Antenna tower load calculations

Antenna tower load calculations. Antenna Loads • Area calculations derived utilizing a standardized approach • Less latitude for the designer. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. Each larger model allows for more loading capacity. 5. No two mast/antenna installations are identical, and the Mastrant calculators can make specific calculations for your individual installation’s guying requirements. Jun 5, 2021 · The most widely used formula to calculate the approximate overall length of wire required for a dipole is: 468 / frequency (MHz) = length of wire in feet. Resources listed under Antenna Wind Load category belongs to Theory main collection, and get reviewed and rated by amateur radio operators. ‘Tis the sea Scottish architecture studio Kettle Collective will build Lakhta Centre II, a 150-story, 2306-foot tall tower in St. The direct-to-investor approach eliminates salesmen An HIV viral load is a blood test that measures the amount of HIV in a sample of your blood. Unfortunately, the loads are specific to SWT ’s and are not useful for anything else. a 50 m microwave antenna tower Dec 17, 2020 · The Telecommunications Industry Association (TIA) is responsible to provide recognized literature for the analysis & design of communication towers. 27 centimeters). This is it is at the anchor point and therefore imposes no because 3. According to Section 5. Generally, series circuits are si By Alex Burke Cell phone antennas are placed on or within a cell phone to increase its ability to connect to tower signals. Other lateral loads include ice, earthquake, and wind loads. This calculator only provides rough estimates of load tolerances with regard to DX Engineering's Masts. Whether it is a roof, a sign, or a steel structure, with this wind force calculator, you can determine the wind pressure created on it depending on the wind speed, helping you make sure it's sturdy enough to withstand even the worst storm. This value is used in combination with a luminaire’s weight to determine the mounting requirements for a particular application. Mounting the rotator on a pole or mast limits the antenna’s size and the mast’s length from the rotator to antenna. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View Will the Leaning Tower of Pisa ever fall? Will the peculiarly enduring tower ever vanish from the Italian skyline? Click on to learn more. Adding to SkyCiv's already list of free tools, is the Wind Load and Snow Load Calculator for ASCE 7-10 / ASCE 7-16 / ASCE7-22, EN 1991 (wind and snow), NBCC 2015 (wind and snow), NBCC 2020 (wind and seismic) AS/NZS 1170, IS 875-3 (wind), NSCP 2015 (wind and seismic), CTE DB SE-AE (wind), and CFE Viento. Advertisement Front-load washing machines may be the sup Find out more about air conditioning cooling load. Next, add up to five antennas, inputting their height from the tower top and wind load area. Natural or forced draft are the commonly used design. The Canadian code for Antennas, Towers, and Antenna Supporting Structures, CSA-S37-18, annex N sgive Wind Load (sq. Self-supporting towers and lattice towers are among the most commonly used structures for supporting antennas due to their numerous benefits. Plug in all of your variables and do the math. Its value varies for each antenna shape and must be determined experimentally or with the aid of Computational Fluid Dynamic (CFD) analysis. Lattice towers are light weight structures and governed by wind loads due to tower body, antennas and other equipment. TIA in 2005 released a standard “TIA-222-G” which has gained a widespread reference and most of the existing tower structures around the world have been constructed as per guidelines of this standard. A quarter-wavelength antenna is easy and inexpensive to build and can be an effective antenna with a low angle of radiation (that is, power is radiated out, not up). owners to understand the impact that each base station antenna has on the overall tower load. (The longer the mast, the less likely it will fit into the tower between the rungs of regular lattice tower, so take advantage of the op-portunity!) It is then an easy task to raise it once the tower is complete, pulling it Theses are the same sturdy, robust self-supporting antenna towers that ROHN tower manufacturing has fabricated for years. Nestled in the mountains near the northern coastline of Taiwan, just outside of its capital, is a tower that, once full, will Helios Towers, one of Africa's largest telecoms tower leasing companies, has raised $364 million after listing on the London Stock Exchange. Effective Projected Area (EPA) Calculation Definition: EPA is a coefficient used by the lighting industry to determine how much force a luminaire will apply to the mounting brackets or pole at a given wind velocity. It is however part of the total force the Determine the compressive force in the antenna tower. 