Dx propagation software above 50

In order to support the study, i developed a wspr continue reading. Space weather now noaa space weather prediction center. I wanted to be sure that the extra elements would not have any detrimental effects on the performance on 80m. If you hear a beacon that is shown as off the air above, or if you hear a beacon that is malfunctioning in some way, please let us know. Click on the map and the spots with the callsigns will be listed and is clickable. Sponsored by dx engineering, arrl the doctor is in is an informative discussion of all things technical. Today, another good opening to australia was recorded. The end result for today was, the 4080m fan dipole is resonant without an atu on both bands and works very well on my first test. True 6meter dxers spend about 5% of their time transmitting while 95% of time is spent listening and observing changing band conditions and propagation modes. One major reason for this is that the d layer, which absorbs hf signals, disappears rapidly on the sunset side of the grey line, and it has not yet built upon the sunrise side. Jones, md, phd ae4tm department of physics and astronomy. Irregular terrain model itm longleyrice 20 mhz 20 ghz if77 wave propagation model gierhartjohnson airground. It uses data gathered by automatic packet reporting systeminternet service aprsis from packet stations in the amateur radio service. The propagation looks open with signals at night 40 db higher than at.

Arrl propagation forecast bulletins ac6vs ham and dx reference guide df5ai amateur radio propagation studies excellent page, features beamfinder software. Part i larry jacobson k5lj with assistance from rick hiller w5rh no way you say. It is our mission to enhance your radio operating and monitoring experience by making it easy and fun to enter your loggings, record audio archives of the stations youve worked or heard, and maintain a digital repository of your treasured qsl. Notes as of june 20 the new region 1 european band plan, that came into effect on 1st january 2012, is largely being ignored by the vhf community, as all data modes in europe were recommended to move above 50. Voacap is for pointtopoint predictions one transmitter site to one receiver site. Send formated dx spots indicating clearly both locators and the type or propagation. While line of sight propagation is a primary factor for range calculation, much of the interest in the bands above hf comes from use of other propagation modes. This website uses cookies to personalise content and ads, to provide social media features and to analyse our traffic.

The dxrobot is a free and strictly noncommercial service to the vhf ham radio community automatic eskip alerts dont want to miss 144 mhz sporadic e openings. Hf propagation tutorial, nm7m on this web propagation studies, rsgb. Institute for telecommunication sciences resources radio propagation software radio propagation software. The author wishes to thank james secan, senior research scientist, retired, of northwest research associates, inc nwra for his continuing efforts to keep the space weather indices summary 1 server online. Voacap voice of america coverage analysis program is free professional highfrequency hf propagation prediction software from ntiaits, originally developed for voice of america voa. There is little doubt that worldwide dx will become common on 50 mhz over the next four years. The above is a rough guide to where they occur, and each reception you have of that far dx station they are changing.

Tropo tropospheric signals happen in the part of the atmosphere close to the surface and up to about 25,000 feet or 7,620 meters. If youre just getting started in the hf hobby, ae4rvs propagation primer is an excellant place to start. The rest of information is useless and it doesnt interest anybody. The reference above is reproduced by kind permission of edwin c. Voacap can produce colorful graphs, although these arent really useful for dx planning. It is real time, but you must manually refresh this page. In this program, predictions are most accurate with lineofsight radio paths see also propagation over lineofsight radio paths and single hops of ionospheric paths. Hf propagation overview acknowledgement for the realtime effective solar sunspot number ssn e. The chart screen is the output window for the pointtopoint prediction from your home qth to the dx qth. Articles on sporadic e and 50 mhz radio propagation. On may 20, 2003 radio amateurs from the canary islands reported many 144 mhz qsos to central europe and england corresponding to radio path lengths of 3. I put a video together operating on 80m using 50 watts during a rsgb 80m contest. Radio propagation along the grey line is very efficient.

Hf shortwave radio propagation information, black cat systems. Also works in conjunction with dx atlas and ionoprobe, both shareware programs also by ve3nea radio mobile deluxe freeware program by ve2dbe allows you to visually see your vhf and above networks, or see how your antenna pattern over the ground is. Vuhf qso real time maps dx sherlock william hepburns vhfuhf tropo forecasts. The amateur radio propagation studies webpage features the world of unusual. Dx toolbox shortwave ham radio hf radio propagation. Line, as utilised by ham radio operators over the world. Dx list for hams wishing to receive dx information via email.

