Eric Prydz Opus Piano Sheet Music Jun 2026

UI-View32, written by by Roger Barker G4IDE SK, is a 32-bit Windows APRS program.

 
 

UI-View16 and UI-View32 Windows APRS Clients

 
 

i [UI-View]   [UI-View32]  [Registration]  [Downloads]  [Support]  [Maps]  [Map Software & Add-Ons]  [APRS Links

 
 

What is UI-View?

UI-View is an APRS client that runs on Windows. This application differs from most APRS software in that it isn't designed just to be used with TNCs in terminal mode. UI-View also supports TNCs in KISS mode, AGWPE host mode and BPQ host mode. The 32 bit version of UI-View also supports WA8DED/TF host mode, and the variant of it used in the SCS PTC-II and PTC-IIe. The host mode support means that UI-View can be used with a wide range of packet hardware and allows up to 16 RF ports to be used.

It can run as a full-featured internal intelligent digipeater with the TNC in KISS mode, and with modification to the UI-View2.INI file, supports the new WIDEn-N settings, and has full support for connecting to APRS servers on the Internet and running as an IGate or Internet Gateway.

UI-View uses bitmap images for its maps. Also, the 32 bit version has full support for Undertow Software's Precision Mapping CD atlas version 5 or 6, allowing you to zoom to street level anywhere in the USA. Their version 7 is also supported by PMapServer7 modified by Bill Diaz KC9XG. Download PMapServer. Precision Mapping 8 could use PMapServer 7. Users of the newer Precision Mapping 9 should use PMapServer 9.

With open architecture, UI-View is designed to make it easy for software authors to write add-on applications that provide additional functionality. There are two versions of UI-View, the original UI-View (sometimes referred to as UI-View16), and UI-View32.

UI-View (or UI-View16)

The 16 bit version will work on Windows 3.1 as well as on 32 bit versions of Windows, but most people should use UI-View32. It is supplied as "registration-ware". An unregistered copy is almost fully functional. The only restriction is that some of the IGATE functionality is disabled. Registration covers both UI-View(16) and UI-View32. See the registration link below.

UI-View32

UI-View32 is a 32 bit version and so needs a 32 bit version of Windows - Win95, Win98, WinME, Win2000, WinXP. It is for registered users only, and has many extra features compared to UI-View(16). If you are unfamiliar with UI-View32, you can try UI-View(16), but unless your hardware doesn't meet the minimum specs for UI-View32, the 32 bit version is recommended. The absolute minimum hardware spec to run UI-View32 is a P120 with Windows 95, 98, ME, 2000 or XP. If you run it on anything less than that, then it will be very slow. Don't expect to be able to run PMapServer7 on a P120. Undertow's own "minimum spec" is for a 200 MHz Pentium, but you will get better performance by running it on a more capable machine. A 500 MHz machine will run PMapServer7 a lot more smoothly than one that only just meets the minimum requirements. It will run fine on Windows Vista, Windows 7, Windows 8.x and Windows 10, but because of UAC (user access control) it should NOT be installed below Program Files or Program Files(X86).

 
 
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Roger Barker G4IDE SK

Roger Barker G4IDE became a silent key on September 8, 2004. The amateur radio community lost a great friend on that day. He will be remembered as a true ham. Roger was the author of WinPack, UI-View and UI-View32, as well as other programs. UI-View has had a huge and positive impact on the APRS community. Most of us only knew him through the UI-View support group, but some UI-View users were fortunate enough to have met him. He was ever-present on the list answering questions that had usually been asked before, but always courteous and always helpful. Even in the middle of the night, he often posted replies. He leaves behind a legacy that will be useful to thousands of hams world-wide for years to come, and his loving wife Dee, his son Steven and his daughter Kate.

Just before Roger G4IDE passed away, the registration fees for UI-View and WinPack were waived, but it is asked that you make a donation to your local or national cancer agency. Please ignore the registration instructions in the UI-View Help.

UI-View Registration:

For registration of UI-View32, please visit Andy Pritchard's website (M0CYP). Enter your callsign and name and then click on the registrar that lives the closest to you. Andy also has some great "add-ons" for UI-View & UI-View32.

WinPack can be downloaded from Andy's site. The old WinPack site www.winpack.org.uk is no longer available.

