qra locator map. K3NG Keyer; K3NG rotator Ethernet; K3NG rotator for HAM IV; K3NG rotator universal interface; Arduino and SIM800L; Station météo; HX711 mesure de poids; Economiser de la SRAM ! Arduino & SIM900; Arduino et mesure de tension; USB audio interface; Wintest;. qra locator map

 
 K3NG Keyer; K3NG rotator Ethernet; K3NG rotator for HAM IV; K3NG rotator universal interface; Arduino and SIM800L; Station météo; HX711 mesure de poids; Economiser de la SRAM ! Arduino & SIM900; Arduino et mesure de tension; USB audio interface; Wintest;qra locator map  AOR, YAESU, COMET

It will give you directions for your antenna (or beam headings as they're known) but it will also do something else for you. In accordance with Google Safe Browsing and Symantec qra-locator-map. 77. In the meantime it had become very<br />. The main reason is pure convenience. Entering a QTH locator in the search box will move the map to the. QTH Locator maps . - search by address, location. BamiPorto. You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. Latitude and Longitude in Decimal Degrees and Altitude in meters. Poiché la lunghezza dei meridiani è costante mentre la lunghezza dei paralleli varia con la latitudine, i rettangoli non hanno tutti le stesse dimensioni. . In the 70s, this system was widely used. Radioamateurs du Dpt. plate carrée projection, Mercator or other) between 80°N and 70°S latitudes (or 90°N and 80°S: refer chart at Ocean Teacher’s Ocean Geography page) into grid cells of 10° latitude by 10° longitude, each with a. HTF. HTF. Source: Site F5AIB. DR2W. Summaries 144 MHz in Europe. 00. Search. The scale is 1 - 10, with 1 being poor and 10 being excellent. Quantitative risk analysis (QRA) is a technique for quantifying the risk that a particular process or operation poses to an individual and population. 10,120 MHz = 14,07 m. The gateway appears on APRS cards with . The map contains data for the last 15 minutes. Sporadic-E clouds. READ IMPORTANT NOTE BELOW. Region 3 — the rest of Asia and the Pacific. eg. Get Acrobat Reader to view PDF files. 281). You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. - 8 character Maidenhead conversion with mouse moving. (Magenta needle) The Square and the Subsquare are drawn as well for your. The next segment to the east has the letter 'Y' and its centre is 90 West. Argus. The Maidenhead Locator System is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. 77. There are currently 1338778 stations and 32274 squares in the database. The first section is fed at its end and resonates on the highest band (shortest wave length), the 20 m. (by EI8IC)European QRA Locator Map (V3) for Radioamateurs, ideal for the shack. The Grid Square Locator, also known as the Maidenhead Locator System, is a geographical co-ordinate method based on a 6-digit code, widely used by amateur radio operators to determine a rough position on the Earth. Summaries 144 MHz in Europe. Other Ham Radio / Amateur Radio pages by K2DSL on Levinecentral. You can zoom the map with the help of the mouse wheel or the control on the upper left part. NDB: 316 "UTI", 252°/4. speaker/headphones without using browserFor example, QRA locator map for VHF/UHF contest. EZ QRA Locator updated - The EZ QRA Locator softawre is a simple software for the calculation of QRA locators [ Hits: 4268 | Votes: 54 | Rating: 5. It will open a Google map centered on locator. Great circles qra locator map. This link is listed in our web site directory since Sunday Sep 5 2010, and till today " SK6AW Maidenhead Locator Conversion " has been followed for a total of 1133 times. K3NG Keyer; K3NG rotator Ethernet; K3NG rotator for HAM IV; K3NG rotator universal interface; Arduino and SIM800L; Station météo; HX711 mesure de poids; Economiser de la SRAM ! Arduino & SIM900; Arduino et mesure de tension; Kicad; USB audio interface; Search; LoginQTH/QRA Locator Program for the y Fuller 8?z C8 1 If you are going /A or /P on holiday or DXpedition you are able to work out all possible QRA locators, or draw the QRA squares on a map, from the information derived from Program A. The place is secluded and the bunkers are much overlooked by the locals, who keep on the main. Internet Explorer does not admit floating frames or it's not configured to show them. flat earth's curvature. The Maidenhead Locator System (a. Imp. Finally comes the rest for the 40m, so 20,20 m - 14,07 m = 6,13 m. Step 1: List of Materials. Find a locator: or use. 20. Example with the KH6M station operating from Florida, from EL96 