2 meter radio propagation software

Here the ham radio antenna propagation is slightly different. When both obstructions are effective, three lineofsight paths are involved. These receiverservers make it possible for anyone to listen to ham radio online. Diffraction 2 radio propagation by diffraction over two successive obstructions this program calculates the overall transmittertoreceiver loss when the radio path includes diffraction over two successive obstructions. My path was about 15 miles lineofsight, his path was via the internet. Our software features land mobile vhf, uhf 800mhz, microwave, etc. Results include field strength at the receiving site.

To build the largest and most complete amateur radio community site on the internet. Kingston amateur radio club propagation prediction. The sr10 is a bluetooth twoway radio adapter based on bluetooth 2. Irregular terrain model itm longleyrice 20 mhz 20 ghz if77. They can be found on lf, mf, hf, vhf, uhf, and microwave frequencies. Discussion in general technical questions and answers. Radiolink propagation prediction calculate path losses of a pointtopoint radio link. 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.

This workinprogress guide should get you well started with the software. Even archrivals need to put each other in their logs to earn points. This software is even used by the military and other clients around the world. It is common knowledge now this will be one of the lowest sunspot cycles of many amateurs time in radio.

This page provides basic understanding of the principles of electromagnetic radiation, the structure of the earths atmosphere and solarterrestrial interactions necessary for a working knowledge of radio propagation. N2a calculates predicted coverage and availability for an hf radio network. Free online vhfuhf propagation tool for technical and non. The english operator had used echolink to connect to the 2 meter repeater i was using at the time. Propagation studies detailed service calculations of radio transmitters in a given area. This software has esoteric modes that can deal with short lived paths or very weak signals in meteor scatter, and very weak slow signal modes for eme, and below the noise hf propagation. Free, secure and fast windows ham radio software downloads from the largest open source applications and software directory. A beginners guide to meteorscatter communication just. Also contains solar and radio propagation information applicable to ham radio including solar conditions, space conditions, online propagation tool, online sn to sfisfi to sn conversion tool, online auroraauroral activity to latitude conversion tool, and online kindex to signal noise conversion tool.

You can connect various twoway radio devices in the market by using sr10 and may talk wirelessly using bluetooth headsets in the market. The messages exchanged are very short, typically only callsigns, rs, or maybe. Usable hf frequencies page refreshed every 20 minutes use the indicated color red, yellow, green, blue, white, etc. At 2 meters, the same meteor burst will allow communication for only a few seconds to a minute. 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. Acehf is propagation forecasting and modeling for amateur radio as well as for shortwave radio listening and general hf operation. Radiowave propagation diffraction over two successive. Dont be intimidated by the rapidfire action that occurs during ham radio contests. We also have advanced consultancy software for the prediction of digital hf and vhf. The 2 meter band is a popular choice for digital packet transmission, with 144. Free solarterrestrial data displayed on your web page or site, updated every 3hours. The total transmitter to receiver path loss is the sum of the three individual path losses plus the refraction loss over each of. The software is open source, and the data collected are available to the public through this site. The prediction models used for these networks are devided by coverage distance.

It uses data gathered by automatic packet reporting systeminternet service aprsis from packet stations in the amateur radio service. Ham radio deluxe is the worlds most popular ham radio software. Demystifying hf radio propagation and modeling check out the acehf propagation software the latest is version 2. Voacap voice of america coverage analysis program is free professional highfrequency hf propagation prediction software from ntiaits, originally developed for voice of america voa. Operating on the highfrequency hf ham radio bands can be very exciting as conditions change around the world. Radio line of sight calculator for use on vhfuhf ham bands. Using a software defined radio sdr on the fm broadcast band to foretell 2meter band openings. Hf propagation prediction is a statistical science.

Ive never noticed any effect of clouds on short range 2 meter contacts. Compare the best free open source windows ham radio software at sourceforge. Another form of vhf propagation is called sporadic e propagation. Voacap voice of america coverage analysis program is free professional highfrequency hf propagation prediction software from ntia its, originally developed. The map is created using latlong info, and hops from node to node that data travels. Their focus is in the vhf and low uhf frequencys 50500 mhz. Ngoes vhf propagation map displays current vhf band openings during the past hour. Dx toolbox from blackcat systems searches the web for you, gathering information on solar and geomagnetic conditions that affect radio propagation. This map shows realtime radio propagation from stations operated near 144 mhz. Create terrain profiles using digital elevation models. Palmprop palmprop is a software for palmos dedicated to the forcast of hf radiowave propagation by f5hla hits. Join katie wy7yl on her tour of one of our ham radio outlet flagship superstores in beautiful plano, texas. Click on the map and the spots with the callsigns will be listed and is clickable. The rest of information is useless and it doesnt interest anybody.