 

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UI-View (16 bit) Downloads

UI-View v2.39 (not intended for XP and newer) is a single file for doing a full installation. uisfx239.exe (1.86MB).

If you want to be able to put the installation files on two floppies so you can transfer them to another PC, then download ui239_1.exe (1.38MB) and ui239_2.exe (475KB) instead and run each of them with an empty formatted floppy in A: drive and they will create disk 1 and disk 2 of a two floppy disk installation set.

If you are using the 16 bit UI-View v2.32 or later, you can update it to v2.39 with  u16up239.exe (1.03MB). If you are using a version of UI-View earlier than v2.38 with AGWPE, you should install this update. Unless there is a reason to use the older 16 bit version, choose UI-View32 v2.03 below.

 
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UI-View32 v2.03 Downloads

UI-View32 cannot be used without a registration.

If you are in the USA or Canada, and want to use UI-View32 with Precision Mapping, then see the UI-View32 and Precision Mapping page for information about what you need to download. PMapServer9 allows use of Precision Mapping version 9 from UnderTow Software. You can still /download PMapServer. A few screenshots can be viewed here on this site.

V2.03 is the latest full installation of UI-View32. It is supplied as a single file, self-extracting installer 32full203.exe (5.02MB).

UI-View32 V2.03 Update - If you already have a previous version of UI-View32 installed, this self-extracting installation system can be used to update UI-View32 V1.80 or later to V2.03 - 32upd203.exe (2.52MB). See CHANGES.TXT for details of all the changes that have been made since V1.80.

NOTES: UI-View32 was written before Windows Vista, Windows 7, or Windows 8 were on the horizon. Versions of Windows newer than XP use UAC... User Access Control. The operating system doesn't like programs writing to files below Program Files. UI-View saves settings in the file uiview32.ini any time you make changes, and of course the station lists are always changing. For this reason, UI-View32 should be installed somewhere other than below Program Files for versions of Windows newer than XP.

Operating systems newer than XP do not support .hlp help files. The context sensitive help built into UI-View really helps set it apart from other APRS clients. If you are using anything newer than XP but older than Windows 10, you should download WinHlp32.exe from Microsoft's site. Unfortunately, it won't work on Windows 10, but there is a solution. Download RestoreWinhelp32.exe from Stephen WA8LMF's site. It is based on work by Komeil Bahmanpour.


UI-View Support

The old Yahoo support group has been closed. It was migrated over to groups.io on Nov 10 2019. Please include your call sign if you subscribe, and also include it in any posts. Messages to the group by email should be in plain text format. Use the following link to subscribe to the group.



Eric Prydz Opus Piano Sheet Music Jun 2026

The transition of Eric Prydz from a nine-minute electronic journey to the solo piano is a study in how a simple melodic seed can command an entire composition. While "Opus" is a landmark of progressive house, its sheet music reveals a structure that is surprisingly classical in its reliance on minimalist ostinatos and harmonic tension. MuseScore.com The Core Composition: F# Minor and Arpeggiated Bliss At its heart, "Opus" is written in the key of , a key often associated with dark, contemplative, yet driving energy. On paper, the sheet music typically highlights the three foundational pillars of the track: Hooktheory The Arpeggiated Ostinato: The signature "mandolin-like" riff that defines the track. In sheet music, this appears as a relentless, repeating sequence that requires extreme precision and rhythmic consistency. Harmonic Simplicity: The progression revolves around the i, iv, and v degrees (F# minor, B minor, and C# minor), which provides a stable bed for the melodic evolution. The Tempo Ramp: Uniquely, the track starts at a glacial 31.5 BPM and accelerates to a standard 126 BPM over nearly four minutes. For a pianist, this "manual" tempo increase is the greatest technical challenge, requiring a steady hand as the intensity builds. Hooktheory Translating Electronic Sound to the Keys Pianists like Hasit Nanda and various MuseScore contributors have adapted "Opus" for the keyboard, focusing on different ways to replicate its electronic "walls of sound". Hasit Nanda Opus - Eric Prydz Sheet Music with Chords for Piano (Solo) easy