locator. The shapes of the borders are not exact, but the map enables you to get an impression where the grids are. DX-Sherlock - QSO real time maps and listings - Shows QSO and SWL in real time, taking data from many different sources (DX-Cluster, WSPR, Reverse Beacon). - Ajustable output level, max around 100 mV pp on 600 Ohm, or 35,4. Our full-vector export for locator maps also includes shaded relief. In the next column is the reference call sign (the core of a slashed call, ie. Salons-Concours etc. Argus. New and updated data is shown on the map in real time without need to reload or refresh the page! Tracking data is stored in the database for six months. Virtual radar tracking. It runs under the main versions of Windows. Maps. WW locator : JN42le38 Altitude : 1511 m 16 QSO 40/20 CW- 1 S2S. General information include capital of South Africa, currency and conversion rate of South Africa currency, Telephone Country code, exchange rate against US Dollar and Euro. Location in the Johannesburg area. 09:00:29, TREKANTEN TEMP QTH. This link is listed in our web site directory since Sunday Dec 25 2005, and till today " Great Circles & QRA Locator Online " has been followed for a total of 3717 times. Once the HAAT value is obtained, it must be converted to feet (feet = m x 3. 77. 89/10. 281). On-Line database of VHF & up QSO. CONVERTOR by TK5EP (2014-2021) CONVERTOR written by Patrick EGLOFF TK5EP Move the mouse over the map and this page will show you latitude and longitude coordinates in WGS84 (both decimal and DMS), UTM as well as Maidenhead format. Its main use is for transmitting the geographical position of stations. Add to cart QSL Cards. Entering a QTH locator in the search box will move the map to the. The grid locator system is one of the many peculiarities that characterize the amateu. Click on the map to select a grid square, or, enter desired location. . More information on how to create your own application, use hi-res picture or include WRC in other applications will followEuropean QRA Locator Map (V3) for Radioamateurs, ideal for the shack. Runways: ca. Inspection of a QRA locator map will show that the most westerly locator likely to be encountered (on the west coast of Eire) will contain the first letter 'U'. The QRA amplitude A ˜ 7 ≈ (4. Argus d'avril 2020. Argus d'avril 2020. Advanced Member. About this app. Michael gave his QRA locator as KN20HS. Grid Locator Intro Home > Ham Maps > Grid Locator > Intro • This page introduces the world Grid Locator system, and discusses how to find out what your own Grid Locator is. A live and interactive map of coronavirus (COVID-19) cases in Victoria, by local government area. Entering a QTH locator in the search box will move the map to the. About this app. Maidenhead Locator Squares By John Desmond, EI7GL What is a Locator Square? If you are new to radio or the VHF bands, you may not be familiar with locator squares. Lamination Reference QRA_Monde_2. Amateur Radio Ham Radio Maidenhead Grid Square Locator Map. More information on how to create your own application, use hi-res picture or include WRC in other applications will follow. I strongly suggest downloading your maps before being on site. The data values for power, height, gain, dir can be converted using the table below, or they can be calculated: power = the square root of your power. We would like to show you a description here but the site won’t allow us. These sub-squares are 5 minutes by 2. (Note: The images online are not in HD to avoid slow loading pages. Enter with no spaces between characters. The risk is calculated for the potential for safety, environmental or financial. phone +44 (0) 1234 832700 Fax: +44 (0) 1234 831496New and updated data is shown on the map in real time without need to reload or refresh the page! Tracking data is stored in the database for six months. New and updated data is shown on the map in real time without need to reload or refresh the page! Tracking data is stored in the database for six months. The main reason is pure convenience. Last modified 2022-10-20. This free PDF file contains two Worldwide grid square maps. Country List. You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. This brochure map of Quadra Island is readily available on Quadra Island and at Visitor Information Centres across Vancouver. Right click for more options. You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. Summaries 144 MHz in Europe. Esempio il QTH locator di Savona (Italia) è JN44FH. program to make Great Circle maps from any location. Resources listed under Grid squares category belongs to Operating Aids main collection, and get reviewed and rated by amateur radio operators. GcmWin Great Circle Map. 2023 / 01:09. HTF. What is a QRA-locator? The original QRA-Locator system, devised in Germany and adopted by the VHF Working Group in The Hague in October 1959, was based on geographical longitude and latitude using a grid with an origin of (0°W, 40° N) to provide coverage of Europe. 