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Baltimore TV Hill - Red Candelabra TV Tower
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TV Tower
About this creation
The main photo is a Lego minifigure scale (but not to scale to the real world but rather a super deform version of a ) model of a Red Candelabra TV broadcasting tower at TV Hill Baltimore Maryland which is operated by and shared by WBAL TV(NBC) WMAR TV (ABC) and WJZ TV(CBS). The Lego version of this TV tower is slightly over three feet tall. The TV tower in the real world is 997 feet(304 meters) tall. This Lego Tower was made for a Washington Metro Area Lego Train Club (WamaLTC) display as part of the "Holiday Train Garden" exhibit that will be running from November 23 2018 to January 6 2019 at the Balimore & Ohio (B&O) Railroad Ellicott City Station Museum, the oldest standing train station in the USA. This TV tower is 58 inches high. The major design build challenges was (1) the triangular cross section of the tower and its platform and (2) stability due to the high center of gravity caused by the large antenna tower platform and the low vibrations that the display area would face because of a nearby active freight rail road track. The second challenge was the more difficult one of the two. (3) making this model sturdy so that it does not fall apart during assemby and dissembly.

Below is a photo of the TV tower in the real world which was initially erected in 1959 and upgraded in 1997. [1]



Note that the real world Baltimore TV Hill tower and this Lego model are divided into three sections by two platforms that stick out on the side of the tower.

Below is a photo of the top of the tower. The Television tower itself has an equilateral cross section and top antenna platform is an equilateral triangle..This Lego design is missing the FAA navigational lights that are required by Federal Aviation Administration (FAA) Advisory Circular (AC) 70/7460-1L - aka Subject: Obstuction Marking and Lighting Date: 08/17/18 [3]




Below is a photo of the ground level of this Lego tower - there is not much detail here because I have run out of time to add more detail.. The ground level of the real world TV Hill tower on the internet by visiting Google maps and searching for "3723 Malden Ave, Baltimore, Maryland, USA." Google provides a satellite view and 360 view street of this site. In the real world there are three red transmission cable metal cage conduits that spring out of each of the three sides of the tower going to three different buildings that looks sort of like roots of a tree. The real world candelabra tv tower also is protected by a tall fence and held up by guy lines/cable (which I cannot use in a Lego display) ... because this moc is limited to one base plate - I've dropped the red metal cage conduits to the tower and the tower cannot be stablized by guy wires as in the real world.





Below is a photo of the tower looking up



Below is a photo of the tower down up



This MOC would not be possible without the help of Bricklink and the vendors on bricklink who sold me the parts I needed. Thanks soo very much! This model was displayed at 2019 Virginia Brickfair - where Technic rubber axle connectors was used to bind the three sides of the tower. A WamaLTC member assessed that the central axle that connects the tower to the base plate with tuned mass dampener is not strong enough so it was removed and replaced with special base plate connection that supports all three sides of the equilateral triangle equally by anchoring one side normally to the base plate and the other two equilateral sides of the tower are anchored to the base plate via Technic rotational joint ball-n-sockets. The tower base plate was raised to accomodate a LED power pack AND also for Modular building technic pin holes.

This tv tower was last displayed at the 2019 Maryland State Fair (Aug Sep 2019) in collaboration with Classic Plastic Brick's Lego train display in the Main Exhibition Hall.


I am also looking for diagrams, blueprints, and color schemes for making a replica the red candelabra's sister tower and Baltimore's highest TV tower, the WBFF tv tower. The WBFF tower stands 1280 feet (390 meters) tall.
.

[1]

A tower of power rose up above city Structure: The Candelabra like transmission tower atop Television Hill completed in 1959, improving TV reception for thousands.
by Fred Rasmussen, The Baltimore Sun. September 21, 1997

http://articles.baltimoresun.com/1997-09-21/features/1997264146_1_tower-of-power-transmission-tower-barnard


[2]

The real world Baltimore TV Hill tower used guy lines to keep it stable from high winds and other vibrations, but this is not possible for the Lego display so another approach is needed as the tower center of mass gets increasingly higher. Initial efforts to use a single axle to anchor the tower to dead weights in the base plate prove too weak and replaced by a special base plate connection that supports all three sides of an equilateral triangle


[3] there are 3 types of Obstruction lighting system that could be used ...Aviation Red Lights, Medium intensity flashing white light, hi intensity flashing white lights..AC 70/7460 can be downloaded at ...
https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_70_7460-1L_-_Obstuction_Marking_and_Lighting_-_Change_2.pdf



Comments

 I made it 
  August 3, 2019
The Lego Power Function IR digital PWM works at 38khz - long wave wireless band which is used nautical-navigational-submarine communications.. but a more common used for this frequency range might be heart rate monitors... you might end up talking to someone's pacemaker...:-P... This tower is unstable...still working on making it more stable...if I get it to be more stable I will put LED lights on it and maybe fit it for a snap circuit radio antenna option... .
Quoting Jeremy McCreary Excellent bit of LEGO structural engineering, Walter! You =might= be able to make a crude PF transmitter with a PF battery, IR receiver, and enough PF extension cables to reach top of tower, where loose end might act as a dipole antenna. Since receiver output is DC with pulse width modulation (PWM) applied, loose end of cable might emit a signal echoing the PWM waveform, which you'd control with your IR handset. How you'd pick up signal, I don't know, and it might not work at all.
 I made it 
  December 6, 2018
Quoting Jeremy McCreary Excellent bit of LEGO structural engineering, Walter! You =might= be able to make a crude PF transmitter with a PF battery, IR receiver, and enough PF extension cables to reach top of tower, where loose end might act as a dipole antenna. Since receiver output is DC with pulse width modulation (PWM) applied, loose end of cable might emit a signal echoing the PWM waveform, which you'd control with your IR handset. How you'd pick up signal, I don't know, and it might not work at all.
Elenco Snap Circuits now has Lego connectors that in theory could be used to integrate Snap Circuit components into a Lego model. Snap circuits are all running off three AA batteries - so any transmitter signal would be weak..
 I like it 
  December 6, 2018
Excellent bit of LEGO structural engineering, Walter! You =might= be able to make a crude PF transmitter with a PF battery, IR receiver, and enough PF extension cables to reach top of tower, where loose end might act as a dipole antenna. Since receiver output is DC with pulse width modulation (PWM) applied, loose end of cable might emit a signal echoing the PWM waveform, which you'd control with your IR handset. How you'd pick up signal, I don't know, and it might not work at all.
 
By Walter Lee
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LEGO models my own creation MOCpages toys shop Baltimore TV Hill - Red Candelabra TV Tower Buildings


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