[SBE] LED tower lighting

[Reynolds, Paul (CXR-San Antonio)]

My top one of GEN-I survived 5-1/2 years on a 1/4 wave 50kw AM.  I am
replacing with a GEN-III and yes, I will probably have a current sensing
problem on my existing I need to deal with.  Or, I can look out my back
door and see it.

My top GEN-II is about 3 years old and I am in process of replacing it's
P/S with a GEN-III one....under warranty.

When I converted my whole tower to LED...I also installed a "Unimar"
Controller.  It does quite well on individually monitoring each beacon
(I have 7) and each side marker tier of 3 fixtures.  I used existing
wiring from my old EG&G Strobe light system and left over wiring from a
Rosemont Ice Detector system that was also a waste of money.

Replaced a 3ph 480vac CB with a 20amp 120vac one.  This system has been
in place about 3 years with no other issues.  And no more headaches of
strobe problems!


Paul K. Reynolds, C.E.
 paul.reynolds at coxradio.com
 

-----Original Message-----
From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of
chscherer at everestkc.net
Sent: Monday, May 05, 2008 12:05 PM
To: sbe at sbe.org
Subject: Re: [SBE] LED tower lighting

I'm curious to hear from someone with LED beacons. How have they
survived the top spot on the tower?

Also, has someone figured out a way to monitor the current draw
situation that Cris describes?

Chriss

----- Original Message -----
From: Cris Alexander <crisa at crawfordbroadcasting.com>
Date: Monday, May 5, 2008 11:20 am
Subject: Re: [SBE] going green


> We converted to Dialight LED marker lights company-wide over the 

> past couple

> of years with excellent results. The marker lamps, which are a direct

> replacement for most incandescent fixtures (they simply screw onto 

> the end

> of the existing 3/4 or 1-inch conduit), have been very reliable. 

> 

> We have not yet made the jump to LED beacons for a number of 

> reasons, the

> biggest of which is cost. I also spent some time looking at one of the

> beacons and was uncomfortable with the amount of electronics in 

> the fixture,

> thinking that one of these at the top beacon position would not 

> survive a

> lightning strike on the tower. We plan to try the beacons on one 

> of our FM

> towers later this year to see how it does before we consider 

> making the move

> company wide.

> 

> Our challenge with the LED markers (that will be a bigger 

> challenge with the

> beacons) is current monitoring for remote control/compliance -- 

> especiallyon insulated AM towers.

> ______________________________

> Cris Alexander, CPBE, AMD, DRB

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