Master the Build: Eric Prydz "Opus" Piano Sheet Music Guide There is something hypnotic about the slow-burn tension of Eric Prydz’s "Opus." What starts as a simple, pulsating note evolves into a massive, shimmering climax that has become a modern anthem in electronic music. If you are looking to bring that same energy to your keyboard, finding the right sheet music is the first step. Why "Opus" is a Piano Favorite Unlike many EDM tracks that rely heavily on complex sound design, "Opus" is fundamentally melodic. It is written in the key of Minor , revolving around a core arpeggiated ostinato that repeats and accelerates. Its beauty lies in its mathematical precision—making it a perfect candidate for a solo piano arrangement. Where to Find the Sheet Music Depending on your skill level and budget, here are the best places to find "Opus" piano scores: MuseScore (Community Favorites) : For a beginner-friendly version , check out the solo piano score on MuseScore . It captures the main ostinato and harmony across 17 measures. You can also browse the full song collection for various user-submitted transcriptions. Hasit Nanda (Professional Arrangement) : If you want a high-quality, "power-packed" performance version, pianist Hasit Nanda offers a specialized arrangement. You can purchase his Opus Sheet Music for approximately $15.00. Musicnotes (Digital Downloads) : For reliable digital prints with built-in transposition tools, Musicnotes is a go-to for many Eric Prydz arrangements. Music Theory Breakdown Understanding the structure will help you play with more emotion: Key Signature : Minor (3 sharps: Core Chords : The progression primarily uses minor, and The "Climax" Technique : When playing, remember that the tempo is your biggest tool. Start extremely slow and deliberate, gradually increasing your speed and volume to mimic the track's iconic "build". Quick Comparison of Sources Difficulty PDF / Online Free / Subscription Hasit Nanda Intermediate/Advanced Musicnotes Per Download Whether you want to perform this at a recital or just lose yourself in the loop at home, "Opus" is a rewarding challenge for any modern pianist. Opus - Eric Prydz Sheet Music with Chords for Piano (Solo) easy

Eric Prydz's "Opus" is widely regarded as a modern masterpiece of progressive house, known for its slow-burning, atmospheric buildup that culminates in a high-energy climax. For piano enthusiasts, mastering this track offers a unique challenge that blends electronic textures with classical-style arpeggios. Musical Structure and Theory To effectively use "Opus" piano sheet music, you must first understand its unconventional structure: Key and Harmony: The piece is written in F♯ Minor . It primarily revolves around three minor chords: F♯ minor (i), B minor (iv), and C♯ minor (v). Tempo Evolution: Unlike traditional piano pieces, "Opus" relies on a drastic tempo increase . It begins at an exceptionally slow pace (around 31.5 BPM) and gradually accelerates to a peak of 126 BPM over nearly four minutes. Melodic Core: The track's signature is a hypnotic, repeating arpeggiated ostinato. In piano arrangements, this is often handled through alternating hands to maintain the rapid-fire rhythm as the speed increases. Where to Find Sheet Music High-quality arrangements vary by skill level, from simplified versions for beginners to full transcriptions:

"Opus" by Eric Prydz is a masterpiece of modern electronic music, famous for its nearly four-minute-long crescendo . Translating this to the piano is less about technical speed and more about dynamic control Music Theory & Structure Written in F♯ Minor (7th most popular minor key). Complexity: Above-average chord and melodic complexity compared to typical electronic tracks. The piece relies on a main arpeggiated ostinato and harmony that repeats many times. The "Climax": The arrangement moves from very slow to a fast climax (often reaching around ) and then back down. MuseScore.com Top Sheet Music & Tutorial Sources Finding the right sheet music depends on your skill level and how much of the original 9-minute track you want to cover: Hasit Nanda Paid ($15) Professional, high-quality solo piano arrangement. MuseScore (Solo Piano Easy) Beginners; focuses on the main ostinato loop. Ethan Leo (Instagram Tutorial) Easy step-by-step note learning for visual learners. Tuttopiano (YouTube) Intermediate players learning the hand-alternating technique. Playing Tips for "Opus" Stamina is Key: Because the ostinato repeats for several minutes with increasing intensity, your wrists must stay relaxed to avoid fatigue. Master the Alternating Hands: Many arrangements use an alternating left-right hand pattern for the rapid chords at high speeds. Use the Sustain Pedal Wisely: To mimic the "washy" synth pad sound of the original, use light sustain, but clear it during chord changes to avoid a muddy sound. Start at a whisper ( pianissimo ) and slowly build to a roar ( fortissimo ). This is the "soul" of the song. If you'd like to dive deeper, I can help you find: for the track to use in a DAW (Digital Audio Workstation). hand-exercise techniques to handle the fast repetition. Piano arrangements for other Eric Prydz hits like "Generate." How would you like to continue your practice Opus - Eric Prydz Sheet Music with Chords for Piano (Solo) easy eric prydz opus piano sheet music

