✦ SWX PROPAGATION BULLETIN ✦

REAL-TIME HF CONDITIONS | DATA: GIRO • GOES • GFZ • DRAO • SILSO
▸ CONNECTING...
--:--:--Z
MQTT: 0 │ WEB: 0
📻 HF Bands
160m1.8 MHz
80m3.5 MHz
40m7 MHz
30m10 MHz
20m14 MHz
17m18 MHz
15m21 MHz
12m24 MHz
10m28 MHz
6m50 MHz
MUF 24h -- MHz
☀ Solar & Geomagnetic
X-RAY
--
PROTON
--
Kp
--
SFIF10.7 --
SSNEISN --
AuroraMLATa --°
⚠ NOAA Scales
RRadiationR0
SSolar particlesS0
GGeomagneticG0
Type IVRF NoiseNone
◉ D-Layer Absorption
QTH DETECTING...
f(-1dB)DX -- MHz
f(-3dB)NVIS -- MHz
📡 Ionosonde: --
URSI / Time -- --
CSconfidence --%
Delaydata age -- min
F2 Layer
foF2-- MHz
fxI-- MHz
hF2-- km
MUFD-- MHz
OWFD-- MHz
MD--
F1 Layer
foF1-- MHz
hmF1-- km
F Layer
fmin-- MHz
fminF-- MHz
hF-- km
E Layer
foE-- MHz
fminE-- MHz
hE-- km
Es Layer
foEs-- MHz
MUFEs-- MHz
fminEs-- MHz
hEs-- km
Ea Layer
foEa-- MHz
MUFEa-- MHz
hEa-- km
📖 Basic Use
▸ DX (Long Distance) Operation:
Stay BELOW the maximum usable frequency MUFD, MUFEs or MUFEa, best around the optimal working frequency OWFD, and ABOVE both fminF (respectively fminEs or fminEa) and f-1dB.
▸ NVIS (Local/Regional) Operation:
Stay BELOW the critical frequency foF2, ABOVE fmin and, if possible, also above f-3dB.
▸ Current Recommendation:
DX: Set QTH for recommendation
NVIS: Set QTH for recommendation
🌐 Ionosonde Network — 0 Stations
URSIStationfoF2MUFDfoEsCS
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JSON API • SWX BULLETIN v1.2 • 73 DE ON4AA