39-41MHz 8m. 6 NM to field; In the 1970s. QRA-Locator project management toolbox pdf download map, while at the Region 1 Conference in. - display of the grayline with permanent updating. QRA-L ocator map, while at the Region 1 Conference in Scheveningen the system was re-baptised with the more appropriate name QTH-Locator. Log In. . LINKS. I therefore modified my scripts to use the Openstreetmap maps which are beautiful and detailed. QTH Locator and IARU Locator) is a geographic co-ordinate system used by amateur radio operators to succinctly describe their locations, which replaced the deprecated QRA locator that was limited to European contacts. 10,120 MHz = 14,07 m. At the<br />. And in its final form the QRA-Locator consisted of a five-character code, viz. On the map below you can see schematic location of the sectors on continents. Assess the failure frequencies and probabilities of all LoCs. Maidenhead Locator Squares By John Desmond, EI7GL What is a Locator Square? If you are new to radio or the VHF bands, you may not be familiar with locator squares. Based on a work at this link. 1) Create a new device using the "Create a new device" button and select "Connector'. Maidenhead Locator Latitude Longitude. Karten / Maps. Imp. It is a collective task and involves the continuous presence – 24 hours a day, 365 days a year – of fighter aircraft and crews, which are ready to react quickly to possible airspace violations. The last QRA locator map no longer uses any API functions or Google maps. Return. 00 HTF offer : two radio amateur wall maps with a choice of options and sizes. This help content & information General Help Center experience. The satellite is in geo-stationary orbit above the equator at 26 degrees East. PDF file can be enlarged and scaled to A3 and. The last verification results, performed on (June 05, 2023) qra-locator-map. Booster step-up module. AOR, YAESU, COMET. Map For Ham by Diego, IU1FIG, an incredible map application rx-tx. AA to RR. You must at first set your home location ! To do this, move the cursor to your home location, click on the map and a dialog box will open. gridlocw grid locator for windows in the pascal-based environment of delphi. From that we can calculate the power range that we can measure and still be within the linear range of the AD8307. It uses a string of two capital letters, two numerical digits and one lower case letter to mark an area of two degrees longitude by one degree latitude. New features have been added, such as: - search by QRA locator on 6 or 8. Line 5: Last APRS station received Line 6: Battery charge status. Interactive map with the position of amateur radio repeater bridges and more: Connect your PC to DMR,Yaesu Fusion, Dstar, M17, P25, NXDN: Connect your Mobile Phone to DMR,Yaesu Fusion, Dstar, M17, P25, NXDN: Qatar Oscar 100 Narrowband Websdr: TK5EP's QRA locator (and more) map Maidenhead Locator System. flat earth's curvature. The Maidenhead Locator System can describe locations. €43. QRA locator map; Carte RS Europe; Circular SWR ruler; APRS; Arduino. com The Maidenhead Locator System (a. You can use this handy tool to look up your stations gridsquare, or the gridsquare of that rare DX station you just worked. You can change it using Ctrl-R. QRA locator map; Carte RS Europe; Circular SWR ruler; APRS; Arduino. You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. Or make a long click on the map at the place of interest. TK5EP's QRA locator (and more) map. They are embedded within the Swanwick Centre run by NATS, the UK’s main civil air services provider. Great circles qra locator map. Tools. See more of F5JTM radioamateur on Facebook. The gateway appears on APRS maps like . So far received 5 votes for a total score of 4. QRA locator map; SCP maps. QRA-L ocator map, while at the Region 1 Conference in Scheveningen the system was re-baptised with the more appropriate name QTH-Locator. com in a single category. You can also manually enter the Home and DX locators by hand by clicking on the same icons on the upper part on the page. Use. 24. uk. 2) In the same way, create a new device by selecting "TcpClient". Other stuff. The last QRA locator map no longer uses any API functions or Google maps. John Morris, G4ANB, originally devised the system, and a group of VHF managers, meeting in Maidenhead, England in 1980, adopted it. DXCenter DX Cluster - Online world map with live updates from the DX Cluster network, displaying new spots on the maps as they appear. 