Dx toolbox propagation software, black cat systems. Jones, md, phd ae4tm department of physics and astronomy, university of tennessee, knoxville, tn 379961200. Propview uses the included ioncap propagation prediction engine to forecast the minimum and maximum useable frequencies between two locations over a specified 24 hour period. Dx list archives solar terrestrial activity report the dx. Repeaters arent the only ways to span long distances in the world above 50 mhz. Please remember in europe that french operators are not allowed below 50. The propagation logger is for vhf propagation reports or alerts only. Mufday assessments in place for all hf propagation prediction tables, resulting in even better predictions on above themuf frequencies. Search the dx summit database or the reverse beacon network for beacon spots.

For the uk 50 mhzes propagation favours stations located furthest south, however openings for northern based stations do occur, but interestingly often an hour or more later than for stations in the london area. Amateur radio propagation conditions in the united kingdom uk. Propview interoperates with commander and dxview to automatically qsy your transceiver to hear each beacon in your schedule, and to display the location of the current beacon. This link is listed in our web site directory since saturday jul 3 1999, and till today rf prop has been followed for a total of 40088 times. Vhfuhf openings happen sporatically and you cannot predict them as well as hf propagation. Dxtb predicts no reception possible in europe and canberra is in the silent zone. The a index low is good the k index low is good 3 or more is bad. There are lots of statements about 160 propagation and they arent simple or the same for every location on the planet. Each article now shows the solar flux range for the month reported. This map uses 6 meter spots to compile its 50 mhz propagation map.

This page is a reflector of the five other propagation loggers on this site. For those who dont know, thegrey line is a band around the earth that separates daylight from darkness as the earth rotates. Dx as relating to amateur radio contacts over paths in excess of miles in the highfrequency bands 3. First, you need to put the following frequencies in sequence low to high into your radios memory for.

Mar 17, 2017 another antenna placed about 20 feet above ground worked very well and helped him score a singleoperator unlimitedpower plaque with just low power. The maximum usable frequency muf is the highest frequency that, with a probability of 50 % of the time, can be used for radio communication between two points at a specified distance but not necessary in all directions via refraction by the ionosphere. The main category is propagation tools that is about propagation prediction software for ham radio. At the same time, 144 mhz sporadic e qsos as well as tropospheric dx propagation. We also share information about the use of our site never private information with our social media, advertising and analytics partners who may combine it with other information that you have provided to them or that they have collected from your use of their services. I dx takes on a different meaning in terms of distance when we consider the vhf 30300 mhz, uhf 3003000 mhz or microwave parts of the amateur spectrum. Joachim ct1hze has managed the majority of dx qsos on june 5, 2007 see the. Vhf propagation map this map shows realtime radio propagation from stations operated near 144 mhz. Since 1995, dxtreme software has been producing powerful and easytouse logging applications for all kinds of radio enthusiasts. This workinprogress guide should get you well started with the software.

High resolution snr signalnoiseradio maps which are in pseudo color. Please leave messages relating to general skip openings and propagation alerts. Usable hf frequencies page refreshed every 20 minutes use the indicated color red, yellow, green, blue, white, etc. Software, data and validation examples for ionospheric and. For the discussion on the 11 meter band propagation 25. And what is the perceived wisdom of dx propagation on 160. These links explore several sites, and software, that can be used to help predict how a hf signal will propagate. During the northern hemisphere summer es season the use of 50. I dont want you to stress too much about radiation angles. With low power it is possible to work all over europe via single hop or as far as israel and cyprus via double hop propagation. A propagation logger is an interactive webpage for dx reports. Dx toolbox searches the web for you, gathering information on solar and geomagnetic conditions that affect radio propagation. Hf propagation prediction is a statistical science.

The is your source for news about amateur radio, shortwave, cb radio website. We provide you with the latest news and videos straight from the amateur radio world. Here is a good way check the propagation and muf to dx in less than a minute using the northern california dx foundation world wide beacon system. In order to not cause qrm to each other and permit the most efficient use of ft8 for weak signal dx working, it is highly desirable for all stations to operate. For propagation topics above 30 mhz, please see our dxing above 30 mhz article. Dxscape tnx ja4pxc webbased dx cluster with live links to dx web pages. First, you need to put the following frequencies in sequence low to high into your radios memory for cw. Dx list archives solar terrestrial activity report the dx notebook. There are currently sections on vhf and above radio wave propagation, including educational material. Use your call sign or name, location, and frequency when leaving information.