Short story — "Opus in E Minor" The folder smelled faintly of coffee and old paper. Maya lifted the top sheet with careful fingers, the title block handwritten in a looping, confident script: "Opus — Eric Prydz (piano arrangement)." Below the title someone had penciled a single measure, a phrase that breathed like a held note. She had found it in a secondhand shop between a stack of weathered hymnals and a dog-eared jazz fake book. Eric Prydz was a name she knew from nights that dissolved into strobes and bass, a composer of vast, electronic vistas — not the sort of person whose work you expected to find transcribed for solo piano. That impossibility made the discovery feel like a secret, or a map to a private room. Maya took the folder home and set it on the upright piano by the window. The city moved under a pale afternoon sky: buses, a cyclist braking at a red, someone laughing on a phone. Inside her apartment, the houseplants leaned toward the light, and the piano's lacquer caught streaks of gold. She smoothed the sheet, read the first bar again. The arrangement was spare but precise, the melody sketched in single-line clarity with suggestions of voicing and a few expressive marks — an editor's breadcrumbs for interpretation rather than instruction. She placed her hands on the keys. The first chord unfolded like the opening of a door: an E minor cluster that resolved into a shimmering arpeggio. It was familiar in an unfamiliar way, like recognizing a voice on the phone after years of silence. The melody rose, then fell, and with each phrase the arrangement revealed its lineage — the patient tension of electronic build translated into the human breath of rubato and pedaled resonance. Playing it felt less like reproduction and more like translation. Where Prydz had once used crescendos of synth and the perfect mechanical timing of a sequencer, the piano replaced exactness with nuance. A held pedal blurred the arpeggios into a steady wash; a delayed touch suggested echoes. In an unmarked measure near the middle, a sudden absence — a single bass note and a lonely, high-register tremolo — held the room in a fragile hush. Outside, traffic faded as if the city, too, were listening. Maya lived alone, but as the song unfolded she imagined the presence of others: a crowded club somewhere far away where the original Opus had once detonated, bodies moving as if obeying the pull of the release; a small studio where a composer had sculpted pulsing layers, unaware that one day someone would coax his textures from felt and wood. The piano made those distances small. The beat that had once driven bodies into motion became, under her hands, a heartbeat beneath a lyric line — insistence shaped into intimacy. She reached the arrangement's middle section — a passage of suspended chords and shifting meters that asked for choices. The score offered a few suggested voicings, but the rest was left blank, as if daring the player to make it personal. Maya shifted her left hand into a voicing that warmed the harmony, and the melody took on a new color, like sunlight through amber glass. She felt an odd, electric permission in that improvisation, as if the music allowed her a private dialogue with its creator. Whether Prydz would approve was a question that fluttered and sank. Approval seemed irrelevant now. The paper had done its job: it had invited someone to listen closely, to enter a piece of music and leave it altered by their body and breath. At the close, the arrangement returned to the opening motif but thinned into a single, sustained note — an E suspended over the harmonics of the piano. Maya held it until the sound vanished into the apartment's corners. She sat with her hands in her lap and let the silence return like a soft exhale. That night she searched online for other people who had arranged electronic music for acoustic instruments, for any mention of a piano transcription of Opus. She found forum threads, DIY uploads, and a handful of amateur videos, most of them earnest, some tentative. A comment thread debated whether pulsing electronic pieces gained or lost something when stripped to piano. She added nothing, only saved a link and sat with the memory of the chord progressions echoing in her head. Weeks later she returned to the shop and asked the clerk about the folder. He shrugged, said it had turned up in an estate lot — part of a musician's estate, apparently. "Came with a box of cables and some old synth modules," he told her, wiping his hands on a rag. "No name on it." Having no name felt right to Maya. The arrangement had been anonymous, a gift without attribution. In the midst of a world that often demanded headline authorship and click-visible proofs, there was comfort in anonymity. The music had arrived, been practiced, and then shared — not necessarily to claim credit but to translate an idea across mediums and people. Months passed. Maya revised a few bars of the transcription, smoothing awkward leaps and adding a tiny countermelody in the left hand beneath the bridge. Once, she recorded a short clip on her phone and posted it to a small online community of pianists who loved arranging. A dozen people left warm comments and questions about fingering and pedaling. One linked to a high-quality live recording of the original Opus; another traced the arrangement's chord underpinnings to a lesser-known piano piece from the nineteenth century. The arrangement folded into other minds, altered slightly by each new performer's touch. Years later, standing at a modest recital hall's edge, Maya cued a young pianist for an encore. The hall smelled of varnish and perfume; the lights made the glossy black of the grand piano seem like a polished star. The pianist's fingers were small and precise. When the first measure of the arrangement sounded, the audience, most of them unfamiliar with electronica, listened as if to a plain, beautiful thing. Afterward, a woman in the back wiped a tear and told Maya she had never thought a song like that could sound so vulnerable. Maya realized then that the folder in the secondhand shop had been a small bridge: a handwritten letter across genres, eras, and expectations. The arrangement did not erase the original Opus; it conversed with it. It allowed someone who had only ever known Prydz through speakers and late-night lights to encounter the same melody as a single body of sound, resonant and human. She kept a photocopy of the first page framed in her hallway. Visitors asked about it when they came in; some recognized the title and raised a delighted eyebrow, others simply admired the looping script. Maya never traced the arrangement back to its maker. Perhaps it had been a student, or a professional, or a fan whose manuscript had slipped between crates. It didn't matter. The sheet music had done what music does best: it had moved through hands, rooms, and hearts, and in the doing, it grew a little richer. On quiet evenings, she still played the arrangement, sometimes closely adhering to the penciled suggestions, sometimes letting her fingers stray. Each repetition was a tiny conversation with an absent author and with the original's electric pulse. The piano turned those pulses into breaths, and in the gap between sound and silence, she felt the name "Opus" expand — not only a track in a catalog but a living thing that continued to mean different things to different players. Outside, the city kept moving. Inside, the piano kept opening doors.