50-52MHz 6mThe Maidenhead Locator System replaces the older QRA locator system with one that is usable outside Europe. QTH Locator and IARU Locator) is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. a. Displays your current QTH Locator via current GPS coordinates. Karten / Maps. 3. Queensland Fire and Emergency Services has an interactive map of Queensland on their website with information on current incidents and the level of warning in each location:. Rand Airport (QRA) located in Johannesburg, Gauteng, South Africa. 00. . Originally, digital transmission was carried out using the Packet radio. Grid square: Locality: Country: Enter 6 character grid square or Enter locality or Click on the map! AD. Maps. QRA-Locator – Map of Europe 1965 – IARU R1 The QRA-Locator consisted of a five-character code with two capital letters, a two-digit number and a lower-case letter, for example AB55m. Add to cart HAM Wall Maps. Leaflet | Map tiles by Carto, under CC BY 3. "QTH locator", the old name "QRA" will be used here to avoid confusion with locator systems in general. 5' respectively, the longer string being more precise. Maidenhead/QTH Grid Square Locator - K7FRY. About Dx-cluster map The resource is currently listed in dxzone. The last QRA locator map no longer uses any API functions or Google maps. This means Royal Air Force crews are on standby 24 hours a day, 365 days a year, and ready to react at a moment's notice to reach a threat within minutes, no matter the location within or just outside the. €13. height = ln (HAAT/10) (ln = log neperian) In both cases, choose the closest value. Repeater and BC frequency lists. OF_1. Entering a QTH locator in the search box will move the map to the. re-baptised with the more appropriate name QTH-Locator. However, this ambiguity is unlikely to be a nuisance to. height = ln (HAAT/10) (ln = log neperian) In both cases, choose the closest value. Maps. Line 5: Last APRS station received Line 6: Battery charge status. K3NG Keyer; K3NG rotator Ethernet; K3NG rotator for HAM IV; K3NG rotator universal interface; Arduino and SIM800L; Station météo; HX711 mesure de poids; Economiser de la SRAM ! Arduino & SIM900; Arduino et mesure de tension; USB audio interface; Wintest;. Don’t worry it’s easy to find out if you don’t know it. The typical procedure to perform a QRA consists of the following steps: Identify relevant activities, units, and processes. Its main functionalities are : - calculation of QRA locator from geographical data (latitude et longitude) - "Save" function of the QRA locator of the. Entering a QTH locator in the search box will move the map to the. Calulate locator,etc. - display of the grayline with permanent updating. 281). TK5EPs QRA locator map version 1. €13. Adjust setting as shown, enter your location or QRA locator, then press Create Map. You can zoom the map with the help of the mouse wheel or the control on the upper left part of the map. Property. This link is listed in our web site directory since Wednesday Jan 8 2020, and till today "Interactive Ham Radio Locator Map" has been followed for a total of 1338 times. Imp. It is primarily intendend to be used on the lower bands 160m, 80m, 40m. Displays your current QTH Locator via current GPS coordinates. / OSM / Profile ZL: 7. Interactive map with the position of amateur radio repeater bridges and more: Connect your PC to DMR,Yaesu Fusion, Dstar, M17, P25, NXDN. Clear searchQTH en GPS Locator. (Max AD8307 input = + 10 dBm) + 53 dB = 63 dBm = 2 kW. The Maidenhead Locator System is a geographic co-ordinate system used by amateur radio operators. Its purpose is to be concise, accurate, and robust in the face of interference and other adverse transmission conditions. QRA_V1. There have been several evolutions since, with a peak activity of a dozen repeaters ! By now, only 5 are currently active. Inside (click to enlarge)Quick Reaction Alert, known as QRA, is a state of readiness and modus operandi of air defence maintained at all times by Nato allies. It has been developed for a course on Visual Basic as an example. From now on, the Leaflet API and free basemaps are used. You can zoom the map with the help of the mouse wheel or the control on the upper left part. Use of the terms QTH. Per trovare il tuo QTH locator, è sufficiente fare clic sulla posizione dove ti trovi. Use of the terms QTH locator and QRA locator was. 77. 