iiinova — where your digital self keeps evolving

OH6BG @voacap.com · 29/07/2026

VOACAP Online just added simple, one‑page planning views that make HF planning faster and more intuitive. Visit www.voacap.com/hf/ and choose Planner from the Point‑to‑Point menu. Suitable for contest & DXpedition strategy planning, or just for regular operating.

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OH6BG @voacap.com · 25/07/2026

VOACAP Online now supports two propagation engines for calculating coverage maps: VOACAP and ITURHFProp. This dual‑engine option is new so you can now compare two different models side by side. All map options, incl. longitudinal midpoint and multiple map projections, are available for both engines.

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OH6BG @voacap.com · 22/07/2026

Fresh update on VOACAP Online HF propagation prediction services: you can now choose your map projection for coverage maps — Cylindrical (default) or Azimuthal Equidistant. Try it now: voacap.com/hf/ See Radio New Zealand’s footprint at 0700 UTC on 9700 kHz, beaming 35° from Rangitaiki.

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OH6BG @voacap.com · 14/07/2026

A fresh update just landed on VOACAP Online for Ham Radio / Marine / SWL: you can now choose your longitudinal midpoint for coverage maps. Until today, every map was locked to 0°, but there’s now a 180° option - finally giving listeners in Australasia and Oceania seamless, wrap‑free coverage views.

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OH6BG @voacap.com · 03/04/2026

Easter update: #VOACAP DX Charts voacap.com/dx/ — 9T0MD DR Congo, Sep 30–Oct 11, 2026 New HF propagation site for ZK3 Tokelau DXpedition: VOACAP+ITURHFProp predictions, late‑November solar tables, VOACAP coverage maps. Good DX!

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OH6BG @voacap.com · 02/04/2026

Major update on #VOACAP DX Charts! Explore fresh propagation insights for these exciting 2026 DXpeditions: 📡 3B9N Rodrigues — Apr 2–May 22 🌍 3X3A Guinea — Apr 11–25 🏝️ 3D2JK Fiji — Apr 17–22 ⛰️ 3G0Z Juan Fernandez — May 🐘 C8K Mozambique — Nov 10–20 🔗 voacap.com/dx Good DX!

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OH6BG @voacap.com · 03/02/2026

Explore HF propagation like a pro! Rob Wagner VK3BVW shares another great VOACAP Online video, this time showing how to create professional‑grade coverage maps for SWLs. A must‑watch for anyone curious about where and why signals travel. www.youtube.com/watch?v=foA2...

youtube.com

How to Create Professional-Grade Shortwave Coverage Maps with VOACAP Online

YouTube video by Rob Wagner VK3BVW

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OH6BG @voacap.com · 13/01/2026

NEWS FLASH! Rob VK3BVW has released an excellent video guide to VOACAP Online for SWL — a free propagation prediction tool for shortwave listeners. Even better, ham radio operators will find that the same concepts translate directly to the Ham Radio version! www.youtube.com/watch?v=C4Xb...

youtube.com

VOACAP Propagation Prediction - A Major 2026 Update

YouTube video by Rob Wagner VK3BVW

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OH6BG @voacap.com · 11/01/2026

UPDATE on VOACAP Online for Ham Radio, voacap.com/hf/: A long‑standing Safari‑only UI bug on macOS has been fixed. Selecting a value from the station power drop‑down no longer causes the map to drag when moving the cursor away.

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OH6BG @voacap.com · 07/01/2026

Update to #VOACAP DX Charts at voacap.com/dx Several exciting DXpeditions have been added: • KP5/NP3VI Desecheo — Jan 12/14 to mid‑Feb 2026 • VP2E Anguilla — Mar 3–20, 2026 • TX9W Marquesas — Apr 19–30, 2026 • ZK3 Tokelau — Nov 2026 Good DX!

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OH6BG @voacap.com · 20/12/2025

Updates on #VOACAP DX Charts at voacap.com/dx/ 🌍 LZ0A South Shetlands Islands | January 2026 ❄️ 3G9S Chilean Antarctic | Jan 10-17, 2026 🌴 V6HUCHIDA Micronesia | Jan 22-28, 2026 VOACAP DX Charts - Helping DXpeditions succeed, helping amateurs connect. Happy Holidays everyone & Good DX!

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OH6BG @voacap.com · 09/12/2025

New: a lightweight HTML tool to convert EiBi shortwave schedules into rich KiwiSDR DX labels. Download eibi2kiwi.html + eibisites.csv from github.com/OH6BG/eibi2k..., and the latest EiBi CSV from www.eibispace.de. Ideal for HF BC listeners. Runs fully in your browser. Python version available, too.

