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Mauledriver(at)nc.rr.com
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 Posted: Fri Sep 09, 2011 5:09 pm Post subject: RF noise from Jeff's LED lights |
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I am getting a loud hiss on both aircraft radios whenever my LED
position lights are turned on. In fact, any FM radio in the vicinity
gets the hiss too.
I have "Jeff's LED lights for RVs" installed in the wing tips along
with Bob Archer antennas. Though it may be worth noting that the SL30
Comm antenna is a standard belly mounted bent whip.
I know the RF is coming from the radios because if I turn the volume
down on the radios, the noise disappears (in other words, the intercom
is not affected).
The archives have some discussion of filters, resistors and capacitors
but I'm not sure where to start.
My first inclination is to disconnect one at a time to see if the noise
is coming from both lights. Then I don't know where to start.
Please help.
Bill "falling in love with his first George" Watson
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Sun Sep 11, 2011 8:04 am Post subject: RF noise from Jeff's LED lights |
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At 08:05 PM 9/9/2011, you wrote:
| Quote: |
I am getting a loud hiss on both aircraft radios whenever my LED
position lights are turned on. In fact, any FM radio in the
vicinity gets the hiss too.
I have "Jeff's LED lights for RVs" installed in the wing tips along
with Bob Archer antennas. Though it may be worth noting that the
SL30 Comm antenna is a standard belly mounted bent whip.
I know the RF is coming from the radios because if I turn the volume
down on the radios, the noise disappears (in other words, the
intercom is not affected).
The archives have some discussion of filters, resistors and
capacitors but I'm not sure where to start.
My first inclination is to disconnect one at a time to see if the
noise is coming from both lights. Then I don't know where to start.
|
Some years ago, folks were building their own
nav lights that utilized a "Buck Puck" constant
current driver. They were experiencing similar
noise problems. I proposed and fabricated a
filtered version of the Buck Puck
http://www.aeroelectric.com/Catalog/AEC/9051/
We also offered a filter-board that builders
could use to quiet Buck Pucks they already owned.
The instructions above describe a line noise filter
that proved useful on the Buck Puck. If your
fixtures use the same power supply then values
for a filter are given in the document. You might
be able to use one of our filter boards . . . or
substitute a fully assembled power supply.
Bob . . .
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Mauledriver(at)nc.rr.com
Guest
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| Posted: Mon Sep 12, 2011 2:11 am Post subject: RF noise from Jeff's LED lights |
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Bob, I'd like to get a couple of those if they are still available from you.
What I have is a couple of "Luxdrive 02008B-700 PowerPucks" producing
700ma. They are round rather than square as the ones in your link but
look like the same thing. they have 2 input and output leads.
If you have a couple of filter boards that I can wire them to, I'd like
to get them. Or perhaps a couple of boards with the pucks installed.
How much? How can I get them?
Thanks!
On 9/11/2011 12:01 PM, Robert L. Nuckolls, III wrote:
| Quote: |
<nuckolls.bob(at)aeroelectric.com>
At 08:05 PM 9/9/2011, you wrote:
>
> <Mauledriver(at)nc.rr.com>
>
> I am getting a loud hiss on both aircraft radios whenever my LED
> position lights are turned on. In fact, any FM radio in the vicinity
> gets the hiss too.
>
> I have "Jeff's LED lights for RVs" installed in the wing tips along
> with Bob Archer antennas. Though it may be worth noting that the
> SL30 Comm antenna is a standard belly mounted bent whip.
>
> I know the RF is coming from the radios because if I turn the volume
> down on the radios, the noise disappears (in other words, the
> intercom is not affected).
>
> The archives have some discussion of filters, resistors and
> capacitors but I'm not sure where to start.
>
> My first inclination is to disconnect one at a time to see if the
> noise is coming from both lights. Then I don't know where to start.
Some years ago, folks were building their own
nav lights that utilized a "Buck Puck" constant
current driver. They were experiencing similar
noise problems. I proposed and fabricated a
filtered version of the Buck Puck
http://www.aeroelectric.com/Catalog/AEC/9051/
We also offered a filter-board that builders
could use to quiet Buck Pucks they already owned.
The instructions above describe a line noise filter
that proved useful on the Buck Puck. If your
fixtures use the same power supply then values
for a filter are given in the document. You might
be able to use one of our filter boards . . . or
substitute a fully assembled power supply.
Bob . . .
|
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Mon Sep 12, 2011 4:26 am Post subject: RF noise from Jeff's LED lights |
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At 05:08 AM 9/12/2011, you wrote:
| Quote: |
Bob, I'd like to get a couple of those if they are still available from you.
