HF DX Outlook: Stable Flux but Mild Geomagnetic Activity — Best Bands 20m & 17m (Jun 9, 2025)
2025-06-09
🌞 Space Weather & Propagation Overview (as of Jun 9, 2025 – 07:35 UTC)
- Solar Flux Index (SFI): 115 — solid for DX performance
- Sunspot Number (SSN): 87 — moderate solar activity
- Geomagnetic Conditions: A‑index = 15 (active), Kp‑index = 4 (unsettled) — mild disturbance, manageable
- Solar Wind Speed: ~497 km/s — slight enhancement in geomagnetic activity
- Radio-absorption X-ray Level: B4.6 — benign
- Bottom line: Solar flux and SSN are favorable for HF DX, but unsettled geomagnetic conditions may induce brief absorption or fadeouts.
📶 HF Band Conditions
| Band Range (MHz) | Daytime | Nighttime |
|---|---|---|
| 80–40 m (3.5–7.3) | Poor | Fair |
| 30–20 m (10.1–14.35) | Fair | Fair |
| 17–15 m (18.07–21.45) | Fair | Fair |
| 12–10 m (24.89–29.7) | Poor | Poor |
- Best DX opportunities: 20 m and 17 m remain your strongest bets around the clock. Morning and late afternoon on 40 m might surprise you.
- Poor conditions: Expect weak openings on 10, 12, and (during the day) 80 m.
🗺️ Quick Path Check
- Real-time maps (e.g., HF.dxview.org) show active MUFs, with occasional openings on 17 m and 20 m.
- CW or digital modes performing better due to higher tolerance to noise — SNR > 10 dB for SSB, > –1 dB for CW.
🔭 VHF/UHF Note
- Keep an eye on VHF activity maps for sporadic‑E or tropospheric enhancements — nothing unusual reported for today yet.
✅ Actionable Tips for Today
- 20 m & 17 m: Monitor these all day—likely best DX channels.
- 40 m (evening/night): Fair conditions could work for moderate-distance DX.
- Avoid 10–12 m unless MUF unexpectedly rises (rare with current flux).
- Use CW/digital modes to maximize success under current noise levels.
- Keep an eye on real-time propagation maps and adjust if solar conditions shift later today.
🌍 Current & Upcoming DXpeditions
- T30TTT (Tarawa, Kiribati) — Active since ~June 8 from OC‑017 on 40‑6 m using CW/SSB/FT8
- FO/G0VJG (Bora Bora, French Polynesia) — QRV from June 10–26, mainly using high-band modes
- V51/HB9SHD (Namibia) — Operating through June 15 on 40‑6 m, SSB + digital.
- VP8DPD (Falkland Islands) — On the air until July 12 on 20‑10 m with FT8/SSB
- 3DA0GY (eSwatini) — Active until June 20 on CW/SSB, possibly join CQ WPX CW
📅 Also coming soon:
- JD1BQP (Ogasawara) — June 12–21 expected on high/very high bands
🎯 Contesting & Test Activity
Today’s Contests (June 9, 2025)
- K1USN Slow Speed Test (0000–0100 Z): CW on 160–10 m
- ICWC Medium Speed Test (1300–1400 Z & again 1900–2000 Z): CW, wide band coverage
- OK1WC Memorial (MWC) (1630–1729 Z): CW on 80 & 40 m
📌 Reminder: Don’t miss the mid-late evening ICWC session at 1900–2000 Z.
🔜 Upcoming Notable Contests This Week
- Worldwide Sideband Activity Contest (June 10, 0100–0159 Z) — Single-op, all bands (SSB focus)
- DARC CW-Training Contest (June 10, 1800–1859 Z) — CW on 80 m only
- VHF‑UHF FT8 Activity Contest (June 11, 1700–2100 Z) — 432 MHz FT8 for Europe-focused grid chasingn5
- CWops Weekly CWT Tests — Multiple CW speed sessions through the week on various bands
🎉 Coming Soon: Field Day (June 28–29)
ARRL Field Day is next weekend — the fourth full weekend in June (June 28–29 this year). Great for portable station ops, emergency comms drills, and a mix of modes. Clubs and solo ops, get ready!
✅ What This Means for You
- DXpeditions: Expect active DX openings on 20 m and 17 m—Jar the rare country pile-ups, especially from VP8DPD and FO/G0VJG.
- CW Operation: Excellent opportunities today on 80 m and 40 m during ICWC and OK1WC. CWops CWTs mid-week are ideal for speed sharpening.
- SSB/FT8: Sideband contest on the 10th and FT8 on VHF/UHF on the 11th are worth a slot in your operating plan.
- Field Day Prep: Start planning your layout, power, and mode mix now—propagation charts indicate promising 20 m conditions for FD weekend.