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  • gerardoberger 10:46 pm on June 20, 1988 Permalink | Reply
    Tags: 27   

    Distance Measuring Equipment Whilst Conducting a Flight Planner 

    When we found this informative article we were so excited, having searched for over one year for this, discovering it on this blog was an exciting time for me.

    walkie talkie code namesWhat is distance measuring equipment that is used within a flight planner?

    Distance measuring equipment is a transponder based radio navigation technology that measures slant range distance by timing the propagation delay or VHF or UHF 2 way radio signals. Developed in Australia, it was invented by Edward George Bowen while employed as Chief of the Division of Radio physics of the Commonwealth Scientific and Industrial Research Organisation (CSIRO).

    Another engineered version of the system was deployed in the early 1950s operating in the 200 MHz VHF band. The Australian domestic version was referred to by the Federal Department of Civil Aviation as DME (D) and the later international version adopted by ICAO as DME.
    DME is similar to secondary radar, except in reverse. This system was a post war development of the IFF systems of World War II. To maintain compatibility, DME is functionally identical to the distance measuring component of TACAN used within a flight planner.

    Operation
    Aircraft use DME to determine their distance from a land based transponder by sending and receiving pulse pairs. These are two pulses of fixed duration and separation. The ground stations are typically located with VORs. A typical DME ground transponder system for en-route or terminal navigation will have a 1 kW peak pulse output on the assigned UHF channel.

    A low power DME can also be co-located with an ILS glide slope antenna installation where it provides an accurate distance to touchdown function, similar to that otherwise provided by ILS Marker Beacons.
    Distance calculation and accuracy used within a flight planner
    When using a flight planner, a radio pulse takes around 12.36 microseconds to travel 1 nautical mile to and from and it is also referred to as a radar mile. The time difference between interrogation and reply 1 nautical mile minus the 50 microsecond ground transponder delay is measured by the interrogator’s timing circuitry and translated into a distance measurement (slant range) which is stated in nautical miles and then displayed on the cockpit DME display.

    The accuracy of DME ground stations is 185m. Its important to know that DME provides the physical distance from the aircraft to the DME transponder. This distance is often referred to as ‘slant range’ and depends trigonometrically upon both the altitude above the transponder and ground distance from it when using a flight planner.

     
  • gerardoberger 5:30 pm on August 28, 1985 Permalink | Reply
    Tags: 27   

    Now, 2 Way Radios to aid SWM 

    Without giving too much about this 2 way radio q codes article, but I found it fascinating and appropriate to what I’m now doing.

    As part of its efforts to improve and streamline solid waste management (SWM) in the city, the Bruhat Bangalore Mahanagara Palike will soon begin distribution of Walkie Talkies to officials handling the service.

    According to BBMP Commissioner M Lakshminarayana, walkie-talkie handsets will be used to relay messages on uncleared garbage. When members of the public call the BBMP’s control rooms with complaints on uncleared waste, staff will relay the information to the officials concerned via walkie-talkie.

    Interestingly, the plan could cut costs as it does not involve purchase of new equipment. Instead, nearly 300 two-way radios, that are currently used by senior officials or fitted to their service vehicles, will be redistributed to other staff.

    Lakshminarayana explained that currently walkie-talkies were provided to staff of the rank of assistant executive engineers and above. “However, the service was not effective as officials were using mobile phones,” he said.

    “Now, in order to utilise the service more effectively, we are planning to provide this service only to officials working in SWM such as health inspectors, assistant engineers (including ward engineers) and others,” he said.

    Explaining further, Lakshminarayana said 2 way radio handsets given to officials working in welfare, roads and other departments will be withdrawn.

    “These officials do not require this service,” he said.

    He also said because of unnecessary lines, walkie-talkie communication was not effective.

    “All these days, walkie-talkie service was hierarchy-based and given to senior officials. But now onwards, it will be an activity-based service,” he added.

    The Commissioner said he had asked the joint commissioner (Health), who is in-charge of SWM, to provide a list of officials working in the department.

    However, some Councillors are sceptical. A senior councillor from the BJP, who wished to remain anonymous, said “Our officials do not have commitment. If we complain about garbage on the streets to them over phone, they will not make an attempt to clear it.”

    “Now, complaints will be conveyed to officials via walkie-talkie from control room staff. How can one expect them to clear the garbage?,” he questioned.

    Source – http://newindianexpress.com/cities/bangalore/Now-walkie-talkies-to-aid-SWM/2013/11/22/article1904581.ece

     
  • gerardoberger 7:54 am on July 23, 1985 Permalink | Reply
    Tags: 27   

    ICOM partners EU Skills to create dedicated network 

    walkie talkie rangeWithout giving too much about this communication device grants short article, but I found it exciting and relevant to what Im currently doing.

    ICOM (Industrial and Commercial Energy Association) has launched a joint initiative with EU Skills (Energy & Utility Skills) to create growth and jobs through a dedicated Industrial and Commercial Downstream Gas Network.

    Through ICOM, the Network will deliver a wide range of benefits to companies operating in the non-domestic heating industry, promoting and underpinning their growth.

    Ross Anderson, ICOM director, said: “This initiative will harness the expertise and resources of EU Skills to help companies identify and address the key barriers to sustained growth. These include maximising skills of employees, filling skills gaps and tailoring training and evaluation courses to meet the real-world needs of the industry.