What I have is a couple of "Luxdrive 02008B-700 PowerPucks"
producing 700ma. They are round rather than square as the ones in
your link but look like the same thing. they have 2 input and output leads.
If you have a couple of filter boards that I can wire them to, I'd
like to get them. Or perhaps a couple of boards with the pucks installed.
How much? How can I get them?
|
They're in the catalog at:
https://matronics.com/aeroelectric/Catalog/AECcatalog.html
AEC9051 at the bottom of the page
Bob . . .
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Mauledriver(at)nc.rr.com
Guest
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| Posted: Mon Sep 12, 2011 6:16 am Post subject: RF noise from Jeff's LED lights |
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Thanks, I ordered a couple.
FYI, Had a heck of a time finding your catalog page before you sent this
link. No matter how hard I hit Google or fooled around with my other AE
bookmarks, I just couldn't find it.
Bill
On 9/12/2011 8:23 AM, Robert L. Nuckolls, III wrote:
| Quote: |
<nuckolls.bob(at)aeroelectric.com>
At 05:08 AM 9/12/2011, you wrote:
>
> <Mauledriver(at)nc.rr.com>
>
> Bob, I'd like to get a couple of those if they are still available
> from you.
>
> What I have is a couple of "Luxdrive 02008B-700 PowerPucks" producing
> 700ma. They are round rather than square as the ones in your link
> but look like the same thing. they have 2 input and output leads.
>
> If you have a couple of filter boards that I can wire them to, I'd
> like to get them. Or perhaps a couple of boards with the pucks
> installed.
> How much? How can I get them?
They're in the catalog at:
https://matronics.com/aeroelectric/Catalog/AECcatalog.html
AEC9051 at the bottom of the page
Bob . . .
|
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Mon Sep 12, 2011 7:43 am Post subject: RF noise from Jeff's LED lights |
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At 09:13 AM 9/12/2011, you wrote:
| Quote: |
Thanks, I ordered a couple.
FYI, Had a heck of a time finding your catalog page before you sent
this link. No matter how hard I hit Google or fooled around with my
other AE bookmarks, I just couldn't find it.
|
Hmmm . . . one could start at the home page
http://aeroelectric.com and select the
"Catalog of Products and Services" link.
But how you get there is not so important
as getting there. I'm pleased that we can
help move your project forward.
By the way, did you see the link to the
installation manual?
http://www.aeroelectric.com/Catalog/AEC/9051/9051-700A.pdf
Check this over and make sure it looks like
a doable and useful experiment . . .
Bob . . .
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Mauledriver(at)nc.rr.com
Guest
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| Posted: Mon Sep 12, 2011 12:51 pm Post subject: RF noise from Jeff's LED lights |
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do not archive
| Quote: | > FYI, Had a heck of a time finding your catalog page before you sent
> this link. No matter how hard I hit Google or fooled around with my
> other AE bookmarks, I just couldn't find it.
Hmmm . . . one could start at the home page
http://aeroelectric.com and select the
"Catalog of Products and Services" link.
That's way to straight forward.... better to over think it
|
without the Buckpuck, thinking that the Powerpucks I have are
functionally equivalent. They are aimed at similar applications but I
noted enough differences to make that level of experimentation not worth
it right now.
I will double check the specs against what I think I have in the way of
LEDs in my current "Jeff's LED position lights" installation. I really
like the product... except for the noise.
Bill
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Mon Sep 12, 2011 3:26 pm Post subject: RF noise from Jeff's LED lights |
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| Quote: |
I will double check the specs against what I think I have in the way
of LEDs in my current "Jeff's LED position lights" installation. I
really like the product... except for the noise.
|
Good to hear. When you get your system up and
running to design goals, how about some pictures
and a narrative of your experience and findings.
We can post it to the articles section of the
website . . .
Bob . . .
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Brantel
Joined: 23 Aug 2008
Posts: 53
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| Posted: Mon Sep 12, 2011 6:13 pm Post subject: Re: RF noise from Jeff's LED lights |
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Bob's filters will work just fine with Jeff's lights.
They will completely eliminate your noise issues or at least they did on my RV.
I was the one who originally worked with Bob to help him develop them. I have been using em on my RV7 for almost 2 years now. Lots of stuff in these archives as well as over on the VAF forums about my experience with rolling my own NAV lights and the noise and these filters.
Great product and I hope Bob that you have sold enough of them to make it worth your time...
The market has been flooded with off the shelf solutions for LED Nav lights that either have passive power supplies or built in filtering on their CC drivers. I am sure this has limited the demand for folks building their own like I did.
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