SM5UNR — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO88

Receiver-side FT8 activity involving SM5UNR, decoded by SO8OO in southeastern Poland. 420 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 35 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-10-26.

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 420 FT8 messages attributed to SM5UNR as the transmitting token by decoded message structure across 35 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (45%), followed by 60 m (36%) and 40 m (15%). Most decodes (56%) 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

420
Messages attributed
35
UTC dates decoded
84
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 20 60m · 150 40m · 61 20m · 189
First attributed message: 2026-07-07
Last attributed message: 2026-10-26 17:41 UTC

Observed FT8 message patterns

Attributed sample
420 messages
Active dates
35 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-21 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 114, moderate (-15 to -9 dB) 144, strong (≥ -8 dB) 162.

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 SM5UNR 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 SM5UNR

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
JO88 · 178 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,001 km (approx.)
Last such locator decoded
2026-10-26 17:33 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 UTCBandSM5UNR S/NCounterpartCounterpart S/NMsgsCapture
10-26 17:40 60m -5 / -4 ON4AZM -8 / - 4 ✓ Closing observed
10-26 17:38 60m -12 / - DK7ZT - / -19 4 ✓ Closing fragment
10-26 17:35 60m - / +6 DK7ZT -14 / - 2 Partial capture
10-26 17:33 60m -17 / +6 F1LPT/P -16 / -7 5 ✓ Full exchange observed
10-24 08:44 40m - / - DH2NJS -10 / - 4 Partial capture
10-21 19:39 40m - / 0 F4JTP +3 / - 2 ✓ Closing fragment
10-21 19:03 40m - / - F5LMJ -19 / - 2 ✓ Closing fragment
10-21 13:12 40m - / +6 DK6WS -22 / - 2 ✓ Closing fragment
10-21 13:06 40m - / - SP4WJ -12 / - 3 ✓ Closing fragment
10-21 13:06 40m - / -10 OT4R -21 / - 3 Partial capture
10-21 13:02 40m - / - OH1TEV -10 / - 2 Partial capture
10-21 13:01 40m - / -2 OM2IB +3 / - 2 ✓ Closing fragment
10-15 21:12 60m -8 / - PA7FB - / -16 6 Partial capture
10-15 21:10 60m -12 / +4 F6FHZ -19 / -5 3 Partial capture
10-15 21:07 60m -13 / - TF1A - / +5 3 ✓ Closing fragment
10-12 19:13 40m -20 / - BH3HAO - / - 2 Partial capture
10-12 19:05 40m - / - G8KHF -8 / - 6 Partial capture
10-12 19:03 40m - / -8 IK6DLK -5 / - 4 Partial capture
10-12 19:01 40m -22 / - R1ZBB - / +2 2 Partial capture
10-11 17:36 40m - / -12 EW8AAC -8 / - 2 ✓ Closing fragment
10-09 15:17 40m - / -10 YL3CW -8 / - 2 ✓ Closing fragment
10-04 18:47 40m - / +4 DJ3JA -8 / - 2 ✓ Closing fragment
10-04 18:37 40m - / -15 SP8RPA -7 / - 2 ✓ Closing fragment
10-04 18:36 40m - / -21 YO4GIY +2 / - 2 ✓ Closing fragment
09-21 19:08 40m - / - R3MDA 0 / - 2 Partial capture
09-21 19:08 40m -6 / -6 UB1CCL -9 / +8 5 ✓ Full exchange observed
09-21 19:05 40m -13 / -7 LA2GCA -8 / -1 3 ✓ Full exchange observed
09-21 16:36 40m -12 / - PA7ZZ -3 / - 2 ✓ Closing observed
09-21 16:32 40m -14 / -12 HA7TM +12 / +3 6 ✓ Full exchange observed
09-21 16:32 40m - / - OE8PIT +6 / - 4 Partial capture
09-21 16:27 60m -12 / +2 DL4YDR -13 / -8 5 ✓ Full exchange observed
09-19 20:21 40m -12 / - F4NFM -12 / -16 4 Partial capture
09-19 20:21 40m - / - IZ5MMT +8 / - 2 Partial capture
09-19 20:20 40m +2 / -5 RW3ZC +5 / -9 4 ✓ Full exchange observed
09-19 20:19 40m - / - LA2GCA -8 / - 2 Partial capture
09-19 20:18 40m -8 / -13 9A1CCB +14 / -1 5 ✓ Full exchange observed
09-19 20:17 40m -6 / - SP6RW - / -11 2 ✓ Closing fragment
09-19 20:14 40m - / -1 DH2YBG +2 / - 3 ✓ Closing fragment
09-19 20:02 60m - / +9 DK7ZT -12 / - 3 Partial capture
09-19 19:59 60m -1 / -6 SP4MPF -15 / -13 10 ✓ Full exchange observed
09-19 19:58 60m +6 / +4 DG7AK -9 / -6 7 ✓ Full exchange observed
09-19 19:57 60m - / - OE9GWV -9 / - 4 Partial capture
09-19 19:56 60m +2 / - ON7GB +4 / - 5 ✓ Closing observed
09-19 19:54 60m 0 / +9 OK1BN +12 / +10 8 ✓ Full exchange observed
09-19 19:53 60m 0 / - TM60LOUV - / -17 3 ✓ Closing fragment
09-19 19:51 60m +4 / - DD6WF +10 / +2 5 ✓ Full exchange observed
09-19 19:51 60m - / - OE9GWV -8 / - 2 Partial capture
09-19 19:48 60m - / - ON7GB +7 / - 9 Partial capture
09-19 19:47 60m - / - EB3JT -7 / - 6 Partial capture
09-19 19:47 60m - / - SQ2BXI -6 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
173400 -16 1893  SM5UNR F1LPT/P +06
173415 -17 1954  F1LPT/P SM5UNR R-07
173430 -17 1893  SM5UNR F1LPT/P RR73
173445 -16 1954  F1LPT/P SM5UNR 73
173500 -14 2483  SM5UNR DK7ZT +06 (x2)
173815  -8 2485  DK7ZT SM5UNR R-19 (x4)
174030  -9 2484  SM5UNR ON4AZM JO11 (x2)
174115  -5 2485  ON4AZM SM5UNR RR73
174130  -8 2485  SM5UNR ON4AZM 73
174145 -17 1941  OH5YZ SM5UNR R+06
40m 
UTC    dB Audio  Message
130715 -21 1457  SM5UNR OT4R -10
130815 -11 2538  SM5UNR SP4WJ 73
131115 -22 2111  R9OFA SM5UNR JO88
131200 -22 1895  SM5UNR DK6WS +06 (x2)
190300 -21 1158  SM5UNR F5LMJ JN28 (x2)
193930  +2 2021  SM5UNR F4JTP +00 (x2)
205745 -24 2537  SM5UNR F1PBZ -08
084000 -21 2157  SM5UNR PD1AC R-12
084415 -13 2318  SM5UNR DH2NJS JO50 (x4)
20m 
UTC    dB Audio  Message
131230 -20 1956  SM5UNR LZ1RAY RR73
131300  +8 1522  SM5UNR GJ0KYZ IN89 (x4)
132245 -11  525  SM5UNR R4CF -10 (x2)
051315 -13 2403  EP2AES SM5UNR JO88
052000 -10 1522  SM5UNR DG3BZ JO31
052030 +16  679  SM5UNR F1PBZ -03
052145 -20 2029  CQ SM5UNR JO88 (x2)
185300  +3  485  SM5UNR 7X2KF -14
070630  +4 1329  SM5UNR YO5PHL KN16
071215  -5 1182  SM5UNR UB4CJS RR73

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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