Software, data and validation examples for ionospheric and. Current sunspot cycle activity, space weather, solar storm. Signals in this band travel primarily lineofsight or slightly further. The radio coverage tool is based on the longleyrice vhfuhf its. Alinco drb185ht 85 watt 2 meter transceivers are their highest power 144 mhz vhf mobile.

They compare very favorably to other makers models that have less. Predicting propagation in ham radio with voacap online. Any white bubble indicates no suitable frequency or high absorption. The grey line is a band around the earth that separates daylight from darkness.

Vhf radio systems have better coverage than uhf systems due to the better bending of vhf frequencies. Discussion in general technical questions and answers started by kc0bus, aug 11, 2015. How does radio propagation affect the two meter band seasonally. The online prediction service voacap online is easy. S meter lite software s meter lite is a nocost program that displays your receivers s meter signal strength in a window by w8wwv dx toolbox dx toolbox searches the web for you, gathering information on solar and geomagnetic conditions that affect radio propagation. You might find their user interface ui more user friendly. To help you be in the right place at the right time, propagation prediction programs are available. Ham radio deluxe software radio amateurs best asset. Sporadic e sporatic e is an unusual form of radio propagation using characteristics of the earths ionosphere. Propagation prediction kingston amateur radio club. Acehf professional propagation software for hf radio operators.

Contesting is unusual as a sport, in that the participants score by cooperating with one another. Asaps course hf radio propagation course hf radio propagation manual. She will show you the store and introduce some of the staff in this short video. Just like websdr, it enables sdr hf receivers to be operated remotely over the web. Here is a simple line of sight calculator that will do the complicated math for you to determine just how far the horizon is from your ht or your base station antenna at any height above level and flat ground or calm water on the vhfuhf ham bands.

Review of propagation prediction programs voacapbased. How does radio propagation affect the two meter band. Ham radio fun with tropospheric ducting propagation youtube. Whereas most forms of skywave propagation use the normal and cyclic ionization properties of the ionospheres f region to refract or bend radio signals back toward the earths surface. Calculations radio mobile rf propagation simulation software. Softwright, a gsa contract holder, is the developer of the terrain analysis package tap pcbased terrestrial rf propagation software. Smeter reading of the cw beacon can be used to determine whether the radio propagation conditions are good enough to allow a sustainable ssb radiotelephony qso or if the signal strength is only good enough for lower bandwidth modes like psk31 or ft8 and so on so forth. Institute for telecommunication sciences resources radio propagation software radio propagation software. Onboard software defines what mode or band is in use at any particular time and this is determined by amateurs at socalled earth stations who control or.

It displays not only the current status of the hf and vhf bands, but also additional solar and terrestial progatation related data. Most radio propagation beacons use amateur radio frequencies. An amateur radio propagation beacon is a radio beacon, whose purpose is the investigation of the propagation of radio signals. Please see the software downloads page for details of which platforms are. Vhf propagation map this map shows realtime radio propagation from stations operated near 144 mhz. Many are free, such as the hamcap software from alex shovkoplyas ve3nea.

Microwave beacons are also used as signal sources to test and calibrate antennas and receivers. By correlating hops with the position at each end of the hop, distances can be inferred. Send formated dx spots indicating clearly both locators and the type or propagation. Transmitter to apex 1, apex 1 to apex 2, apex 2 to receiver.

Following is a summary of where we are, where we are headed in this cycle, and what we can expect in future cycles and why. At 28 and 50 mhz, an active meteor can sustain propagation for 30 seconds to several minutes. It is annoying for commercial users of twoway radio but fun for hams. Radio propagation prediction software an overview, article, tutorial about the basics of radio propagation prediction software for use on the hf bands for predicting broadcast coverage, as well as the possibility of establishing two way radio communications, maritime mobile radio communications, and for many more applications. This map uses 10 meter spots to compile its 28 mhz propagation map. Hf propagation is a handy little ad supported windows phone 7 application to inform ham radio operators and short wave listners about the current band conditions. Qradiopredict is an experimental software for vhfuhf propagation prediction and radio coverage analysis.

Radio amateurs best asset, rig and rotor control, logging, digital modes, and satellite. The 2meter amateur radio band is a portion of the vhf radio spectrum, comprising frequencies. 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. The areas noted in the forecast have the necessary atmospheric conditions to produce tropospheric bending of vhf, uhf andor microwave radio waves. It is real time, but you must manually refresh this page. Its ideal for the ham radio operator, shortwave listener, or other radio. This is a sample of stations i worked or heard during a nice tropospheric ducting 2 meter band opening from my location in albert lea, minnesota, usa. Drb185ht transceivers deliver highpower and superior performance without compromise. Had an old pi so gave it a try with a simple 40 meter filter. How radio waves propagate in other than straightline paths is a complicated subject, but one that need not be a mystery.