Decoding the Cathedral: The Quest for Eric Prydz’s “Opus” on Piano In the pantheon of modern electronic music, few tracks command the same visceral, slow-burning reverence as Eric Prydz’s 2015 masterpiece, Opus . It is a four-minute journey that swells from a minimalist kick drum into a euphoric, string-laden supernova—a track less about the drop and more about the arrival . But for the classically trained pianist or the adventurous bedroom producer, a burning question arises: How do you translate a progressive house anthem, built on synthesis and sub-bass, onto a single acoustic piano? The search for “Eric Prydz Opus piano sheet music” is not merely a quest for notes. It is a search for architecture, emotion, and the unique challenge of re-imagining electronic texture through ivory and felt. The Anatomy of the Arrangement Unlike a typical pop song, Opus doesn’t follow a verse-chorus structure. It is a loop-based crescendo. Any faithful piano transcription, therefore, must solve three distinct puzzles:

The Ostinato (The Engine): The track’s heartbeat is a simple, repeating 8th-note arpeggio (F, A#, D, F). On a synth, it’s a cold, sequenced pulse. On piano, this becomes a delicate, sostenuto left-hand pattern. The sheet music must instruct the pianist to play this non legato —bouncy, precise, like a dripping faucet slowly turning into a river. The transition of Eric Prydz from a nine-minute

The Harmonic Climb: Prydz uses a classic, almost Baroque chord progression (i - III - VI - VII). The power of Opus lies in the glacial pace of this progression. Good sheet music will mark this section “con moto” (with motion) but also “poco a poco cresc.” (little by little). The pianist must learn patience; the thrill comes not from speed, but from the inexorable rise in volume and density.

The Coda (The Release): After three minutes, the track unleashes a four-note melodic theme in cascading synth brass. This is where the pianist must become a mini-orchestra. The right hand plays the triumphant melody (F - D - A# - C) in octaves, while the left hand abandons the arpeggio for rolling, percussive bass chords. The sheet music here often resorts to ossia (alternative passages) because the original’s 16th-note synth runs are physically impossible for ten human fingers.

