SM5CBN — 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: JO78

Receiver-side FT8 activity involving SM5CBN, decoded by SO8OO in southeastern Poland. 215 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 13 UTC dates in the available aggregate history. Observed between 2026-08-17 and 2026-10-16.

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 215 FT8 messages attributed to SM5CBN as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 80 m (32%) and 60 m (13%). Several six-hour UTC windows tied for the largest share (87%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -4 dB.

Overview

215
Messages attributed
13
UTC dates decoded
29
Active 15-min windows
-4 dB
Estimated median S/N

Bands

160m · 12 80m · 69 60m · 28 40m · 106
First attributed message: 2026-08-17
Last attributed message: 2026-10-16 08:18 UTC

Observed FT8 message patterns

Attributed sample
215 messages
Active dates
13 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-16 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 46, strong (≥ -8 dB) 145.

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 SM5CBN 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 SM5CBN

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
JO78 · 118 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,048 km (approx.)
Last such locator decoded
2026-10-16 08:18 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 UTCBandSM5CBN S/NCounterpartCounterpart S/NMsgsCapture
10-16 08:16 40m -16 / - HB9ITZ/P - / - 4 Partial capture
10-12 21:33 40m - / -13 EC2ASL -15 / - 3 ✓ Closing fragment
10-12 11:56 10m - / +3 EA7Z 0 / - 2 Partial capture
10-04 06:50 40m -21 / - XE1PM - / - 2 Partial capture
09-28 19:43 60m -11 / -4 GM3CQD -10 / +9 5 ✓ Full exchange observed
09-28 19:40 60m -7 / -1 G4ZFJ +5 / - 8 ✓ Full exchange observed
09-28 19:39 60m -6 / +9 ES2IPA -10 / +8 5 ✓ Full exchange observed
09-28 19:38 60m -7 / - DD4U - / - 3 ✓ Closing fragment
09-28 19:35 60m -7 / - 4X5EF - / - 5 Partial capture
09-24 22:08 40m - / - ON8WR -22 / - 2 Partial capture
09-24 22:07 40m - / -1 F1PBZ +2 / - 2 ✓ Closing fragment
09-24 22:04 40m - / -10 GX7RAF/P -6 / - 2 ✓ Closing fragment
09-24 22:03 40m - / - F4BYA +17 / - 4 Partial capture
09-24 21:40 40m 0 / -5 KB1HY -23 / -17 7 Partial capture
09-24 21:37 40m -2 / -11 K1SM -18 / -25 4 ✓ Full exchange observed
09-24 21:29 160m - / - DL1IP 0 / - 5 Partial capture
09-24 21:28 160m -8 / -15 SP6LUV +13 / - 5 ✓ Full exchange observed
09-24 21:27 160m -12 / - SP9GCZ - / - 2 Partial capture
09-24 21:23 160m -13 / - RI1FJZ - / - 6 Partial capture
09-23 07:57 60m -18 / +4 DK2CC -18 / - 5 ✓ Full exchange observed
09-23 07:55 60m -17 / - G0AZH - / +3 5 Partial capture
09-23 07:47 60m -18 / - F5RMK - / - 2 ✓ Closing fragment
09-14 20:47 40m - / +8 DJ0MAB +2 / - 3 ✓ Closing fragment
09-13 19:53 40m -12 / - PD2MAC/P - / - 2 Partial capture
09-13 19:53 40m - / - M1EAG -4 / - 2 Partial capture
09-13 19:45 40m -7 / - G7VGY/P -24 / -10 6 ✓ Closing observed