5 minutes. Once the HAAT value is obtained, it must be converted to feet (feet = m x 3. KH6/OK2CQR). gridlocw grid locator for windows in the pascal-based environment of delphi. NATO Air Policing: securing Allied airspace. You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. Antennas_manufacturers About Rtty mode Audio Recording Amplifiers Antennas Satellite Amateur Television ATV Aprs software Beacon Band Plan Ham Radio Capitals Europe DX cluster softwareAdjust setting as shown, enter your location or QRA locator, then press Create Map. €12. It is administered by G8JNJ. New and updated data is shown on the map in real time without need to reload or refresh the page! Tracking data is stored in the database for six months. The main category is Grid square locators that is about Amateur radio grid squares. Geog is a suite of programs written by Andy Talbot. The transmit frequency can be the same (simplex) or different (duplex) from the receive frequency. RAF Aerospace Systems Operators at RAF High Wycombe and Air Traffic. You can also use this service to find your QTH/QRA locator (or your grid square) by simply pointing at a location on the map. Democratic People's Republic of Korea – See Korea. Calendrier REF 2023. QRA locator map - Rain Scatter map - et plus. eg. QRA locator map; Carte RS Europe; Circular SWR ruler; APRS; Arduino. Geog UK terrain heights. A locator is essentially a map reference, allowing the position of a station to be easily and concisely transmitted. Interactive map with the position of amateur radio repeater bridges and more: Connect your PC to DMR,Yaesu Fusion, Dstar, M17, P25, NXDN. You can zoom the map with the help of the mouse wheel or the control on the upper left part. QRA locator map - Rain Scatter map - et plus. Address Radio Society of Great Britain 3 Abbey Court Fraser Road Priory Business Park MK44 3WH United Kingdom. Add to cart HAM Wall Maps. Please consider donating to help keep this page active. Maps. Das QTH (ausgesprochen als „kyoo-tee-eych“) ist eine Abkürzung für „Location“ in der Funkkommunikation und wird oft in Verbindung mit dem Locator -System verwendet. Old QRA locator: Show © OK1ZIA 2015OK1ZIA 2015Great Circles & QRA Locator. Telnet access to DX Clusters and Reverse Beacon Network (RBN) CW, RTTY Skimmer: dxcluster. On-Line database of VHF & up QSO. Without repetitions the system covered the area 0-52 degrees Eastern longitude and 40-66 degrees Northern latitude. Geog is a suite of programs written by Andy Talbot. Distributeur Matériel OM. eu) A valid contest QSO The Maidenhead Locator System (a. Burma – See Myanmar . €13. Home‎ > ‎ . The United States usually refers to Quick Reaction Alert as 'Airspace Control Alert'. AOR, YAESU, COMET. Great circles qra locator map. height = ln (HAAT/10) (ln = log neperian) In both cases, choose the closest value. 281). Sporadic-E clouds. Klik hier voor full screen. 0. Civilian airport with QRA loops / lanes at the runway and individual hardstands. All bands and modes are count for the award. Define Loss of Containment scenarios (LoCs) Assess the consequences (both effects and damage) for all LoCs. / Position MyTempQTH. K3NG Keyer; K3NG rotator Ethernet; K3NG rotator for HAM IV; K3NG rotator universal interface; Arduino and SIM800L; Station météo; HX711 mesure de poids; Economiser de la SRAM ! Arduino & SIM900; Arduino et mesure de tension; USB audio interface; Wintest;. a. During programming, the PROG jumper. You don't have to use a hi-res picture, it will be scaled to 600x600 pixels anyway. Based on a work at this link. GridLocW - a Lat/Long. This Winkeyer is intended to work with logbooks and/or contest management software. <== click in profile to relocate map / identify obstacle. Each projected coordinate system, such as "Universal. It is certainly not necessary, but preventing is better than curing !. HTF. No need internet access or mobile. gin" of the system (ie the southwest corner or AA square) is 400 N, 00 E. You can enter a grid square (up to 10 digits) to see the location, or you can long click (0. QTH Distance Map Europe. Geog is a suite of programs written by Andy Talbot. Prévision propagation VHF- UHF Europe. Assess the failure frequencies and probabilities of all LoCs. The main category is Live DX Cluster Maps that is about DX Maps. QTH-Locator-Systeme wurden von Funkamateuren entwickelt und werden im Amateurfunk im UKW-Funkverkehr und. This app assumes that by default your device reports. 