Where to Find the Score (And What to Avoid) Searching online reveals a spectrum of quality: On paper, the sheet music typically highlights the

Musescore & YouTube Tutorials: The most accessible. Amateur transcriptions often simplify the left-hand arpeggio too early or miss the crucial suspension in the minor chord. Look for versions with high ratings and a video performance. User “HDPiano” and “SheetMusicBOSS” have credible versions. Synthesia (MIDI-to-piano): Beware. Raw MIDI files of Opus are unplayable—they contain 20 synth layers. A good Synthesia arrangement will have been humanized and reduced to two staves. Professional Arrangements: Music publishers like Musicnotes or FreshSheetMusic occasionally carry official-sounding transcriptions. These are worth the $5-$7 fee, as they include proper fingering (crucial for the repetitive arpeggio to avoid tendonitis), dynamics, and pedal markings.

The Ultimate Challenge: Sustaining the “Rave” Without a Rave The hardest part of playing Opus on piano is not the notes—it’s the sustain. In the original, the energy comes from a side-chained compressor that “breathes” with the kick drum. On a piano, you have only the damper pedal. The sheet music’s most important instruction is often unprinted: “Use half-pedal and flutter-pedal.” You need to clear the harmonics between chords to avoid a muddy soup, yet keep enough resonance to mimic that electronic wash. Furthermore, a great performance of Opus requires theatrical patience. Most amateur pianists rush the middle section. They want to get to the “big part.” But the genius of Prydz’s composition is the waiting . The sheet music should have a bold, italicized note at measure 32: “Do not increase tempo. Let the dynamics do the work.” Conclusion: More Than a Transcription Ultimately, the sheet music for Eric Prydz’s Opus is a blueprint for catharsis. When a pianist sits down and plays that final, thunderous C minor chord—after three minutes of controlled tension—they aren’t just covering a dance track. They are reclaiming the cathedral that Prydz built, brick by brick, note by note. Whether you find a simple lead sheet or a virtuoso arrangement, remember: The goal is not to replicate the synth. The goal is to make a single piano feel as impossibly huge as the last two minutes of a sunrise set at a festival. And that is a transcription worth searching for.

 
 
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Links to other UI-View and APRS sites

 
 

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Other APRS Links

  • APRS SIG... subscribe at https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
  • Bob Bruninga WB4APR developed Automatic Packet Reporting System (APRS)
  • Downloads:
  • Fixing the 144.390 MHz APRS Network
    or Stephen WA8LMF's mirror site
    • Please note that RELAY, WIDE and TRACEn-n are now obsolete in North America. The big problem with them is that they cause a horrendous number of dupes. The "ping pong" effect of the dupes does more harm to the APRS network than paths that were too long.
    • The new "universal" path is WIDE2-2. Fill-in digipeaters that used to respond to RELAY should change their alias to WIDE1-1. Where mobiles need the help of a "fill-in" digipeater, they should a path of WIDE1-1,WIDE2-1 instead of WIDE2-2. Even if they happen to be in an area where the fill-in digis haven't yet changed to WIDE1-1, this path will still be compatible with all of the WIDEn-n digis in the rest of the network.
    • There may be occasions where a station needs a longer path, but many smart digipeaters are "trapping" excessively long paths. Do your part to help fix the APRS network by helping to spread the word, as well as changing your own trackers to WIDE2-2 or WIDE1-1,WIDE2-1.
  • NWAPRS - supporting APRS in the "Pacific Northwest" but lots of good information concerning configuring TNC based digipeaters with the "new paradigm" settings for WIDEn-n "wide" digipeaters and for WIDE1-1 "home fill-in" digipeaters.
  • TinyTrak 3 and PocketTracker www.byonics.com
  • OpenTRAC Open Tactical Reporting and Communications is a message protocol designed for carrying tactical information, including GPS position reports, weather data, and telemetry, over an unreliable, bandwidth-constrained network. Typically, this is the Amateur 2-meter VHF band using 1200 bps AFSK. The protocol is specifically designed, however, for use across multiple networks to support Internet backbones, satellite links, and so on. Time will tell if this is an "APRS replacement" or if it will be a parallel network.
  • OpenTracker is an APRS and OpenTRAC capable GPS and telemetry encoder, physically and electrically compatible with the Byonics TinyTrak3. The device connects to a GPS receiver and radio, and transmits AX.25 packets at 1200 or 300 baud. The firmware is published under the BSD license.
  • Xastir APRS client designed to run on several platforms including Linux & Windows.