Meta tags:
description=Andy Smith (G7IZU) s amateur radio and astronomy station in Plymouth, UK. hosts a site where you can see live amateur radio propagation maps, track solar storms and check on the probabilities of seeing aurora from your location. Radio propagation is strongly affected by space weather conditions, so this connection is the main theme of the website. ;

Headings (most frequently used words):

g7izu, rrd, welcome, radio, reflection, detection, geomag, solar, wind, activity, bgs, kp, nowcast, dx, robot, band, status, shift, f5, to, refresh, donate, via, paypal, qr, code, recent, posts, archives, meta,

Text of the page (most frequently used words):
the (76), and (35), propagation (21), myclock (18), for (17), can (15), radio (15), solar (11), website (9), this (9), are (9), space (9), weather (9), not (8), g7izu (8), sporadic (8), 2025 (7), document (7), preferences (6), access (6), from (6), you (6), may (6), manage (5), about (5), technical (5), storage (5), that (5), network (5), social (5), with (5), frequencies (5), consent (4), purposes (4), user (4), used (4), information (4), purpose (4), will (4), site (4), mastodon (4), com (4), blackout (4), higher (4), minutes (4), hours (4), live (4), updates (4), between (4), map (4), old (4), write (4), latest (4), title (3), view (3), these (3), marketing (3), via (3), universeodon (3), earth (3), see (3), any (3), please (3), maps (3), last (3), many (3), time (3), storm (3), but (3), layers (3), bands (3), current (3), activity (3), which (3), also (3), events (3), hemisphere (3), tamitha (3), geomagnetic (3), material (3), skov (3), page (3), left (3), sidebar (3), welcome (3), reflection (3), detection (3), liveclock (3), myupdate (3), 2026 (3), displaydate (3), european (3), read (2), more (2), track (2), several (2), exclusively (2), statistical (2), your (2), service (2), statistics (2), necessary (2), legitimate (2), requested (2), subscriber (2), use (2), specific (2), out (2), communication (2), over (2), always (2), functional (2), best (2), technologies (2), like (2), consenting (2), allow (2), wordpress (2), comments (2), andy (2), date (2), bluesky (2), have (2), touch (2), attenuated (2), then (2), dependent (2), follow (2), during (2), storms (2), full (2), here (2), mhz (2), greater (2), extent (2), signals (2), way (2), all (2), multiple (2), around (2), world (2), noise (2), make (2), globe (2), mostly (2), into (2), vhf (2), high (2), levels (2), waves (2), single (2), causes (2), although (2), layer (2), global (2), band (2), clouds (2), late (2), peak (2), phenomenon (2), october (2), course (2), she (2), presents (2), occasional (2), size (2), pages (2), tab (2), links (2), learn (2), predictions (2), find (2), true (2), die (2), return (2), clock (2), clockpos (2), else (2), liveclockie (2), innerhtml (2), feed (2), 2019 (2), december (2), nov (2), cookie (2), robot (2), reports (2), ips (2), flux (2), support (2), pacific (2), ocean (2), atlantic (2), square (2), grid (2), colourgram (2), hemi (2), rrd (2), save, deny, accept, vendor_count, vendors, services, options, required, create, profiles, send, advertising, across, websites, similar, anonymous, without, subpoena, voluntary, compliance, part, internet, provider, additional, records, third, party, stored, retrieved, alone, cannot, usually, identify, storing, strictly, enabling, explicitly, sole, carrying, transmission, electronic, communications, active, provide, experiences, cookies, store, device, process, data, such, browsing, behaviour, unique, ids, withdrawing, adversely, affect, certain, features, functions, theme, flat, themeisle, proudly, powered, note, wide, disabled, due, misuse, contacted, email, tvcomm, keep, bsky, smith, devon, england, british, isles, problems, suggestions, things, would, get, blackouts, onset, lower, first, intensity, increases, become, duration, recovery, strength, feeds, example, burst, hiraiso, spectrograph, hiras, nict, japan, subject, too, big, put, nutshell, approximately, reflected, various, ionosphere, lesser, different, under, good, conditions, travel, half, even, times, frequency, change, hourly, season, amount, incident, sunlight, level, when, sun, blasts, charged, particles, rays, ionized, much, than, normally, case, blocked, escaping, far, enough, surface, onward, called, affects, uhf, shf, affected, broadband, seconds, come, rolling, bursts, well, understood, there, theories, known, ionisation, 120km, altitude, cause, refract, long, distances, hop, somewhere, 400, 2400km, hops, possible, combination, know, occur, nature, happen, anywhere, they, most, common, local, summer, morning, afternoon, extreme, days, span, localised, continents, small, isolated, add, magic, providing, surprise, contacts, locations, simply, summertime, peaking, september, northern, march, southern, presented, looking, effects, gannon, 