00/10. Latitude and Longitude geographical coordinates into Maidenhead Grid Square. RTS and CTS are left. So far. We used the QRA detection scheme of Kornhuber et al. HAM Wall Maps Special Offer. Satellites, moon and space. " If you have your exact latitude and longitude entered, you can click the "up" arrow to populate the grid into the locator field. It will give you directions for your antenna (or beam headings as they're known) but it will also do something else for you. To successfully run the application, you must give your device permission to determine your location, turn on GPS. XBS-TELECOM. This was the QRA-Locator system, devised in Germany, originally based on a two-stage sub-division of geographical longitudes and latitudes starting from the Greenwich meridian and from 40 degrees North. . This may be old news, but stumbled across this QRA Locator map today CONVERTOR by TK5EP (2014). 281). Zum Beispiel könnte jemand in einem. You don't have to use a hi-res picture, it will be scaled to 600x600 pixels anyway. Reference QRA_V3. It runs under the main versions of Windows. 2) In the same way, create a new device by selecting "TcpClient". It is administered by G8JNJ. Entering a QTH locator in the search box will move the map to the. 11. In the next column is the reference call sign (the core of a slashed call, ie. Right click for more options. This link is listed in our web site directory since Monday Aug 8 2011, and till today "QRA Calculator" has been followed for a total of 730 times. General information about South Africa where Rand/Germiston Airport is located in the city of Johannesburg. The total attenuation is therefore 27. This link is listed in our web site directory since Sunday Nov 25 2001, and till today "EZ QRA Locator" has been followed. This link is listed in our web site directory since Wednesday Jan 8 2020, and till today " Interactive Ham Radio Locator Map " has been followed for a total of 1336 times. [1] Maidenhead locators are also commonly referred to as QTH Locator, grid locators or grid squares, despite having a non-square shape on any non- equirectangular cartographic projection. QRA-L ocator map, while at the Region 1 Conference in Scheveningen the system was re-baptised with the more appropriate name QTH-Locator. On the plate carrée projection, the grid cells appear square; however, if the. New and updated data is shown on the map in real time without need to reload or refresh the page! Tracking data is stored in the database for six months. Email: [email protected] by GoogleChrome. nl BamiPorto. Rerun the NØUK Maidenhead Grid Distance & Bearing Calculator. WW LOCATOR GRID SQUARE QTH FOR HAM RADIO -IZ3MEZ. Don't be bothered by the Google warning window at startup,. As a radio transmitter or receiver location system the QRA locator is considered defunct, but may be found in many older documents. - search by address, location. For example, QRA locator map for VHF/UHF contest. See also World , Canada&Alaska, USA , Central America, South Amerika, South Africa , Afrika, NorthAfrica , Europe (small), Europe (big) , Germany (small), Germany (big), former USSR, South Asia, Australia&SEAsia . The IARU Locator (also known as the QTH Locator or Maidenhead Locator System) is based on a division of the globe, by latitude and longitude, into an 18 x 18 grid with origin (AA) at (90°S, 180°W). This was the QRA-Locator system, devised in Germany, originally based on a two-stage sub-division of geographical longitudes and latitudes starting from the Greenwich meridian and from 40 degrees North. SU338855). Find local businesses, view maps and get driving directions in Google Maps. Calulate locator,etc. PI1DAF, 2019-06-08 10:29:27, Almere FlevoLand NL. It represents a location on the surface of the Earth, within the context of a separately specified country or territory. 6 ] GcmWin : Great Circle Map pop - GCM is a freeware great circle map plotting software for windows, you can choose colours, scale, meridians, fields and or squares from the maidenhead locator system. HTF. Inspection of a QRA locator map will show that the most westerly locator likely to be encountered (on the west coast of Eire) will contain the first letter 'U'. 5 ± 1. Did the 4-41 (1-41 after Sept 1972) have several QRA sites in the late 1960s (Mutlangen, Nellingen, Hornberg)? 3.