at .
|
|
Don't forget that we will have Low Country Boil on Saturday evening for those that come and help at Field Day.
|
We hope to see you all there!
|
|
|
|
|
|
|
|
By
NABRC is proud to sponsor the @NorthAugustaHS Amateur Radio Club! Meeting today at 3:45 PM in the Auditorium.
|
By
Next North Augusta High School Amateur Radio Club meeting will be held on November 15 at 3:45 PM in the Auditorium. We will begin looking at what it takes to get your License and have some time to talk on the radio!
|
NABRC - North Augusta Belvedere Radio Club shared their live video.
#facebook
|
|
|
John Cox, K4JCC