2024, products, were, included, hour, mini, permission, original, woman, forecasts, her, channels, appears, lecture, behalf, corporate, societal, presentations, given, members, business, authorities, public, https, www, spaceweatherwoman, millersville, university, youtube, patreon, been, reduced, slightly, clicking, open, new, detailed, hand, using, large, screen, menu, top, right, mobiles, tapping, cog, opens, contains, warnings, other, larger, screens, visible, breaking, regularly, report, flares, notice, link, images, directly, dashboards, etc, web, hosting, handle, load, hundreds, simultaneous, connections, concise, factual, introduction, deals, mainly, now, casting, try, notorious, being, wrong, blog, contain, ramblings, interesting, scroll, down, info, bar, them, listen, styledate, end, edit, rbo, team, ns4, clockposns, liveclockns, close, ie4, ns6, getelementbyid, settimeout, show_clock, clockupdate, org, entries, log, meta, june, july, 2020, 2021, november, january, archives, update, dec, jan, recent, posts, donate, paypal, code, auroral, 144mhz, 70mhz, 50mhz, spots, heat, fadeout, flare, ray, status, shift, refresh, nowcast, geomag, wind, bgs, mypre_text, mysep_text, daysofweek, day, mday, monthsofyear, month, browser, supported, timer, visit, center, indian, policy, art, upcoming, rocket, launches, iaru, locator, system, amateur, contest, calendars, xray, fermilab, nova, nutrino, detector, neutron, monitors, ops, environment, aurora, western, tropo, north, american, muf,

Text of the page (random words):
g7izu rrd radio reflection detection g7izu rrd radio reflection detection welcome radio propagation maps european sporadic e european muf by grid square north american sporadic e european tropo propagation western hemisphere es n hemi aurora global hf vhf propagation atlantic hf propagation e hemi hf propagation pacific ocean hf propagation space weather live solar events earth geomagnetic environment space weather ops neutron monitors fermilab nova nutrino detector solar xray flux colourgram about the colourgram amateur contest calendars the iaru grid locator system learn about space weather upcoming rocket launches ai art links cookie policy uk square propagation maps atlantic propagation indian ocean propagation pacific propagation your browser is not supported for the live clock timer please visit the support center for support if old true document write myclock old die return date time if styledate myclock myclock if displaydate myclock myclock mysep_text myclock daysofweek day mday mn monthsofyear month myclock 2026 myclock myclock mypre_text myclock myclock if displaydate myclock hours minutes if displaydate myclock hours minutes if myupdate myclock if old true document write myclock old die return end edit by rbo team write the clock to the layer if ns4 clockpos document clockposns liveclock clockpos document liveclockns liveclock document write myclock liveclock document close else if ie4 liveclockie innerhtml myclock else if ns6 document getelementbyid liveclockie innerhtml myclock if myupdate 0 settimeout show_clock clockupdate myupdate geomag solar wind activity bgs kp nowcast dx robot band status shift f5 to refresh current x ray flux ips current solar flare ips hf fadeout dx robot reports all dx spots dx heat latest 50mhz sporadic e latest 70mhz sporadic e latest 144mhz sporadic e latest auroral reports donate via paypal qr code recent posts website updates jan 2026 cookie consent website updates dec 2025 website update nov 2025 2 website updates nov 2025 archives january 2026 december 2025 november 2025 october 2025 may 2021 december 2020 july 2019 june 2019 meta log in entries feed comments feed wordpress org welcome listen to page welcome to the g7izu radio reflection detection website this site deals mainly with radio propagation and space weather now casting i try not to make many predictions as predictions are notorious for being wrong my blog pages contain occasional ramblings that you may find interesting scroll down the left info bar to find them see my learn about space weather page on this site for a concise and factual introduction to space weather notice please do not link my map images directly into dashboards etc my web hosting will not handle the load of hundreds of simultaneous connections you can follow me g7izu universeodon com the mastodon social network for breaking events in the world of space weather and radio propagation i regularly report on solar flares geomagnetic storms and radio propagation the page links are on the left hand sidebar if you re using a large screen or touch the menu tab at the top right on mobiles tapping the cog on the left opens the information sidebar which contains live propagation warnings and other solar information on larger screens the sidebar is always visible the map size on the propagation map pages have been reduced slightly but clicking on the map will open it in a new tab for a detailed view in full size dr tamitha skov with my permission original material from this website is used by the space weather woman dr tamitha skov in the space weather forecasts she