25G available as a self-supporting tower up to 40' 45G available as a self-supporting tower up to 45' 55G available as a self-supporting tower up to 50' Quarter-Wave Vertical Antenna Length Calculator. our model numbers are simply the wind load rating followed by the tower height. These radio frequency calculators help with unit conversion, attenuator design, antenna design, radars, and various other basic calculators. For example, let’s say you want to determine the wind load on an antenna that is 3 feet long with a diameter of 0. These systems power everything from machinery to lighting, making them crucial for day-to-day operatio When it comes to maintaining a comfortable indoor environment, the efficiency of your HVAC system plays a crucial role. However, in 2018, TIA released the latest Antenna Supporting Structures and Antennas , the International Building Code, and ASCE 7 , Minimum Design Loads for Buildings and Other Structures . If you’re looking for extraordinary views, In Taipei, the living compete for space with the dead. In this blog series, we will discuss different methods for wind load calculations, the factors that influence its magnitude, and the effects a high wind load can have on a structure. Nov 22, 2022 · 2. All of Rohn’s specifications include this information. The tower’s dead loads include the self-weight of the tower, the weight of the antenna and other equipment, and the weight of the ladder and feeders. Dead loads on tower. e self-supporting, non-guyed) ham antenna towers. Click here to take a look at the estimator and give it a try. This calculator will eliminate a lot of guesswork, ultimately saving you time and money. To accurately calculate wind load on an antenna, it’s essential to have reliable wind speed measurements. -based Isotropic Systems has raised a $40 million funding in an “oversubscribed” round that the startup says will help it get its next-generation broadband terminal to the prod One of the great things about digital television is also one of the not-so-great things. Simple Antenna Tower Base Calculation. 5 inches in a gust of 70mph winds. 2. Learn how to calculate your vehicle's cargo carrying capacity at HowStuffWorks. With ASMTower’s design solutions, designing self-supporting towers becomes a fantastic task, and you can create an economic design without compromising on quality or safety. A load factor is simply the energy load on a system compared to Calculating the occupant load of a room or building requires first calculating the area of the space in question in square feet, and then dividing the area by the occupant load fac Electrical load calculations are a critical aspect of any electrical system design. Ice shall be included on the tower structure, antennas, appurtenances, waveguides, transmission lines, and guy strand. As you review the design calculations, you see that part of the construction plan is to use a turnbuckle to tighten cable AD until it reaches 1300lb of tension. The centroid is where the perpendicular lines Jul 25, 2023 · The base part of the tower legs connects to the foundation via anchor bolts. In this regard, it becomes important to assess the wind load acting on antennas at the development stage. S. Should you have any questions on K-factors, windloading or other antenna load calculations, Heights Tower's sales or technical staff will be glad to discuss and provide information, to the best of our knowledge. There are usually four radials, three being a minimum, but you could use up to six. The results are conveniently displayed in inches, centimeters, feet and meters. Petersburg, Russia. Inside tower mounting eliminates any sideways load on the rotating assembly relative to the base. A TV antenna amplifier adds energy to input signals from the TV station broadcast towers the antenna picks up. And the tower has three or four sides of solid rod or pipe, depending on the design. Loads calculations other than wind loads are the same for both standards. Projected Surface Area of Antenna Load - Find out the square foot surface area of each antenna for wind loading. Oct 11, 2008 · Wind Load calculation is with BS6399-2 "Wind Loads" and not with BS8110. ASCE Wind Load calculation is more comprehensive but carries similarities. Aug 8, 2012 · The elements beyond the antennas themselves can easily add up to be a big part of the overall wind load. The sun may begin to shine brightly on Tower Do front-load washers save you money? Find out if front-load washers save you money in this article by HowStuffWorks. ft) MSQ-71030LP8 M2 Antennas 71030LP8 13. Advertisement Most Photoshop graffiti speaks louder than words. This section will guide you through the process of gathering wind speed data and utilizing local weather reports to obtain the necessary information for your calculations. Calculating Antenna Wind Load category is a curation of 4 web resources on , Analysis Of Antenna Mast Strength and Bending Stress, Towers and Wind Load, Antena Wind Load. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View AvGeeks could one day get a new vantage point for plane spotting from the observation deck of the historic control tower at Washington Dulles International Airport (IAD) -- if the Cargo carrying capacity is something that all RV drivers and towers should know. Increase the number of over-the-air (and soon t Learning to use the right total resistance formula for the specific situation you're considering is all you need to calculate for a load resistor. Sep 15, 2024 · Question: Problem 3: As an engineer, you are tasked with providing quality control for the design and construction of a new antenna tower that is to be built. In addition to streaming video, over-the-air HD broadcasts are availabl Find the perfect TV antenna for your home with our top picks and buying guide. The drawings in this article are based on Rohn H Series Masts. 3 Future Antennas The Customer Tower Requirement Letter includes the antenna and waveguide/coax information required to calculate loading on the tower. ”. 5 to get > a number that would be appropriate to compare against the Rohn (or in my > case US-Tower) "projected" wind load maximum. Advertisement A cell phone tower is typ What caused the World Trade Center towers to collapse on 9/11? Learn about the factors that caused the World Trade Center towers to collapse on 9/11. All you have to do is input the span of the beam, the magnitude of the point loads, and their distances from support A. Jul 17, 2024 · Using a thrust bearing keeps most of the load off the mast, further increasing wind load capabilities. bending moment on the applied to the top of mast. The crew uses a mobile crane to assemble the jib and the machinery section, and places The Tower card is one that people are afraid to draw. 0 10-30 MHz Log Periodic +40 M Dipole MSQ-KT34M2 M2 Antennas KT34M2 4. 6) Will the antenna collapse under the load that you found in 3. This analysis deals with the portion of the mast that protrudes above the top of the tower. For example, if your antenna calculation resulted in a tower designed for 5 square feet of wind load and you wish to be 50 foot tall, the model number you would choose would be a 5-50. > > It was suggested that I needed to multiply the Force-12 number by 1. Accurate load calculations ensure that the electrical system can handle the demand placed on it The Federal Communications Commission states, “Cellular or PCS cell site towers are typically 50-200 feet high. Through wind tunnel testing. May 2, 2019 · EIA-RS-222 was developed to provide a uniform method of specifying and calculating tower designs which applied to steel transmitting antennas and supporting towers. To accurately calcu - late and account for antenna-based wind loads, tower engineers must have complete and precise data regarding antenna drag coefficients and wind loads. ” Cell phone towers can exist as stand-alone structures, or an antenn When it comes to designing an efficient and effective HVAC system for residential buildings, one crucial factor that cannot be overlooked is the Manual J Residential Load Calculati Industrial electrical systems are the backbone of any manufacturing facility. However, most simple calculations of wind load stop by giving you the area. Lighting and Cameras - For the purpose of utilizing TowerCalc, the program treats lighting and camera mounting loads similar to antenna loads except the safety factor must be greater than 2 for these types of loads. As such antennas often have a large area and must be precisely pointed out, such towers have to be designed and built to limit wind induced movement. > > I did my own calculations on my C-3E yagi, adding up each separate element > section's wind load computed by multiplying the diameter antennas. But what if the seemingly ominous tarot card is just misunderstood? Advertisement So, you've got your first tarot deck in hand Cell-phone Towers - There are plenty of problems associated with how cell phones work. Tower loads include the tower, a rotor, the antenna and a mast. A "practical" step-by-step guide to establish wind loads on antennas according to EN 1991-1-4. This easy to use calculator will display Antenna load (top load) should not exceed an effective projected area (EPA) of 2 square feet for this type of mast (see your antenna specifications). The authors of this publication have a combined 40 plus years of experience designing new and analyzing existing wireless infrastructure; specifically telecommunication towers. Jul 28, 2024 · The wind load calculator enables you to compute the wind force on any structure. Antenna design calculators category is a curation of 106 web resources on , RF Toroid Calculator, Parallel Square Conductor Transmission Line Calculator, HB9CV Online Antenna Calculator. 2 222-F, Figure 1, of 0. Jul 3, 2020 · 3 Load Calculation on Microwave Antenna Tower Tower of 50 m height and having 20 number of panels is considered for analysis. Load Calculation Methods. At 02:59 PM 2003-09-03, Bob Gates wrote: If you have a tower rated to hold 30sf of antenna at 70 mph, and 10sf at 90mph, what correlation, if any, can you draw about the load handling ability at 80mph. 5? 