    “It will also provide access to partnerships, networking opportunities and information on new business opportunities.”

    Mr Anderson continued: “This is an exciting initiative for the industrial and commercial heating industry. It is probably the first time that Government funding has been made available to provide us with a dedicated platform to achieve the resources, skills and routes to competence that suit our own business needs.”

    All ICOM members are being offered automatic membership of the Industrial and Commercial Downstream Gas Network and ICOM will also facilitate the membership of non-member companies in the commercial and industrial heating sector.

    Chief executive of EU Skills, Neil Robertson, said: “I believe this joint initiative presents significant opportunities for small businesses involved in the network. As the network grows it will attract new talent, develop the skills required and provide the industry knowledge for the benefit of all involved.”

     
  • gerardoberger 7:45 pm on July 22, 1972 Permalink | Reply
    Tags: 27   

    Motorola Two way radio 

    Whilst many of our visitors might be interested in some of our own writing, here is one i discovered while rummaging around ezinearticles it’s far better written than I could ever dream to achieve. Maybe one day I’ll get to their rank, you never know.

    walkie talkie testFor a consumer level Walkie Talkie, I recommend the Motorola MH230R ($47), or for slightly longer range, the MR350R ($54). I lived for several years in the Eastern Sierra where we used these for hiking. Usually they were good for 2-3 miles over mountainous terrain, and of course much further if users were in line of sight. I know from personal experience they are good for at least 11 miles as I used them to talk with my wife via a direct line-of-sight. But while they are rated for 23 and 35 miles respectively, for practical purposes, I’ve never relied on them unless we were within a few miles of each other, with no major obstructions. You can also use them for NOAA weather. They’re light & cheap enough to be practical, require AA batteries (rechargeables work fine) and are durable. On some hikes we’d have 5 or 6 deployed, carried by hikers of varying speeds, so we could keep tabs on where everyone was, and for that purpose they worked rather well — not perfect, but mostly good enough. If you’re within a few hundred yards of another radio, they always worked, even around large obstacles.

     
  • gerardoberger 8:11 pm on December 10, 1971 Permalink | Reply
    Tags: 27   

    Why 2 way radios Could Make a Comeback 

    This article is posted by the strict consent of midland xt22 2-way radio.com, that is the original blog. please get agreement from that site before reposting this article.

    The advantages of the latest two way radio gadgets are substantial. They cannot be replaced by any other gadgets because of the specific benefits they offer. Two way radios have maintained their value despite much technological advancement which has led to the emergence of tablets and smart-phones. Let’s discuss the benefits of using a two way radio gadgets over some of todays “newer” technologies.

    Disaster response
    In case of a major disaster, they may be the best gadgets to communicate with since they may not experience any overload. You can use a two way radio to offer help, give out warnings and even look for your loved ones. Try using a cell phone when towers are down and signals are blocked by interference. Good luck.

    Quick task or schedule changing
    You can effectively integrate the devices if you run a business. You can use it to assign projects as they occur, reschedule or delegate work to your staff easily and promptly. This reduces backtracking and the time it takes to locate workers which can lead to an increase in productivity.

    Improved efficiency
    You can two Way Radios to communicate with many people at the same time without speaking to them individually. This is beneficial as it saves time and reduces the possibilities of delays. Improved efficiency lowers the incidence of misunderstanding as well as the consequent errors.

    Low operating costs
    You do not have to purchase airtime to use them since there are no per-minute charges. Once you purchase the gadgets, they will keep giving you the service you need implying that you can save on maintenance and mileage costs. Thus, you will save a lot of money in addition to using them for various leisure activities and profitable ventures. No more saving your minutes for emergencies.

    Instant access
    Everyone with the gadget and within the range of a repeater can hear your messages clearly. You will not have to look for a number to communicate with anyone who has the radio. All you have to do is press a button and your message will be received by everyone within that specific frequency. Moreover, you will not have to wait for other people after pushing the talk button and it will reduce the go-between-time as with a cell phone you must wait for a call to connect. Did I mention no dropped calls?

    Faster response
    Two way radios will allow you to communicate with people faster and easier since they are required (assuming you’re using for business use) to carry their gadgets all the time. You may request a faster response from a person if the go-between time is short. With this, you will communicate your message faster and get a response within seconds.

    Easy to use
    The radios features are simple and easy to use. The user is required to press a specific button to communicate with other people. Since the gadget is specifically designed for communication, it lacks other additional features which make it easier to use, and less distracting.

    Stronger signal catching
    Their signals are very strong allowing people to communicate more frequently. The signal-range allows both the transmitter and the receiver to stay connected. Some (consumer) two way radios offer ranges as far as 30 miles. You can literally talk to someone across town with a two way radio.

    Recreational purposes
    This is the fun part of these gadgets. They are used by family and friends to stay connected whilst camping, hiking or during road trips.

    Commercial and security uses
    The 2 Way Radios are used in radio centres for signal checking and data transmission activities. They are also commonly used in military camps where communication is crucial. Army men are expected to stay connected with the main camp for any necessary updates. These gadgets maintain the connection between them keeping everyone updated all the time.

    Two way radio gadgets from two way radio shop have many of the benefits explained above. However, remember to carry several extra batteries when going for a long vacation since their batteries can’t be recharged. Or purchase a set with a built in battery. So, give it a try and see if it works for you.

     
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