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OH6BG @voacap.com · 22/11/2025

I am thrilled to introduce #VOACAP Online for SWL – a free-of-charge dedicated shortwave propagation prediction service designed specifically for shortwave listeners (SWL). Accessible at www.voacap.com/swl/, this powerful online tool brings professional-grade propagation analysis to your fingertips.

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OH6BG @voacap.com · 20/11/2025

Notice #VOACAP Online users: In recent Chrome/Edge browser versions, SVG rendering of thin lines has regressed. VOACAP Online’s propagation wheels may look broken or jagged. Firefox/Safari display them correctly - use those for best results until Chromium fixes this.

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OH6BG @voacap.com · 11/11/2025

Two exciting new DXpeditions have just been added to the #VOACAP DX Charts: * S21SDX – Bangladesh (Nov 11–17, 2025) * J38W – Grenada (Nov 23 – Dec 3, 2025) Check them out at voacap.com/dx/ . Good DX and may the bands be open!

voacap.com

VOACAP DX Charts

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OH6BG @voacap.com · 17/10/2025

NEWS! Generate VOACAP coverage maps fast with Go. Run Python predictions, then render MUF/REL/SNR50/SNR90/SDBW via plot_maps.go or via its compiled binary. Skips existing files, runs in parallel, shows progress. 216 maps take 2 minutes to plot (9 bands x 24 hours). Code: github.com/OH6BG/VOACAP...

github.com

GitHub - OH6BG/VOACAP_MAPS: Scripts to run VOACAP P2P prediction matrix, plot maps and store to database

Scripts to run VOACAP P2P prediction matrix, plot maps and store to database - OH6BG/VOACAP_MAPS

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OH6BG @voacap.com · 16/10/2025

Major update to my #VOACAP tools: github.com/OH6BG/VOACAP... - run_p2p_matrix.py: safer, cleaner point-to-point predictions - plot_maps.py: generates VOACAP coverage maps, now fully compatible with the HamCAP DX Charts framework I just updated yesterday. Demo: www.voacap.com/dx/cy0s/hamc...

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OH6BG @voacap.com · 15/10/2025

New release: HamCAP Maps → github.com/OH6BG/HamCAP... . A lightweight client-side viewer for #VOACAP coverage maps made with HamCAP: multi‑band, 3 time slots, lazy‑loading, LRU cache, keyboard access, theme toggle & zoom‑in‑tab. See 3Y0K Bouvet, Feb 2026 demo → www.voacap.com/dx/3y0k/hamc...

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OH6BG @voacap.com · 13/10/2025

NEWS: Launched an ADIF → Cabrillo Converter, a lightweight, single-file HTML/JS/CSS tool that runs 100% in your browser. Drag & drop (or browse) your ADIF file, click “Process,” then preview and download a Cabrillo log — no installations, no servers, no data leaks. 👉 github.com/OH6BG/OH6BG-...

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OH6BG @voacap.com · 05/10/2025

A lot of backend refactoring done at #VOACAP online (www.voacap.com/hf) to make the services more robust. Added new visual cues for ITU Wheel predictions: progress is now shown directly in the button w/ light red background color. Each run takes about 5 seconds, so a little patience is appreciated.

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OH6BG @voacap.com · 04/10/2025

Two upcoming operations now have their own dedicated propagation prediction sites at #VOACAP DX Charts (voacap.com/dx/), including VOACAP and ITURHFProp forecasts plus detailed sunrise/sunset times: * 5K0UA – San Andres Island (Oct 20–30, 2025) * FW5K – Wallis and Futuna (Oct 20 – Nov 7, 2025)

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OH6BG @voacap.com · 27/09/2025

Opened a special propagation site for 5R8TT & 5R8XX Madagascar (Oct 29–Nov 12, 2025), now on the #VOACAP DX Charts list (voacap.com/dx/5r8tt/). Features VOACAP & ITURHFProp predictions, sunrise/sunset data, and an azimuthal equidistant map. Good DX!

voacap.com

VOACAP: 5R8TT Madagascar

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OH6BG @voacap.com · 27/09/2025

Updated #VOACAP DX Charts with propagation predictions for 9L8MD Sierra Leone (Oct 30–Nov 10, 2025). As we heard, 3C2MD Equatorial Guinea was cancelled. But now a special site with VOACAP & ITURHFProp data + sunrise/sunset times is live for 9L8MD: voacap.com/dx/9l8md/ — Good DX!

voacap.com

VOACAP: 9L8MD Sierra Leone

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OH6BG @voacap.com · 25/09/2025

Update on #VOACAP DX Charts: New special prediction sites live! - A52G Bhutan — Oct 1–8, 2025 - 3G0YR/CE0Y Easter Isl — Nov 26–Dec 3, 2025 Includes VOACAP/ITURHFProp propagation predictions, sunrise/sunset analysis + azimuthal equidistant maps. Good DX! 👉 voacap.com/dx/

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OH6BG @voacap.com · 20/08/2025

To keep www.voacap.com and all its online services running smoothly, a quick bot check may appear on your first visit — and occasionally after. It helps block automated traffic and ensures real users get fast access. Thanks for your patience and understanding!

voacap.com

Making sure you're not a bot!

