JK1OZS — 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: QM05

Receiver-side FT8 activity involving JK1OZS, decoded by SO8OO in southeastern Poland. 53 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-23.

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 53 FT8 messages attributed to JK1OZS as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (74%), followed by 20 m (21%) and 40 m (6%). Most decodes (100%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -6 dB.

Overview

53
Messages attributed
8
UTC dates decoded
13
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 39 40m · 3 20m · 11
First attributed message: 2026-06-11
Last attributed message: 2026-10-23 16:16 UTC

Observed FT8 message patterns

Attributed sample
53 messages
Active dates
8 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 35.

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 JK1OZS 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 JK1OZS

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
QM05 · 17 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,798 km (approx.)
Last such locator decoded
2026-10-23 16:15 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 UTCBandJK1OZS S/NCounterpartCounterpart S/NMsgsCapture
10-23 16:16 80m - / -15 UA4FKT +12 / - 3 ✓ Closing fragment
10-23 16:16 80m - / - IK5SRB +8 / - 7 Partial capture
10-23 16:15 80m -16 / - OD5ZZ -14 / - 3 ✓ Closing observed
10-22 19:40 80m - / -15 R6ZW +3 / - 3 Partial capture
10-22 18:28 80m - / -12 RM1O +4 / - 2 ✓ Closing fragment
10-22 17:07 160m - / - RJ6B -4 / - 3 Partial capture
10-20 20:54 160m - / - DF7EF +12 / - 3 Partial capture
10-18 20:37 80m - / - SP1RKT -2 / - 2 Partial capture
10-18 20:36 80m - / - RX3VF -13 / - 3 Partial capture
10-18 20:35 80m - / -11 SP6GCU +10 / - 2 Partial capture
10-18 20:34 80m +2 / -20 DO9BAU -5 / - 4 ✓ Closing observed
10-18 20:33 80m 0 / - R2AX -11 / -15 3 ✓ Closing observed
10-18 20:32 80m 0 / -15 LA6OP -5 / -11 5 ✓ Full exchange observed
10-18 20:31 80m - / - YO8CRU -9 / - 4 Partial capture
10-18 20:30 80m - / - F4EGM -17 / - 7 Partial capture
10-18 20:30 80m -1 / -5 YL3KZ -1 / -13 6 ✓ Full exchange observed
10-18 20:29 80m -3 / -8 9A4ZM -3 / -13 4 Partial capture
10-18 20:27 80m -4 / -17 F4JOY -4 / -14 7 ✓ Full exchange observed
10-18 20:27 80m - / - EW8DU -17 / - 4 Partial capture
10-18 20:27 80m - / - PA3KUS -19 / - 4 Partial capture
10-18 20:26 80m -3 / - F6CTT -11 / -9 3 ✓ Closing observed
10-18 20:22 80m -7 / -15 UW5KW +18 / - 3 ✓ Closing observed
10-18 20:19 80m -5 / - IK1UGX -6 / -17 5 Partial capture
10-18 20:19 80m - / - LY1DY +4 / - 2 Partial capture
10-18 20:18 80m -8 / -8 ON6AA +3 / -9 7 ✓ Full exchange observed
10-18 20:18 80m -4 / -17 YU7BW +20 / -5 4 ✓ Full exchange observed
10-13 20:40 80m -20 / -8 UX1AA 0 / - 2 Partial capture
10-13 20:35 80m - / -15 IV3DXW +19 / - 4 ✓ Closing fragment
10-13 20:34 80m - / -11 5B4AMX -10 / - 2 ✓ Closing fragment
10-13 20:31 80m - / - IV3DXW +21 / - 4 Partial capture
10-13 20:30 80m - / -14 HA5MIG +12 / - 6 Partial capture
10-13 20:29 80m - / -17 UA3QQG -8 / - 2 Partial capture
10-13 20:29 80m - / -19 DK7ZT +9 / - 5 Partial capture
10-13 20:26 80m -14 / - EW6BZ +17 / -14 2 ✓ Closing observed
10-13 20:04 80m -14 / -11 ES2AJ +10 / - 4 ✓ Closing observed
10-13 19:17 80m - / -24 RK6OQ -6 / - 4 Partial capture
10-13 19:16 80m - / -20 RU3T +6 / - 4 Partial capture
10-13 19:12 80m - / -14 ES2AJ +7 / - 3 Partial capture
10-11 20:59 80m -16 / - SP1MGM - / - 2 Partial capture
10-11 20:53 80m -15 / -11 SP9TBT -6 / - 4 ✓ Closing observed
10-11 20:50 80m - / -18 SP5MXZ +14 / - 2 ✓ Closing fragment
10-11 20:46 80m -16 / -13 SP7CMW +4 / - 3 ✓ Closing observed
10-11 20:41 80m -12 / -15 SQ8AZT +4 / - 4 Partial capture
10-11 20:37 80m - / -18 YO3FRI +8 / - 2 Partial capture
10-11 20:23 80m -9 / +1 OT7K +18 / - 3 ✓ Closing observed
10-11 20:10 80m - / - IZ8KVW -9 / - 3 Partial capture
10-07 20:24 80m - / -6 HA1TNX +22 / - 2 ✓ Closing fragment
10-07 19:30 80m -15 / - YO4DW -8 / -19 4 ✓ Closing observed
10-06 21:32 80m - / -16 D2UY -11 / - 2 ✓ Closing fragment
10-05 20:26 80m - / - DK3ME 0 / - 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
194115  -2 2356  JK1OZS R6ZW -15 (x2)
161515 -18 2659  OD5ZZ JK1OZS QM05
161600 -14  776  JK1OZS OD5ZZ RR73
161600  +7 1906  JK1OZS IK5SRB JN63
161615 -15 2659  OD5ZZ JK1OZS 73
161630 +11 2659  JK1OZS UA4FKT LO23
161630 +10 1906  JK1OZS IK5SRB JN63
161700 +13 2659  JK1OZS UA4FKT R-15
161700 +10 1906  JK1OZS IK5SRB JN63
161730 +12 2659  JK1OZS UA4FKT 73
161730  +8 1906  JK1OZS IK5SRB JN63 (x4)
160m 
UTC    dB Audio  Message
203315 +20 2791  JK1OZS E73DPR -14 (x2)
203415 -16 2219  JK1OZS RY7F LN04
203415 +20 2791  JK1OZS E73DPR RR73
203445 -16 2219  JK1OZS RY7F LN04 (x3)
203330 +10 2754  JK1OZS SP2HNF RR73
203330  +6 2927  JK1OZS ON4IQ JO20
205400 +13  732  JK1OZS DF7EF JO30 (x3)
170715  -5 2843  JK1OZS RJ6B KN95 (x3)
40m 
UTC    dB Audio  Message
210445 -10 2267  D2ACE JK1OZS QM05 (x2)
210530 -13 2339  JK1OZS D2ACE RR73
210615  -6 2294  V51WH JK1OZS QM05

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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