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Old 12-12-2013, 17:07   #46
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Re: LED Noise?

Frz, the "stars" argument has been made often enough elsewhere. Obviously the USCG and other regulatory bodies don't share your opinion about that.
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Old 12-12-2013, 17:16   #47
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Frz, the "stars" argument has been made often enough elsewhere. Obviously the USCG and other regulatory bodies don't share your opinion about that.
There's no requirement for an anchor light to be that high up. Nor the VHF antenna

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Old 12-12-2013, 17:19   #48
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Re: LED Noise?

An anchor light does not need to be located at the mast head. And I have experienced almost running into a boat where the masthead light was masked by the stars and the hull was nearly invisible until we were very close to the boat.
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Old 12-12-2013, 17:20   #49
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Re: LED Noise?

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An anchor light does not need to be located at the mast head.
So can a steaming light act as an anchor light?
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Old 12-12-2013, 17:21   #50
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So can a steaming light act as an anchor light?
I just has to be an all round light. Doesn't mean the mast can't obscure it slightly
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Old 12-12-2013, 17:25   #51
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Re: LED Noise?

Dave, unless your anchor light is WIDER than your mast, the mast will fully obscure it from some small angle of view, especially if you have a stout mast and one of the new slim anchor lights. So technically? Yes, the anchor light might very well have to be clear above the mast, unless you've got a fat anchor light. One point in favor of old kerosene lanterns.

"Its just a little obstruction" still counts as an obstruction.

Although I like the way the fishing fleets work. Nothing like a couple of huge "orange" sodium lights in the middle of nowhere to tip you off that there's a boat out there.
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Old 12-12-2013, 17:42   #52
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Re: LED Noise?

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There's no requirement for an anchor light to be that high up. Nor the VHF antenna

Dave
There is no legal requirement for an antenna to be up that high that I know of...
but I think that there is a practical requirement.
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Old 12-12-2013, 17:47   #53
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There is no legal requirement for an antenna to be up that high that I know of...
but I think that there is a practical requirement.
An antenna at spreader height would perform almost the same

Dave
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Old 12-12-2013, 17:48   #54
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Re: LED Noise?

Two lights, one on either side of the mast, at 1 meter distance from each other or less will show up as a single all around light for all intents and purposes.
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Old 12-12-2013, 17:50   #55
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Re: LED Noise?

Jim, I look at this as a marketing opportunity.

Just got back from the patent office, where I filed for exclusive rights on a donut-shaped anchor light, designed to fit over your masthead VHF antenna so it take less real estate and can't be obstructed.

Comes in honey-maple and jelly-filled flavors, too. <WEG>
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Old 12-12-2013, 17:51   #56
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Two lights, one on either side of the mast, at 1 meter distance from each other or less will show up as a single all around light for all intents and purposes.
Simply hoisting an all round light upto the rigging a bit , as was done with oil lamps , is sufficient

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Old 12-12-2013, 17:51   #57
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Re: LED Noise?

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Jim-
Part15 can be a long-winded document but even in the case of regulated equipment (like a home router) if you complain to the FCC that it generates RFI, they'll tell you that's your problem, shut if off when there are complaints. And the maker doesn't have to do a thing. (BTDT, got the t-shirt.)

If an anchor light is regulated, if someone filed a complaint, I'd expect to find a similar barn-door-sized-loophole that came back to "so shut your anchor light".

An imperfect world, yes.
Yes, the world is imperfect, especially where bureaucracy is involved.

Some typical labeling text for part 15 compliance would be as follows:

"This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference."

At least that is the case according to the first web site that I punched up on the subject, which can be found here: https://apps.fcc.gov/oetcf/kdb/forms...27980&switch=P

Some other related references:
FCC Testing - FCC Certification Testing - FCC Compliance Testing | F2 Labs

FCC Certification Testing - FCC Rule Parts

Please interpret as you you see fit.

Regards,
Jim
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Old 12-12-2013, 17:54   #58
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Re: LED Noise?

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An antenna at spreader height would perform almost the same

Dave
I agree that would be a workable height.

Do you have a suggestion for a workable mounting bracket that would be likely to hold up well under typical sailing conditions?
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Old 12-12-2013, 17:55   #59
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Re: LED Noise?

Quote:
Originally Posted by hellosailor View Post
Jim, I look at this as a marketing opportunity.

Just got back from the patent office, where I filed for exclusive rights on a donut-shaped anchor light, designed to fit over your masthead VHF antenna so it take less real estate and can't be obstructed.

Comes in honey-maple and jelly-filled flavors, too. <WEG>
I like it.
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Old 12-12-2013, 17:56   #60
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I agree that would be a workable height.

Do you have a suggestion for a workable mounting bracket that would be likely to hold up well under typical sailing conditions?
I think dockhead has mounted antennas on his spreaders

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