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OH6BG @voacap.com · 16/08/2025

Update on #VOACAP DX Charts (voacap.com/dx/): OJ0YL & OJ0W Märket Reef DXpedition (Sep 20–26, 2025), IOTA EU-053; 160M-6M; CW, FT8, SSB. Special VOACAP site at voacap.com/dx/oj0yl/, in-depth propagation analysis, sunrise/sunset times. If they land early, they participate in SAC CW. Good DX!

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OH6BG @voacap.com · 14/08/2025

New special detailed sites on #VOACAP DX Charts for KH9/K9HEI Wake (Aug), 3G0XQ San Ambrosio (Oct/Nov), PY0S St. Peter & St. Paul (Oct/Nov), PJ6Y Saba (Oct 17–29), 9U1RU Burundi (Oct 29 – Nov 19), PJ7UK St Maarten (Nov 28 – Dec 7), CY0S Sable (March 2026) and VP0SG So. Georgia (March 2027). Gud DX!

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OH6BG @voacap.com · 12/08/2025

Excited to unveil the fresh layout for #VOACAP DX Charts! Now featuring light & dark mode, collapsible Antennas & Featured DX sites sections. Dedicated VOACAP prediction sites also got a sleek upgrade! Dive in at voacap.com/dx/

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OH6BG @voacap.com · 09/08/2025

#VOACAP DX Charts updated! Now featuring predictions for 3C0W Annobon & 3C3W Equatorial Guinea (Sep 2025). Get in-depth, band-specific predictions & sunrise/sunset times for September. voacap.com/dx/ ...Good DX!

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OH6BG @voacap.com · 07/08/2025

The #VOACAP Online band-by-band analysis (menu: Point-to-Point > VOA Band-by-Band) code is completely rewritten. Get interactive short/long-path overviews, day/night visualizations for TX/RX/midpoint (15th day of month), and detailed band-specific predictions. voacap.com/hf/

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OH6BG @voacap.com · 05/08/2025

#VOACAP DX Charts are updated for the FP5KE DXpedition to St Pierre & Miquelon (Sep 15-26, 2025). The F6KOP radio club's 16 operators will be on all bands/modes. A special site offers detailed predictions and sunrise/sunset times to aid in low-band forecasting at voacap.com/dx/fp5ke/

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OH6BG @voacap.com · 25/07/2025

New ham radio PHP scripts! Calculate distance/bearing (Haversine & Vincenty), Maidenhead grid locators, and sun times (sunrise, sunset, etc.). Check them out! github.com/OH6BG/hamPHP/

github.com

GitHub - OH6BG/hamPHP: Various PHP scripts for amateur radio purposes

Various PHP scripts for amateur radio purposes. Contribute to OH6BG/hamPHP development by creating an account on GitHub.

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OH6BG @voacap.com · 14/07/2025

Dave Straube's (N7LKL) SOTA Weatherbot is now upgraded with VOACAP propagation predictions tailored to your specific summit and date. You'll receive a chart showing the best CW and SSB band openings using QRP to help plan your activation. For more info, please go to sotaweatherbot.wordpress.com.

sotaweatherbot.wordpress.com

SOTA Weatherbot

Automated summit weather forecasts for SOTA activators.

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OH6BG @voacap.com · 30/06/2025

VOACAP DX Charts (voacap.com/dx/) have been updated with predictions for the upcoming PY0S St. Peter & St. Paul Rocks DXpedition (Oct/Nov 2025). A full-featured service, with detailed analysis and precise sunrise/sunset times, will be made available as soon as the team announces their exact dates.

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OH6BG @voacap.com · 02/06/2025

#VOACAP DX Charts Update! New azimuthal equidistant maps show bearing & distance to selected DXpeditions (under "VOACAP Prediction Site"), centered on YOUR QTH! The maps are interactive & downloadable as PNG. Check it out: voacap.com/dx/

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OH6BG @voacap.com · 18/05/2025

Heads up, DX community! An update regarding #VOACAP DX Charts: 3G0XQ from San Ambrosio (San Félix) is scheduled for October/November 2025. This is a rare entity. A dedicated propagation prediction site will be available closer to the DXpedition. Good DX!

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OH6BG @voacap.com · 11/05/2025

Ready to conquer airwaves & DX stations? My CCF/OHDXF presentation unlocks #VOACAP secrets: decipher Signal Power distributions, leverage MUFday values & tap into its best services. PLUS, harness ClubLog's smart QSO-based predictions! The PDF is here: www.voacap.com/2023/documen...

