SM6CAL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO67

Receiver-side FT8 activity involving SM6CAL, decoded by SO8OO in southeastern Poland. 39 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-20 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 39 FT8 messages attributed to SM6CAL as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (87%); the estimated median was -19 dB.

Overview

39
Messages attributed
4
UTC dates decoded
11
Active 15-min windows
-19 dB
Estimated median S/N

Bands

40m · 39
First attributed message: 2026-08-20
Last attributed message: 2026-09-06 15:49 UTC

Observed FT8 message patterns

Attributed sample
39 messages
Active dates
4 UTC dates
Estimated median S/N
-19 dB
Estimated 10th-90th percentile
-23 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 34, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 0.

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 SM6CAL 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 SM6CAL

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
JO67 · 27 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,019 km (approx.)
Last such locator decoded
2026-09-06 15:49 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 UTCBandSM6CAL S/NCounterpartCounterpart S/NMsgsCapture
09-06 15:56 40m - / +2 OH3MB +2 / - 3 Partial capture
09-06 15:42 40m -20 / - DA3W - / -4 2 Partial capture
09-06 15:15 40m - / -6 SP7OK -10 / - 2 ✓ Closing fragment
09-06 15:12 40m - / - OH8NW/P -20 / - 2 ✓ Closing fragment
09-06 15:01 40m - / +6 SP9GCZ -3 / - 2 ✓ Closing fragment
09-06 14:44 40m - / - DL6UCK 0 / - 2 Partial capture
09-06 14:31 40m - / -11 SP3GHC -7 / - 3 ✓ Closing fragment
09-06 14:29 40m - / +7 DL7UMA -9 / - 3 ✓ Closing fragment
09-06 14:26 40m - / -4 DL7UKM -5 / - 6 Partial capture
09-06 14:15 40m - / -18 DL9DE -10 / - 2 ✓ Closing fragment
09-05 16:41 40m -15 / -25 RX3DRC -11 / - 10 ✓ Closing observed
09-05 16:41 40m - / -5 DL2KBQ -2 / - 4 ✓ Closing fragment
09-05 16:39 40m -17 / - OZ2NYB/P - / - 3 Partial capture
09-05 16:25 40m -17 / -3 DK2SHS +10 / - 8 ✓ Closing observed
09-05 16:24 40m -18 / -8 RC2DD -10 / -13 3 Partial capture
09-05 16:20 40m -16 / - M8FQT - / -18 2 Partial capture
09-05 16:18 40m - / - S51PV -10 / - 7 Partial capture
09-05 16:12 40m - / -8 F1PBZ -7 / - 2 Partial capture
09-01 16:22 40m -24 / -14 OE2CAL +8 / - 3 ✓ Closing observed
09-01 16:03 40m - / -6 PE9JAN -11 / - 2 ✓ Closing fragment
08-24 11:12 20m - / - G0OFD -6 / - 7 ✓ Closing fragment
08-24 11:09 20m - / - F4BYA +2 / - 3 Partial capture
08-24 11:09 20m - / -6 PD8RB -5 / - 3 Partial capture
08-24 10:40 20m - / -10 R7OV -10 / - 7 Partial capture
08-24 10:24 20m - / -20 DK4BP -18 / - 2 Partial capture
08-24 10:00 20m - / -5 DH2RL -14 / - 3 ✓ Closing fragment
08-24 09:50 20m - / -19 PD1HBL -18 / - 5 Partial capture
08-24 09:46 20m - / -4 OE8PIT +1 / - 3 ✓ Closing fragment
08-24 08:27 10m - / -9 F4FSY -12 / - 2 ✓ Closing fragment
08-20 16:00 40m -18 / - F4NEY - / -18 2 ✓ Closing fragment
08-20 15:56 40m -20 / - M9YLR - / - 3 Partial capture
08-20 15:46 40m -22 / -20 S56LKP -8 / - 8 Partial capture
08-20 15:38 40m -18 / - G6MTI - / -2 2 Partial capture
08-20 15:26 40m -14 / -11 DL5NTA -8 / - 4 ✓ Closing observed
08-16 16:04 40m - / -16 DL7ACA -20 / - 3 ✓ Closing fragment
08-16 15:46 40m - / - DL1LRI -13 / - 3 ✓ Closing fragment
08-16 15:41 40m - / -10 DL1LRI -10 / - 5 ✓ Closing fragment
08-16 15:39 40m - / - SN1A -14 / - 2 Partial capture
08-16 15:37 40m - / - DL9KM -21 / - 2 ✓ Closing fragment
08-16 15:37 40m - / -12 HA8EB -15 / - 5 Partial capture
08-02 13:26 40m - / -12 OK1HEH -20 / - 3 Partial capture
08-01 13:14 20m - / -15 PD0HLA -10 / - 2 ✓ Closing fragment
07-06 17:26 40m - / -23 DH8WF -6 / - 2 ✓ Closing fragment
07-06 16:57 40m - / - DL7LAM -17 / - 3 Partial capture
07-06 16:45 40m - / - UR4QWW -20 / - 4 Partial capture
07-05 17:19 40m - / -13 DD7EE -10 / - 2 ✓ Closing fragment
07-05 17:06 40m - / -10 DL1DEU -18 / - 2 ✓ Closing fragment
07-05 16:59 40m - / -9 DL3HRZ -18 / - 6 ✓ Closing fragment
07-02 17:19 20m - / - UR4QWW -10 / - 3 Partial capture
06-25 08:07 10m - / -3 9A2TN +1 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
150115  -3 1702  SM6CAL SP9GCZ +06 (x2)
151230 -19 1939  SM6CAL OH8NW/P RR73 (x2)
151500  -9 2090  SM6CAL SP7OK -06 (x2)
151945 -10 2091  SM6CAL DL7VBH RR73
153230 -23 1916  M7EOI SM6CAL JO67
153400 -21 1917  G4GIM SM6CAL JO67
154200 -21 1916  DA3W SM6CAL JO67 (x2)
154915 -17 1917  OZ3KLI SM6CAL JO67
155600  -2 1000  SM6CAL OH3MB KP20 (x3)
20m 
UTC    dB Audio  Message
110645  -1 2481  SM6CAL IQ4JO JN63
110745  -5 1943  SM6CAL F1PPH R-12
110915  -7 1943  SM6CAL PD8RB JG32
110915  +2 2914  SM6CAL F4BYA JN19
111015  -7 1943  SM6CAL PD8RB R-06
111015  +2 2914  SM6CAL F4BYA JN19
111045  -2 1943  SM6CAL PD8RB R-06
111045  +3 2914  SM6CAL F4BYA JN19
111245  -4 1943  SM6CAL G0OFD JO02 (x7)
10m 
UTC    dB Audio  Message
101615  -4 2602  SM6CAL IQ4JO JN63
101615 -19 2341  SM6CAL G4DBW JO01
080715  +1  571  SM6CAL 9A2TN R-03 (x2)
082730 -10 1843  SM6CAL F4FSY -09 (x2)

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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