JL1SAM — 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: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving JL1SAM, decoded by SO8OO in southeastern Poland. 89 FT8 messages attributed to this token as transmitter, on 160m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-29.

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 89 FT8 messages attributed to JL1SAM as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 160 m (7%) and 40 m (1%). Most decodes (67%) fell within the six-hour window 10:00-16:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -3 dB.

Overview

89
Messages attributed
8
UTC dates decoded
17
Active 15-min windows
-3 dB
Estimated median S/N

Bands

First attributed message: 2026-06-11
Last attributed message: 2026-10-29 21:15 UTC

Observed FT8 message patterns

Attributed sample
89 messages
Active dates
8 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-13 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 67.

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.

Most frequent locator attributed to JL1SAM

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
PM95 · 56 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,693 km (approx.)
Last such locator decoded
2026-10-29 20:06 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 UTCBandJL1SAM S/NCounterpartCounterpart S/NMsgsCapture
10-29 21:27 160m - / -10 SM2LIY -4 / - 2 ✓ Closing fragment
10-29 21:14 160m - / -14 IW4EGP 0 / - 4 ✓ Closing fragment
10-29 21:14 160m -13 / -20 ON4IQ +9 / -23 4 Partial capture
10-29 21:12 160m - / - IK5SRB -5 / - 8 Partial capture
10-29 21:12 160m - / -13 EA7ALL -7 / - 4 ✓ Closing fragment
10-29 21:11 160m - / -12 OH5KNL -6 / - 3 ✓ Closing fragment
10-29 21:08 160m - / -14 EC6AAE -5 / - 2 ✓ Closing fragment
10-29 21:06 160m - / -25 F8FKI 0 / - 2 ✓ Closing fragment
10-29 21:06 160m - / -15 LA0FA -2 / - 9 ✓ Closing fragment
10-29 21:04 160m - / -20 IW4EGP +4 / - 5 Partial capture
10-29 21:03 160m - / -22 ON8DM -1 / - 2 Partial capture
10-29 21:01 160m - / -17 DF2UU +9 / - 2 Partial capture
10-29 20:59 160m - / -14 EU1KY +14 / - 3 ✓ Closing fragment
10-29 20:53 160m - / - ON4IQ +12 / - 2 Partial capture
10-29 20:51 160m - / -17 RA6MQ/P +6 / - 3 ✓ Closing fragment
10-29 20:48 160m -13 / - LA9GX -7 / -20 2 ✓ Closing observed
10-29 20:46 160m -13 / -21 G0BNR -14 / - 3 ✓ Closing observed
10-29 20:42 160m - / -10 LY5W +10 / - 4 ✓ Closing fragment
10-29 20:41 160m - / - IK0PHY -4 / - 3 Partial capture
10-29 20:40 160m - / -20 DK7ZT -16 / - 5 Partial capture
10-29 20:40 160m - / -16 IS0ZOD -6 / - 2 ✓ Closing fragment
10-29 20:39 160m - / -14 IW0RGN 0 / - 5 ✓ Closing fragment
10-29 20:39 160m - / - EA3A -7 / - 4 Partial capture
10-29 20:38 160m - / - LY5W +8 / - 2 Partial capture
10-29 20:38 160m - / -9 UA4CC -11 / - 2 ✓ Closing fragment
10-29 20:37 160m - / -13 ON7NQ +5 / - 2 ✓ Closing fragment
10-29 20:17 160m -17 / -16 SV8JE -2 / -10 4 ✓ Full exchange observed
10-29 20:16 160m - / - UT7UA +1 / - 6 Partial capture
10-29 20:15 160m - / -16 E73S +4 / - 2 ✓ Closing fragment
10-29 20:13 160m - / -14 IW0RGN -2 / - 2 Partial capture
10-29 20:12 160m - / -23 F5UKW -1 / - 3 ✓ Closing fragment
10-29 20:07 160m - / -12 F1PBZ -3 / - 4 Partial capture
10-29 20:07 160m - / - PA3DUU -8 / - 3 Partial capture
10-28 20:50 160m - / -13 R5WW +4 / - 2 ✓ Closing fragment
10-28 20:21 160m - / - LZ2ZG +5 / - 2 Partial capture
10-10 15:06 40m - / -15 R4PFY -18 / - 2 Partial capture
09-02 15:49 40m - / -6 RD7LC +8 / - 2 ✓ Closing fragment
09-02 15:47 40m - / -22 I8FOQ -5 / - 3 Partial capture
08-30 09:37 20m - / -5 R6LNH/P +8 / - 2 ✓ Closing fragment
08-30 09:35 20m - / -8 R2UZ/P -10 / - 2 ✓ Closing fragment
08-22 13:44 20m -5 / -10 R6DOB/M +2 / - 2 Partial capture
08-16 15:11 20m - / - IK2TPX -4 / - 2 Partial capture
08-16 15:11 20m - / - UA3ZAB 0 / - 2 ✓ Closing fragment
08-16 15:10 20m - / -18 EA3NE +6 / - 5 ✓ Closing fragment
08-15 08:58 20m - / -13 RO2T -10 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m
UTC    dB Audio  Message
211415  +8 2655  JL1SAM ON4IQ -20
211415  -4  719  JL1SAM IW4EGP -14
211415  -5 1652  JL1SAM IK5SRB JN63
211445 +13 2655  JL1SAM ON4IQ -20
211445  +1  719  JL1SAM IW4EGP RR73
211445  -8 1652  JL1SAM IK5SRB JN63
211515  +7 2655  JL1SAM ON4IQ -20
211515  +1  719  JL1SAM IW4EGP RR73
211515  -4 1652  JL1SAM IK5SRB JN63
211530 -13  525  ON4IQ JL1SAM R-23
211545  +0  719  JL1SAM IW4EGP 73
211545  -3 1652  JL1SAM IK5SRB JN63 (x2)
212745  -2 1549  JL1SAM SM2LIY -10 (x2)
80m
UTC    dB Audio  Message
151200 -15 1440  JL1SAM UA0YDB -01
40m
UTC    dB Audio  Message
154630  +7 2746  JL1SAM RD7LC -07
154730  -4 1190  JL1SAM I8FOQ JN70 (x3)
154930 +10 2746  JL1SAM RD7LC -06 (x2)
155600  -6 2840  <...> JL1SAM R-21
155645 -18 2450  JL1SAM RA3QH -14
150600 -16 1796  JL1SAM R4PFY -15 (x2)
20m
UTC    dB Audio  Message
151100  -3  521  JL1SAM UA3ZAB KO80
151100  -1  565  JL1SAM IK2TPX JN45 (x2)
151200  +2  522  JL1SAM UA3ZAB 73
151200  +6  568  JL1SAM EA3NE JN11 (x4)
132430  -2 2580  JL1SAM R6DOB/M -02
134415  -5 2959  <R6DOB/M> JL1SAM PM95
134430  +2 2580  JL1SAM R6DOB/M -10
093500 -12 2156  JL1SAM R2UZ/P -08 (x2)
093730 +12  405  JL1SAM R6LNH/P -05 (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.

CW

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

Explore CW reception at SO8OO

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