OE3MJA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Austria Most frequent locator attributed to this token: JN78

Receiver-side FT8 activity involving OE3MJA, decoded by SO8OO in southeastern Poland. 197 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-20.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 197 FT8 messages attributed to OE3MJA as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (51%), followed by 40 m (43%) and 10 m (7%). Most decodes (71%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -4 dB.

Overview

197
Messages attributed
17
UTC dates decoded
48
Active 15-min windows
-4 dB
Estimated median S/N

Bands

40m · 84 20m · 100 10m · 13
First attributed message: 2026-06-12
Last attributed message: 2026-09-20 18:25 UTC

Observed FT8 message patterns

Attributed sample
197 messages
Active dates
17 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-15 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 47, strong (≥ -8 dB) 135.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with OE3MJA in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to OE3MJA

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
JN78 · 96 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
518 km (approx.)
Last such locator decoded
2026-09-20 18:25 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandOE3MJA S/NCounterpartCounterpart S/NMsgsCapture
09-20 18:25 40m - / -5 DL3JHK -2 / - 4 ✓ Closing fragment
09-20 18:22 40m +4 / -14 PA7D -4 / -9 4 ✓ Full exchange observed
08-23 14:48 20m - / - TA3NK -8 / - 8 Partial capture
08-23 14:47 20m - / -7 DL1UDO +3 / - 4 ✓ Closing fragment
08-23 14:47 20m - / - F6FDY -14 / - 4 Partial capture
08-23 10:11 20m - / - F4BYA +1 / - 4 Partial capture
08-23 10:08 20m - / - F5RRS +8 / - 5 Partial capture
08-15 20:00 40m -2 / - OE2LEX -16 / -11 5 Partial capture
08-15 18:49 40m +2 / - DK0ACI - / -13 2 ✓ Closing fragment
08-15 18:48 40m -9 / -1 S55OO -8 / - 3 ✓ Closing observed
08-15 15:05 20m -13 / - R9FDE/P - / - 3 Partial capture
08-09 17:17 20m - / -9 UR3HC -12 / - 3 Partial capture
08-09 14:05 20m -4 / - OE7KTI -21 / -19 3 Partial capture
07-30 18:40 20m - / - G1OVA -19 / - 5 Partial capture
07-30 18:35 20m - / - G1OVA -18 / - 4 Partial capture
07-30 18:22 20m - / - G1OVA -17 / - 9 Partial capture
07-30 18:17 20m - / - G1OVA -18 / - 2 Partial capture
07-30 18:12 20m - / - G1OVA -18 / - 2 Partial capture
07-30 18:07 20m - / - G1OVA -18 / - 4 Partial capture
07-30 17:46 20m -8 / - BG5JGG - / - 4 ✓ Closing fragment
07-30 17:38 20m - / - G1OVA -17 / - 3 Partial capture
07-30 17:33 20m -14 / - A41ZZ - / -19 4 ✓ Closing fragment
07-29 15:11 20m - / - G4DBW -6 / - 2 Partial capture
07-29 14:21 20m - / - PD1ADA -15 / - 7 Partial capture
07-29 14:18 20m - / - PD3PAM -20 / - 2 Partial capture
07-29 12:58 20m - / -3 F1PBZ -12 / - 2 Partial capture
07-24 19:24 20m -1 / - CR7BUJ - / -21 3 ✓ Closing fragment
07-24 19:21 20m 0 / -4 DL1FLW -15 / -16 5 ✓ Full exchange observed
07-24 19:18 20m +6 / -16 EA3GXK -8 / -20 4 ✓ Full exchange observed
07-24 18:51 40m -16 / - SP9NSQ - / -10 2 ✓ Closing fragment
07-24 18:49 40m - / - DB0CUI -17 / - 2 Partial capture
07-24 18:48 40m -14 / -3 SQ8ECJ -9 / -13 5 ✓ Full exchange observed
07-24 18:41 40m - / - RV3YN -20 / - 2 Partial capture
07-24 18:41 40m - / -18 US3EW -14 / - 3 ✓ Closing fragment
07-24 18:37 40m -6 / - IW3GID - / -10 5 ✓ Closing fragment
07-22 10:08 20m +2 / - G5MJF - / -23 2 Partial capture
07-22 10:06 20m +4 / - R2GFD - / -20 2 Partial capture
07-22 10:05 20m +5 / - OZ9ACV - / -13 2 ✓ Closing fragment
07-22 09:49 20m +4 / - DB2QM - / -12 2 ✓ Closing fragment
07-22 09:48 20m - / - PD0JEW -16 / - 2 Partial capture
07-22 09:37 10m - / -16 EB3JT -12 / - 2 ✓ Closing fragment
07-22 09:12 20m - / - ON4AMP -10 / - 2 Partial capture
07-22 09:11 20m - / - DM3YBN -10 / - 2 Partial capture
07-22 09:10 20m -9 / - DL1YS - / +6 2 ✓ Closing fragment
07-22 09:05 20m -2 / +1 SP1ZMO -16 / -7 4 ✓ Full exchange observed
07-22 09:03 20m -2 / - DG3NCZ -7 / +10 5 ✓ Full exchange observed
07-22 08:58 20m -2 / - PE1ARS - / -4 3 ✓ Closing fragment
07-22 08:56 20m -2 / -25 RK3AQ -14 / -16 4 ✓ Full exchange observed
07-22 08:56 20m - / -11 R3LC -3 / - 3 Partial capture
07-22 08:51 20m +1 / -4 F1ODM -10 / -10 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
200045 -19 1592  OE3MJA OE2LEX JN67 (x2)
200200  -2 1030  OE2LEX OE3MJA -11
200245 -16 1735  OE3MJA OE2LEX R+19 (x2)
182145  +4 1083  CQ OE3MJA JN78
182200  -2 1083  OE3MJA PA7D JO23
182215  +4 1082  PA7D OE3MJA -09
182230  -2 1083  OE3MJA PA7D R-14 (x2)
182500  +1 1083  OE3MJA DL3JHK JO62
182500  +5 1040  CQ OE3MJA JN78
182530  -2 1083  OE3MJA DL3JHK JO62 (x3)
20m 
UTC    dB Audio  Message
144730  +2 1704  OE3MJA DL1UDO JO31
144800  -8  671  OE3MJA TA3NK KM39
144800 -14 1084  OE3MJA F6FDY JN33
144800  +4 1705  OE3MJA DL1UDO JO31
144830  -5  671  OE3MJA TA3NK KM39
144830 -11 1084  OE3MJA F6FDY JN33
144830  +3 1705  OE3MJA DL1UDO R-07
144900 -16 1084  OE3MJA F6FDY JN33
144900  +2 1705  OE3MJA DL1UDO 73
145000 -10  671  OE3MJA TA3NK KM39 (x6)
10m 
UTC    dB Audio  Message
155745  -1 1629  UX7QG OE3MJA -10 (x2)
155845  +3 1628  CQ OE3MJA JN78 (x2)
155945  -2 1628  F4JYH OE3MJA -17 (x3)
140900 -13 1624  OE3MJA IK1MJK/P JN35 (x2)
131315 -24 1732  OE3MJA EB3JT JN01
131615  -8 1733  OE3MJA R3WCH KO81 (x2)
093700 -11  596  OE3MJA EB3JT R-16 (x2)
093800 -11 2586  OE3MJA PC9K JO22

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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