3. Common antenna tower and mast configurations consist of a rotatable round hollow tubular mast protruding from the top section of a fixed tower. Using the Mast Load Estimator is easy. When you've a weak connection, you're out of l Cooling tower is used to remove heat from the air conditioning system. 25G available as a self-supporting tower up to 40' 45G available as a self-supporting tower up to 45' 55G available as a self-supporting tower up to 50' Hand calculation is explained for calculating wind load on antenna towers. There are. This figure is Feb 28, 2023 · The details of load calculation, modeling and analysis are discussed. DO NOT OVERLOAD YOUR TOWER BY EXCEEDING THE Download scientific diagram | Calculation model (a) and actions of the tower: selfweight (b), antenna self-weight load (c), wind antenna load (d, e) from publication: A comparative criteria method Theses are the same sturdy, robust self-supporting antenna towers that ROHN tower manufacturing has fabricated for years. The center of mass (COM) for each load is described. It can determine how well your HIV medicines are working. Nevertheless, it is the customer’s ultimate responsibility to accurately calculate his/her antenna loads. That’s the Cd of a brick, and most things are more aerodynamic than a brick. , March 1 The Water Club to be Rebranded What are some efficient features of top-load washers? Learn about 5 efficient features of top-load washers in this article. For professional wind load calculations on a particular installation you will want to provide your antenna weight and dimension specifications to a qualified engineer along with your specific installation location, height and mounting structure specifications. This tower analysis is based the antenna being installed at a height of one foot above the top of the tower. Sep 3, 2003 · Subject: Re: [TowerTalk] Tower wind loads Date: Wed, 03 Sep 2003 16:20:39 -0400. 5 Tri-Band Yagi Jul 24, 2023 · Calculate the wind load. Wind pressure calculation is clearly shown on BS6399 with respect to all particular criteria that your structure might require. Nov 23, 2021 · That’s why we put together our Mast Load Estimator, a free tool that helps users select the right size DX Engineering tower mast for antenna wind loads. The calculations are Aug 14, 2019 · To completely calculate wind load, you need to know the coefficient of drag of an object as well as the weather conditions it’s in. As taller towers (up to 2,000’) became widespread in the 1980s, a new revision of the structural standard EIA-RS-222-C was released and integral to the tower community. Most roofs constructed after modern regulations were passed in the U. hold telecommunications antennas. A wide range of add-on modules provides you with individual customization options, such as automatic generation of structures and loads, determination of effective lengths, and design according to the Eurocode. Why do they specify so much concrete in such a large hole? Consider the tower, mast, beam antenna, and tower base, as poorly drawn above. The US president is reportedly keen on seeing tomorrow’s Bastille Day mili Iconic Paris attractions like the Louvre, Eiffel Tower, and Grand Palais are closed for the day, as are stores in central shopping districts, like Galleries Lafayette. In addition to the main parameters characterizing the lens antenna, it is necessary to consider the safety of the tower and reliability of mounting hardware and supporting structures. This has not been an engineering analysis so much as a quick estimate of the magnitude of the problem. This heavy duty series of Telescoping Masts uses 1-1/4" 16 gauge galvanized tubing for top section. ‘Tis the sea The Water Club to be Rebranded the MGM Tower and Deliver Luxurious New Room and Suite Experiences Download images hereATLANTIC CITY, N. The cell tower holds the transmitter that cell phones op You should calculate how much snow your roof can hold—and then watch for warning signs after a big snowfall. To calculate rebar spacin Manual J residential load calculations are crucial for determining the heating and cooling needs of a home. When you get the signal, it's crystal clear. Depending on the aerodynamic efficiency of the antenna, the increased wind load can be significant. 3. This is a simple calculator for solving the antenna wire catenary between to end points given the design wind speed, mass per unit length of the wire, wire diameter and Gross Breaking Strength of the wire. The information provided This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. Using the values determined above, you can now calculate wind load with the equation F = A x P = A x Ce x Cq x Qs x Iw . One key aspect of ensuring optimal energy efficiency is cond Rebar spacing is calculated so that each square foot of reinforced area is sufficient for its load and can be calculated using a rebar spacing calculator. The wind load of the antenna(s) shall not exceed the load shown in these calculations. Sep 20, 2020 · The only place it may become a concern is when installing tower. One Van Ness has b Iconic Paris attractions like the Louvre, Eiffel Tower, and Grand Palais are closed for the day, as are stores in central shopping districts, like Galleries Lafayette. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio Show Latest View All Podcast Episodes La A no-load mutual fund is a fund that investors purchase directly from an investment firm, rather than going through a middleman. 3. If your project involves towers or masts, RFEM and RSTAB are helpful companions for your planning. The Mastrant calculators help answer these questions and remove much of the guesswork. accepted panel antennas that existed in the industry. After a year of delays, a major Africa- Good morning, Quartz readers! Good morning, Quartz readers! Donald Trump visits Emmanuel Macron in Paris. Provide the tension in each cable in pounds (lb). One of the great things about digital television is also one of the not-so-great things. An HIV viral load TWRFF: Get the latest Tower Resources stock price and detailed information including TWRFF news, historical charts and realtime prices. ENTER ANTENNA LOAD INFORMATION. The tower is having base width of 6 m and top width of 2 m. Jan 18, 2024 · Our calculator is easy and simple to use. The COMs are located on a line represented by the centroid of the triangular cross section of the tower, which is shown in Figure 2. Resources listed under Antenna Calculators category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. 5 works. The Owner of the tower shall assume full liability for verification of the antenna loading. Some of you have probably been trying to figure out where else you can mount your antenna Getting radio frequency can be tricky if you live far from a radio tower. Note that until now the load imposed by antenna B was ignored. J. YOUR ACTUAL CONFIGURATION, LOCAL ENVIRONMENTAL FACTORS AND LOCAL LAWS AND REGULATIONS MUST BE REVIEWED BY A PROFESSIONAL ENGINEER BEFORE INSTALLATION. Determine the constant-moment curve (safe-operating curve) at the base of the tower, based on the tower manufacturer’s wind-load specifica-tion, as a function of tower height and wind velocity for any generalized antenna and mast configuration. Further, it is concluded that the The Universal Band and Block PIM Calculator allows you to first select a regional tab and then select various combinations of transmit (downlink) frequency bands/blocks to determine whether there are any theoretical possibilities of 2nd, 3rd, 4th or 5th order passive intermodulation (PIM) products or "hits" being produced in the companion uplink (receive) frequency bands/blocks. What Are the Main Components of a Self-Supporting Antenna Tower. Apr 19, 2024 · Gathering Wind Load Data. I ag U. The analysis is done in an Excel spreadsheet that can be downloaded here. 7) Determine the maximum tension in each cable given that the antenna tower can only withstand 2. When you've a weak connection, you're out of l More and more people are cutting the cord and giving up cable, but that doesn't mean you have to give up TV. Selection of hybrid tower is mainly due to three-legged configuration and pipe sections have less drag coefficients compared to four legged angular towers which resulting less wind load on tower for structure weight optimization. Right at the turn of the year, Bay Area residents got a new look at a tower planned near the heart of San Francisco. Third choose the right Universal Tower for you application. 1 kip in compression. Advertisement Ask any American Find out the HVAC Softwares needed to do mechanical design, load calculations and duct calculations. 1. This strengthens the signals, which can improve the picture and sound A load factor is calculated with the following formula: Load Factor = Month’s kWh Usage / (Peak Demand or KW x 730). com. Feb 21, 2014 · Footings are always a special challenge because your maximum wind speed, soil/rock type, tower section and antenna mass/windage all have an effect on design. These calculations help HVAC professionals make accurate equipment sizin Maybe you're a ham radio operator setting up a new rig, or maybe you're just a guy who wants to stop paying $80 to $120 per month for satellite TV and still get your digital, high- One thing that people hate when they have a TV antenna is when it can't get a good signal. Abstract On a cellular tower, the base station antennas account for a significant portion of the total wind load forces imparted on the tower’s structural members. “Wind load” is a calculated value representing the total force on a structure or object cause by pressure from wind moving over it. 6, the wind load can be obtained in the following ways: Based on the released standards. Through computational fluid dynamics (CFD) simulation. 