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Rotating Beacon vs. Flashing Beacon



 
 
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  #1  
Old February 2nd 04, 03:49 PM
Mike Rapoport
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Default Rotating Beacon vs. Flashing Beacon

My upper rotating beacon has stopped rotating and I am debating whether to
overhaul it or replace it with one of the new Whelen flashing beacons. The
flashing beacons are all solid state with no moving parts but cost $800 and
I am also concerned about noise since the beacon is located a few inches
from the COM1 antenna. Has anyone replaced a beacon with the new flashing
type? How far from your COM antenna is it? Is there any noise on the COM?
A question for the electronics gurus: Do I even need to be concerned with
noise?

Thanks in advance!

Mike
MU-2


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  #2  
Old February 2nd 04, 05:43 PM
Orval Fairbairn
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Default

In article . net,
"Mike Rapoport" wrote:

My upper rotating beacon has stopped rotating and I am debating whether to
overhaul it or replace it with one of the new Whelen flashing beacons. The
flashing beacons are all solid state with no moving parts but cost $800 and
I am also concerned about noise since the beacon is located a few inches
from the COM1 antenna. Has anyone replaced a beacon with the new flashing
type? How far from your COM antenna is it? Is there any noise on the COM?
A question for the electronics gurus: Do I even need to be concerned with
noise?

Thanks in advance!

Mike
MU-2



A strobe draws considerably less power than a rotating beacon and puts
out a lot more light. The Aircraft Spruce catalog lists single-strobe
systems for $225 up to $370 for multiple-strobe systems.

I don't know where the $800 figure came from.
  #3  
Old February 2nd 04, 05:49 PM
Mike Rapoport
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Default

The $800 figure is the Aircraft Spruce price for the strobe approved to
replace my beacon.

Mike
MU-2

"Orval Fairbairn" wrote in message
news
In article . net,
"Mike Rapoport" wrote:

My upper rotating beacon has stopped rotating and I am debating whether

to
overhaul it or replace it with one of the new Whelen flashing beacons.

The
flashing beacons are all solid state with no moving parts but cost $800

and
I am also concerned about noise since the beacon is located a few inches
from the COM1 antenna. Has anyone replaced a beacon with the new

flashing
type? How far from your COM antenna is it? Is there any noise on the

COM?
A question for the electronics gurus: Do I even need to be concerned

with
noise?

Thanks in advance!

Mike
MU-2



A strobe draws considerably less power than a rotating beacon and puts
out a lot more light. The Aircraft Spruce catalog lists single-strobe
systems for $225 up to $370 for multiple-strobe systems.

I don't know where the $800 figure came from.



  #4  
Old February 2nd 04, 06:42 PM
Ben Jackson
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Default

In article . net,
Mike Rapoport wrote:
My upper rotating beacon has stopped rotating and I am debating whether to
overhaul it or replace it with one of the new Whelen flashing beacons.


The Grimes rotating beacon on my plane did not rotate when I bought it.
My understanding is that you can't get parts for them anymore, but some
people have made a single working unit from several dead ones. My wingtip
strobes are visible from the rear, so I don't think it's even required
for night flight, but on the advice of my A&P he replaced it with a
strobe. The new one has no moving parts, just a half red/half white
lens and a strobe that's powered by one of the channels of the strobe
power supply that was already installed.

I haven't noticed any radio noise from this installation. In fact,
when I took apart my wingtip to change my landing light I discovered
that the remote flux gate for my HSI is mounted in the wingtip right
behind the nav and strobe lights. And it seems to work fine.

The main thing I don't like about it is that in ground operations when
you wouldn't want to be blinding people with strobes you can't have a
beacon either. No one has run into me yet, though.

--
Ben Jackson

http://www.ben.com/
  #6  
Old February 3rd 04, 04:00 AM
Ron Rosenfeld
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Default

On Mon, 02 Feb 2004 14:49:50 GMT, "Mike Rapoport"
wrote:

My upper rotating beacon has stopped rotating and I am debating whether to
overhaul it or replace it with one of the new Whelen flashing beacons. The
flashing beacons are all solid state with no moving parts but cost $800 and
I am also concerned about noise since the beacon is located a few inches
from the COM1 antenna. Has anyone replaced a beacon with the new flashing
type? How far from your COM antenna is it? Is there any noise on the COM?
A question for the electronics gurus: Do I even need to be concerned with
noise?

Thanks in advance!

Mike
MU-2


Mike,

I was going to replace it ten or fifteen years ago. Unfortunately, the
strobe that Whelan had caused interference in my WX10A Stormscope. The
shop tried all kinds of shielding but were unable to get a clean WX10A. So
I'm still rebuilding the Grimes every two or three years.


Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)
  #7  
Old February 3rd 04, 02:22 PM
Rosspilot
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Default

My beacon just went TU and yesterday my mechanic suggested installing a brand
new self-contained flashing unit by Whelan
for $150. No rotating moving parts, and weighs about 4 lbs less than what is
installed now (original).
I said do it.
www.Rosspilot.com


  #8  
Old February 3rd 04, 04:12 PM
Kyler Laird
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Default

"Mike Rapoport" writes:

Has anyone replaced a beacon with the new flashing
type?


I did during The Big Annual in 2000.
http://lairds.org/Kyler/photos/disk0...g/image_viewer

I also added Whelan strobes to the tips and tail at the same time.

How far from your COM antenna is it?


10 feet? My strobe is on top of the tail (part of the rudder). Comm.
antennas are on the top of the fuselage. (See photo.)

Is there any noise on the COM?


I haven't noticed it. (I think I *would* notice it if it's there. Such
things annoy me. But maybe I mentally filter it now.)

--kyler
  #9  
Old February 3rd 04, 04:29 PM
Newps
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Default

That's the one I put on. No brainer.

Rosspilot wrote:

My beacon just went TU and yesterday my mechanic suggested installing a brand
new self-contained flashing unit by Whelan
for $150. No rotating moving parts, and weighs about 4 lbs less than what is
installed now (original).
I said do it.
www.Rosspilot.com



  #10  
Old February 3rd 04, 04:32 PM
Mike Rapoport
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Posts: n/a
Default

Thanks for all the replies. I ordered the Whelan strobe type beacon
yesterday. It was $800 and the cost to overhaul the rotating beacon was
quoted at
$900(!!!).

Mike
MU-2

"Kyler Laird" wrote in message
...
"Mike Rapoport" writes:

Has anyone replaced a beacon with the new flashing
type?


I did during The Big Annual in 2000.
http://lairds.org/Kyler/photos/disk0...g/image_viewer

I also added Whelan strobes to the tips and tail at the same time.

How far from your COM antenna is it?


10 feet? My strobe is on top of the tail (part of the rudder). Comm.
antennas are on the top of the fuselage. (See photo.)

Is there any noise on the COM?


I haven't noticed it. (I think I *would* notice it if it's there. Such
things annoy me. But maybe I mentally filter it now.)

--kyler



 




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