presents on her patreon and youtube channels material also appears in occasional lecture material she presents at or on behalf of millersville university also in corporate and societal presentations given to members of business authorities and the public read more about dr skov here https www spaceweatherwoman com in may 2025 tamitha presented this 4½ hour mini course looking at the causes and effects of the gannon geomagnetic storm 10 13 may 2024 products from this website were included in the course the sporadic e phenomenon sporadic e or simply es is mostly a summertime phenomenon peaking between may and september in the northern hemisphere and october and march in the southern hemisphere the causes of es are not well understood and there and many theories although it s known that high levels of ionisation in the e layer 80 120km altitude cause radio waves to refract over long distances a single hop can be somewhere between 400 and 2400km multiple hops are possible and in combination with f2 propagation global communication on the 50 mhz band is know to occur the es clouds are sporadic in nature and can happen anywhere and at any time although they are most common in the local summer with a late morning peak and a late afternoon peak extreme events can last several days and span the globe or be localised to continents small isolated es clouds can add to the magic providing surprise contacts between specific locations hf propagation and solar activity this is a subject too big to put in full here but in a nutshell the radio frequencies between 0 and approximately 30 mhz can be reflected from the various layers of the ionosphere to a greater or lesser extent at different frequencies under good conditions the propagation can allow signals to travel half way even all the way or multiple times around the world but the frequency bands for the best propagation change hourly and by season and are dependent on the amount of incident sunlight and current level of solar activity during a solar storm when the sun blasts out charged particles and radio noise and x rays these layers can be ionized to a much greater extent than is normally the case the signals can then be blocked from escaping far enough from the earth s surface and not make it up to the higher layers for onward propagation around the globe this is called a radio blackout which mostly affects the hf bands hf bands and higher frequencies up into vhf uhf and shf can also be affected by high levels of broadband noise which can last seconds minutes or hours and can come in rolling waves or as single bursts example of a solar radio burst hiraiso radio spectrograph hiras nict japan my hf radio propagation maps can track radio blackouts at onset of a blackout the lower frequencies will be attenuated first then as the blackout intensity increases higher and higher frequencies become attenuated blackout can last minutes or many hours in duration the recovery time is dependent on the strength of the storm follow my mastodon and bluesky feeds for live updates during solar storms if you see any problems with the website or have any suggestions for things you would like to see please get in touch andy smith g7izu devon england british isles earth keep up to date mastodon social network g7izu universeodon com bluesky social network g7izu bsky social note site wide comments are disabled due to misuse i can be contacted via the mastodon social network g7izu universeodon com or via email andy at tvcomm co uk proudly powered by wordpress theme flat 1 7 11 by themeisle manage consent to provide the best experiences we use technologies like cookies to store and or access device information consenting to these technologies will allow us to process data such as browsing behaviour or unique ids on this site not consenting or withdrawing consent may adversely affect certain features and functions functional functional always active the technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user or for the sole purpose of carrying out the transmission of a communication over an electronic communications network preferences preferences the technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user statistics statistics the technical storage or access that is used exclusively for statistical purposes the technical storage or access that is used exclusively for anonymous statistical purposes without a subpoena voluntary compliance on the part of your internet service provider or additional records from a third party information stored or retrieved for this purpose alone cannot usually be used to identify you marketing marketing the technical storage or access is required to create user profiles to send advertising or to track the user on a website or across several websites for similar marketing purposes manage options manage services manage vendor_count vendors read more about these purposes accept deny view preferences save preferences view preferences title title title manage consent