09-13 19:36 40m -1 / -3 IK1MJK/P -2 / +1 9 ✓ Full exchange observed
09-13 19:34 40m -2 / +7 PD2MAC/P -9 / - 10 Partial capture
09-13 19:31 40m -1 / - 8Z1IT - / - 5 Partial capture
09-13 19:29 40m -5 / - GG4DPI/P - / - 3 Partial capture
09-13 19:27 40m -8 / -2 DK8HC -2 / -1 4 ✓ Full exchange observed
09-13 19:26 40m -2 / - EX7CQ 0 / -1 3 ✓ Closing observed
09-13 19:23 40m -7 / -1 PD2MAC/P -11 / -25 6 ✓ Full exchange observed
09-13 19:21 40m -6 / - EA3IWJ/P - / -23 2 ✓ Closing fragment
09-13 19:13 40m -2 / - DF9HT/P -8 / - 5 ✓ Closing observed
09-12 13:37 40m -14 / - LB5WB - / -8 2 ✓ Closing fragment
09-12 13:33 40m -10 / - OH2DJY -12 / -9 9 ✓ Closing observed
08-31 22:35 80m -4 / - IU7UTX -20 / -17 6 Partial capture
08-31 22:30 80m -9 / - 4X1UF - / +4 5 ✓ Closing fragment
08-31 22:21 80m - / - IU7UTX -21 / - 2 Partial capture
08-31 22:18 80m - / - IU5HIU -20 / - 2 Partial capture
08-31 22:15 80m +3 / - <...> - / - 7 Partial capture
08-31 22:14 80m - / +3 EK/RX3DPK -11 / - 7 Partial capture
08-31 21:48 80m +9 / -8 9A3TGY -7 / - 6 ✓ Closing observed
08-31 21:45 80m - / +5 EK/RX3DPK -9 / - 4 Partial capture
08-27 22:05 40m -13 / - EA8UP -12 / +4 4 ✓ Closing observed
08-25 21:20 40m -6 / - HZ1TT - / - 5 Partial capture
08-20 23:06 40m -18 / - D2UY - / - 3 Partial capture
08-20 23:03 40m -14 / - OA4ENG - / -8 4 ✓ Closing fragment
08-20 22:48 40m 0 / - OA4ENG - / - 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
220445  -5 1942  SM5CBN GX7RAF/P 73
220445 +19 2882  SM5CBN F4BYA JN19
220715  +3 2587  SM5CBN F1PBZ -01 (x2)
220815 -21 1420  SM5CBN ON8WR JO21 (x2)
065030 -22 1776  XE1PM SM5CBN JO78 (x2)
213345 -14  539  SM5CBN EC2ASL IN93 (x3)
081645 -15 1266  HB9ITZ/P SM5CBN JO78 (x4)
10m 
UTC    dB Audio  Message
115630  +0 1067  SM5CBN EA7Z IM67 (x2)
60m 
UTC    dB Audio  Message
194015  -7 1428  ES2IPA SM5CBN RR73
194030  +5  820  SM5CBN G4ZFJ JO01
194030  -6 1625  SM5CBN ES2IPA 73
194045 -11 1428  G4ZFJ SM5CBN +12 (x2)
194130  +5  820  SM5CBN G4ZFJ R-01
194145  -6 1428  G4ZFJ SM5CBN +12
194200  +6  680  SM5CBN G4ZFJ R-01
194215  -8 1428  G4ZFJ SM5CBN RR73
194230  +4  680  SM5CBN G4ZFJ 73
194330 -12 1428  GM3CQD SM5CBN JO78
194345 -13  760  SM5CBN GM3CQD -04
194400 -11 1428  GM3CQD SM5CBN R+09
194415  -8  759  SM5CBN GM3CQD RR73
194430  -9 1428  GM3CQD SM5CBN 73
160m 
UTC    dB Audio  Message
212445 -13  706  RI1FJZ SM5CBN JO78 (x3)
212715 -24  706  SP9GCZ SM5CBN JO78 (x2)
212815  -9  707  SP6LUV SM5CBN JO78
212830 +13 1547  SM5CBN SP6LUV -15
212845  -5  706  SP6LUV SM5CBN R+13
212900 +13 1547  SM5CBN SP6LUV RR73
212915 -10  706  SP6LUV SM5CBN 73
212930  +5  706  SM5CBN DL1IP JN49 (x5)
80m 
UTC    dB Audio  Message
221845  +2 1151  <...> SM5CBN JO78
221900 -20 1263  SM5CBN IU5HIU JN53
222130 -20 1502  SM5CBN IU7UTX JN80 (x2)
223045 -12 1150  4X1UF SM5CBN JO78 (x5)
223500 -19 1502  SM5CBN IU7UTX JN80 (x2)
223545 -14 1151  IU7UTX SM5CBN -17 (x4)

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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