The dxrobot can send you automatic realtime 144 mhz eskip warnings via email or via sms to your mobile phone. Any white bubble indicates no suitable frequency or high absorption. Voacap propagation planner is a comprehensive planning tool for hf contesters and dxers. Dx toolbox propagation analysis and prediction program iii propagation map. Above propagation conditions to europe as seen from australia canberra on 20 meters for september 2004 at 0700 utc ssn 27, sfi 85. We also share information about the use of our site never private information with our social media, advertising and analytics partners who may combine it with other information that you have provided to them or that they. Transmissions with jt mode were used to collect spots and create datasets. Make sure you have dx atlas installed, then press the dx atlas button on the settings tab. Voacap produces lengthy tabular printouts that require a lot of interpretation and massaging. A portal that hams think of as the first place to go for information, to exchange ideas, and be part of whats happening with ham radio on the internet. There are two seperate alert systems, one for europe and one for north america. Click on the callsign for their detailed information. The efficiency of most antennas exceeds 90 percent, which for the purpose of estimating received signal strength can be ignored.

In a number of cases, a peak is observed around 19. Ace animated communications effectiveness provides hf ham radio propagation predictions for the 1. Dx toolbox propagation analysis and prediction program iii. Emphasis is on the seasonal effect on dx propagation at current levels of solar activity. Review of propagation prediction programs voacapbased. It provides a large 2500 x 1800 pixel screen map of the world which displays calculated results from sophisticated models, dx data and other sources of information hits. How hf signals get from here to there, ingram k4twj, cq 2008, mar. Vhf and uhf can be affected by the following conditions, though. Propview uses the included voacap, icepac, and ioncap propagation prediction engines to forecast the minimum and maximum useable frequencies between two locations over a specified 24 hour period. Built in to the programme there is always a considerable amount of data that has been gained over many years of research.

The ham bands are shown as green horizontal dotted lines. Stations with the largest antennas and highest power are more likely to make the first dx contacts and to work more stations under marginal conditions, but these advantages are easily lost with poor operating habits. Use your call sign or name, location, and frequency when leaving a report. To build the largest and most complete amateur radio community site on the internet. The propagation programs dont even attempt to make a guess for propagation on 160, since they dont know the factors that. Jan 17, 2019 life above 50 mhz is the topic of the new january 17 episode of the arrl the doctor is in podcast. Radio propagation prediction software uses many factors to determine the statistical probability of a particular path being open. It also features several propagation forecasting tools, allowing you to quickly and easily estimate current hf shortwave propagation conditions between any two locations in the world. At that time, in australia the sun is already above continue reading. Propagation, high to above normal conditions predicted for cq ww dx cw contest, hood nw7us, cq 2002 nov pg. Items such as the time of day, the variations of hf propagation that are experienced over. Very long distance propagation in the 144 mhz band. Designed for the commercial, government, amateur radio and shortwave listener communities, the software provides a powerful interface for all sdr users.

The area prediction data will be superimposed on the dx atlas map, and you will be able to magnify and scroll the map, and view it in the azimuthal and 3d projections. Acehf pro hf propagation simulation and visualisation software. A word about ham radio propagation, radiation angles and antennas. If you can hear a beacon now, send a report to dx summit. So far, the only problem has been that you really must be a dedicated enthusiast to run all. Propagation of radio waves via lineofsite and ionospheric paths. One of the very best and easiest ways to work dx from the uk on the 50 mhz 6 metres band is via the sporadic e propagation for which the season usually occurs between may august each year. A monthly dx propagation forecast for the radio amateur. Amateur radio propagation conditions in the united kingdom. Observation 2 another member has a full wave loop 50 feet above ground.

Currently, i am working on a paper regarding propagation on 60 metres. Results are rendered in an easytounderstand colorgraphic display. One example is w4clmb transmitting 30 watts continuously into a vertical on 50. While listening or planning to work a dx station, the radio amateur would like to know what are the current propagation conditions, know if the propagation is open toward a specific location at a specific time, or at what time the band will be open for a specific pointtopoint circuit. During the last month, quite a number of openings occurred, showing that propagation from europe to australia is not as rare as i initially thought. Vp6r pitcairn island oc044 vk9nc, vk9ne, vk9ng norfolk isl. Kingston amateur radio club propagation prediction. This can result in big pileups with stations around london being worked by the dx station, only for an hour later stations in the.