5 inch (1. Base station antennas not only add load to the towers due to their mass, but also in the form of additional dynamic loading caused by the wind. 10. A self-supporting antenna tower consists of the following: • Off-Center-Loaded Dipole Antennas – – Hall, K1LPL, QST September 1974 • Designing A Shortened Antenna – – Lopes, CT1EOJ QST October 2003 • Homebrew Your Own Inductors – – Johns, W3JIP –QST August 1997 • Optimum Design of Short Coil-Loaded High Frequency Mobile Antennas – – Brown, W6TWW Compendium Vol. Standardized Calculation. The formula for calculating the approximate length of a quarter-wave vertical antenna is: A final calculation can be done to arrive at the total wind load area as applied to the top of the tower. The wind intensity converted into point loads and loads are applied at panel joints. ASMTower performs wind and ice load calculations according to the chosen code and distributes the resulting loads, along with the weight of the structure and all attached elements, while considering load decentralization. K. Advertisement Front-load washing machines use less water a There’s a lot to be optimistic about in the Financial sector as 2 analysts just weighed in on Willis Towers Watson (WTW – Research Report) There’s a lot to be optimistic a Where can you load a Netspend card? Can you load it for free? We have the list of places where you can put money on a Netspend card -- plus fee amounts, where applicable. Do not exceed the manufacturer’s specifications for wind loads for your planned tower height, guying arrangement, exposure, etc. Visit HowStuffWorks to discover how cell phones work. Advertisement The tower of Pisa has been Advertisement Tower cranes arrive at the construction site on 10 to 12 tractor-trailer rigs. D. Learn more. 4. Expert Advice On Improving Your Home Videos Latest View Tower Resources News: This is the News-site for the company Tower Resources on Markets Insider Indices Commodities Currencies Stocks Is there an easy way to measure the height of a cell phone tower in my neighborhood? Advertisement There are several different techniques you can use depending on where the tower i Find out the HVAC Softwares needed to do mechanical design, load calculations and duct calculations. Overview. 10 in NGMN-P-BASTA Recommendation on Base Station Antenna Standards V9. mast, then enter your project’s anticipated overall height. You’ll find it on the home page under “DX Engineering Exclusives. o. The purpose of this study is to only calculate the wind load on the radio antenna tower, the calculation of the wind load is only viewed from the angle of 0°, 30° and 60° to the main towing cable on each section to the most angles on the two types of antenna tower frames, triangle type, and square type. For simple calculations, a coefficient of drag of . The drag coefficient is a key component in calculating wind load on an antenna. For those interested in understanding some tower base designs for freestanding (i. • Must include antenna pipes – Depends on the direction under consideration • Design Wind Force on Appurtenances – The design wind force on appurtenances (either discrete or linear but excluding microwave antennas), F A Just remember that if your antenna IS in fact at 5 1/2 feet, then a repeater antenna may be at 50 to 1000 feet or more above the flat ground beyond the horizon! The much higher repeater antenna increases the line of sight distance between your "station" and the repeater antenna tremendously! 9. If you're having trouble hearing your favorite stations, consider getting an FM antenna so you can get tho Increase the number of over-the-air (and soon to be digital) television channels you can receive with a simple-to-construct antenna. At first, you will only see fields for two loads (Load 1 and Load 2), but once you enter a value for x 2 \small x_2 x 2 , the fields for Load 3 will show up, and so on. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. So very stable structure types like lower lattice towers and towers built of reinforced concrete are used in most cases, although also guyed masts are used for taller Jan 12, 2020 · In this paper, critical review on the estimation of wind load on lattice towers is undertaken using IS 875 (Part 3) through comparative study by referring ANSI/TIA-222G standard which is specially dealt for analysis of lattice tower. constant amplitude stresses using SWT loads and comparing with crack initiation t hreshold stress levels for common structural detail and load combinations. everything RF has created a series of RF calculators to help engineers and students with common calculations that they need to conduct frequently. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. Decide if you’re going to use DX Engineering’s 2" or 3" O. Simply lower the mast into the tower sec-tions and let it rest on the tower foundation as you build the rest of the tower. You neglected any antenna load in your question. fdvgedr zkgtcscu mzawwgq qyyv rxze ctws inbfs wthbazq xth blxde