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OH6BG @voacap.com · 10/05/2025

Added 9U1RU Burundi (Oct 29 - Nov 19, 2025) to the #VOACAP DX Charts! voacap.com/dx/ Good DX!

voacap.com

VOACAP DX Charts

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OH6BG @voacap.com · 08/05/2025

New DXpedition charts added to the #VOACAP DX Charts! Mark your calendars for these upcoming activations: 🛰️ KH7AL/KH9 Wake Isl (May 2025) 🏝️ VU7T Lakshadweep (May 22-28, 2025) 🌍 3C2MD Equatorial Guinea (Oct 30 - Nov 10, 2025) Plan your contacts at voacap.com/dx . Good DX!

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OH6BG @voacap.com · 29/04/2025

Update on #VOACAP DX Charts at voacap.com/dx/: V6D Micronesia from Sep 22 - Oct 6, 2025! Get top-notch VOACAP & ITURHFProp propagation predictions & precise sunrise/sunset times at this tailor-made site: voacap.com/dx/v6d/. NOTE! ZS8W Marion predictions at voacap.com/dx/zs8w/ !

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OH6BG @voacap.com · 21/04/2025

#VOACAP DX Charts Update - voacap.com/dx/ : 📍 Z68YL & Z68OM – Kosovo (May 20–30, 2025) 📍 OY6FRA & Team – Faroe Islands (June 1–11, 2025) 📍 PJ6Y – Saba (Oct 17–29, 2025) The two first have a dedicated prediction site with: ✅ VOACAP + ITURHFProp predictions ✅ Detailed sunrise/sunset times Good DX!

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OH6BG @voacap.com · 17/04/2025

Ready for Marion Island?! Just launched a full HF propagation site for the ZS8W DXpedition (Apr 21–May 16, 2025)! Includes VOACAP + ITURHFProp predictions & detailed sunrise/sunset times. Plan your best shot at this rare one! www.voacap.com/dx/zs8w/ ... Good DX! 🎤🎧

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OH6BG @voacap.com · 15/04/2025

DX Summit Update at dxsummit.fi! HF propagation predictions now powered by ITURHFProp via #VOACAP Online, showing Basic Circuit Reliability for hopefully more accurate results — especially on low bands and on long-path circuits. Give it a try and see the difference!

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OH6BG @voacap.com · 29/03/2025

1/2 -- Exciting update on #VOACAP Online! Now featuring two Propagation Wheels: CAP Wheel (VOACAP’s REL value) & ITUR Wheel (ITURHFProp’s BCR value). Both measure circuit reliability but use different methods—compare them for better low-band predictions from ITURHFProp! Try it now: voacap.com/hf/

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OH6BG @voacap.com · 25/03/2025

New VOACAP Online User's Manual (March 25, 2025) is out! Refresh your browser for the latest version. Chapters now classified by main menus + all antenna take-off angle graphs added. Check it out! www.voacap.com/2023/documen...

voacap.com

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OH6BG @voacap.com · 22/03/2025

Exciting news at VOACAP Online, voacap.com/hf/! The ITURHFProp (P.533) prediction engine from the ITU is now fully integrated into the platform! Compare its results with VOACAP’s to gain deeper insights into HF propagation. Happy exploring!

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OH6BG @voacap.com · 12/03/2025

Time for the summary sheet for vertical antennas at #VOACAP Online! Ground quality matters—seawater boosts the take-off angles & gain of the verticals. Horizontal antennas (Yagis/dipoles) see little benefit. This sheet shows take-off angles only, not gain. Patterns can’t be compared for gain.

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OH6BG @voacap.com · 11/03/2025

Struggling to see the take-off angle patterns of antennas in #VOACAP Online? I’ve made contact sheets of take-off angles for all Yagi & dipole antennas at various heights across all ham radio bands! These should give a clearer overview of their behavior. More to come—happy exploring! 5 m or 17 ft.

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OH6BG @voacap.com · 10/03/2025

... and still another quick #VOACAP DX Charts update at voacap.com/dx/: ✔ PJ7AA St Maarten, Mar 9 - Apr 5, 2025 ✔ 8R1TM Guyana, Mar 11 - Apr 26, 2025 ✔ TO1Q Guadeloupe, Mar 24 - Apr 7, 2025 ✔ PJ7UK St Maarten, Nov 28 - Dec 7, 2025 Good DX!

voacap.com

VOACAP DX Charts

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OH6BG @voacap.com · 08/03/2025

Another quick #VOACAP DX Charts update at voacap.com/dx/: ✔ 6Y7EI Jamaica, Mar 13-24, 2025 plus their special site at voacap.com/dx/6y7ei/ ✔ 3B9DJ Rodrigues Isl, Mar 24 - Apr 5, 2025 Good DX!

voacap.com

VOACAP DX Charts

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