SM5MRQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO89

Receiver-side FT8 activity involving SM5MRQ, decoded by SO8OO in southeastern Poland. 56 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-09-06.

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 56 FT8 messages attributed to SM5MRQ as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 20 m (46%) and 80 m (2%). Most decodes (75%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

56
Messages attributed
9
UTC dates decoded
20
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 1 40m · 29 20m · 26
First attributed message: 2026-06-17
Last attributed message: 2026-09-06 22:44 UTC

Observed FT8 message patterns

Attributed sample
56 messages
Active dates
9 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-19 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 21.

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 SM5MRQ 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 SM5MRQ

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
JO89 · 36 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,106 km (approx.)
Last such locator decoded
2026-09-06 22:44 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 UTCBandSM5MRQ S/NCounterpartCounterpart S/NMsgsCapture
09-09 22:33 40m - / -22 PW8BR -8 / - 2 ✓ Closing fragment
09-09 22:29 40m - / -9 F4IVG -14 / - 3 Partial capture
09-09 22:08 40m - / - F5PBG -1 / - 2 Partial capture
09-06 22:44 40m - / - PD0IFI +3 / - 2 Partial capture
09-06 22:43 40m -1 / - HK3X - / - 3 Partial capture
09-06 22:40 40m -4 / -11 EB3JT -9 / - 5 ✓ Closing observed
09-06 22:36 40m -2 / +1 EX7CQ +2 / -25 16 ✓ Full exchange observed
09-06 22:35 40m - / - PD0IFI +3 / - 3 Partial capture
09-06 22:35 40m -3 / 0 DK8HC 0 / - 5 Partial capture
09-06 22:35 40m - / - IU8RFW +2 / - 2 ✓ Closing fragment
09-06 22:34 40m -3 / -11 PD0LBY -8 / - 3 ✓ Closing observed
09-06 22:34 40m - / -16 UA9CR -4 / - 5 Partial capture
09-06 22:33 40m -3 / +3 LZ5UY +2 / - 4 ✓ Full exchange observed
08-28 13:11 20m - / - MW0AXD -9 / - 3 Partial capture
08-24 07:15 20m - / -1 RN6MA +15 / - 3 Partial capture
08-24 07:15 20m - / - RW6HP -13 / - 6 Partial capture
08-24 07:14 20m - / - YO4CAI -2 / - 4 Partial capture
08-24 07:12 20m - / - E70SZ +8 / - 4 Partial capture
08-24 07:06 20m -12 / - HC2GRC - / -5 2 Partial capture
08-22 15:50 20m -11 / -9 9M2HUS -16 / - 2 Partial capture
08-21 20:47 40m -10 / - UN7LEW -6 / -7 4 ✓ Closing observed
08-21 20:44 40m -16 / - HV0KIS - / - 2 Partial capture
08-20 21:59 20m -11 / - TJ1GD - / - 2 Partial capture
08-20 21:47 20m -14 / -4 XU7O -6 / - 5 ✓ Closing observed
08-20 18:21 40m -10 / - 9H2LB - / - 2 Partial capture
08-20 18:18 40m - / -11 SP6VXO -1 / - 7 Partial capture
08-17 21:59 20m -18 / - CO8LY - / - 3 Partial capture
08-17 19:25 40m - / - DL2VN -18 / - 2 ✓ Closing fragment
08-17 19:13 40m -12 / - ES4TIX -19 / - 2 ✓ Closing observed
08-17 19:01 40m - / -4 9A1CCB +4 / - 3 ✓ Closing fragment
08-17 18:55 40m -18 / - BD8SN - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
224330  -2 1040  HK3X SM5MRQ JO89 (x3)
224445  +6 1935  SM5MRQ PD0IFI JO32 (x2)
092930 -21 1221  SM5MRQ GJ0KYZ RR73
220800  -1 1090  SM5MRQ F5PBG IN78 (x2)
221300 -11  623  SM5MRQ Z68PX -10
222245 -19 1243  SM5MRQ JY5IB RR73
222930 -15 1867  SM5MRQ F4IVG -09 (x3)
223315  -9  490  SM5MRQ PW8BR -22 (x2)
20m 
UTC    dB Audio  Message
071630 -19 1081  CQ SM5MRQ JO89
071645 +15 2084  SM5MRQ IQ4JO JN63
071645 -16 2432  SM5MRQ F5HNQ IN98
071700 -22 1081  CQ SM5MRQ JO89
071715 -15 1583  SM5MRQ RW6HP LN14
071730 -24 1081  CQ SM5MRQ JO89
071845 -13 1583  SM5MRQ RW6HP LN14 (x3)
094915  -2 1079  RI1FJL SM5MRQ -01 (x2)
131100  -5 1971  SM5MRQ MW0AXD IO81 (x3)
100545 -16 1081  RI1FJL SM5MRQ JO89
80m 
UTC    dB Audio  Message
172830 -12 1003  CQ SM5MRQ JO89

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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