GJ0KYZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Jersey Most frequent locator attributed to this token: IN89

Receiver-side FT8 activity involving GJ0KYZ, decoded by SO8OO in southeastern Poland. 19,831 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 105 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 19,831 FT8 messages attributed to GJ0KYZ as the transmitting token by decoded message structure across 105 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (66%), followed by 40 m (25%) and 10 m (9%). The busiest six-hour window was 09:00-15:00 UTC, containing 46% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -5 dB.

Overview

19,831

Messages attributed

105

UTC dates decoded

1,404

Active 15-min windows

-5 dB

Estimated median S/N

Bands

40m · 4,898 20m · 13,178 10m · 1,755

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 08:06 UTC

Observed FT8 message patterns

Attributed sample: 19,831 messages
Active dates: 105 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -16 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2,149, moderate (-15 to -9 dB) 4,829, strong (≥ -8 dB) 12,853.

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 GJ0KYZ in decoded directed-looking exchanges:

IW5ALZ · Italy ×25 IK4LZH · Italy ×8 IW2MLJ · Italy ×8 HA3GX · Hungary ×7 SQ8AA · Poland ×7 F1IQH · France ×6 M0IEP · England ×6 OK5AG/P · Czech Republic ×5 PD2WL · Netherlands ×5 IK1MJK · Italy ×4 DL1GKH · Fed. Rep. of Germany ×4 F4HSB · France ×4

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 GJ0KYZ

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: IN89 · 9,193 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,775 km (approx.)
Last such locator decoded: 2026-09-12 08:03 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 UTC	Band	GJ0KYZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 08:05	40m	-16 / -11	SQ9BDB	-6 / -	3	✓ Closing observed
09-20 08:03	40m	- / +2	DD1OO	-9 / -	2	✓ Closing fragment
09-20 08:02	40m	-24 / -	DL5AX	-17 / -5	3	✓ Closing observed
09-20 08:01	40m	- / -14	DF0PDF	-1 / -	2	✓ Closing fragment
09-20 07:55	40m	-21 / -	HB9HDK	- / -2	2	✓ Closing fragment
09-20 07:51	40m	-12 / -	EA1AUM	- / -2	3	Partial capture
09-20 07:42	40m	-18 / -	G0RQL	- / -2	2	Partial capture
09-20 07:40	40m	- / -	HB9MXY	-5 / -	2	Partial capture
09-20 07:38	40m	-18 / -	F4FSY	- / -3	2	✓ Closing fragment
09-20 07:37	40m	-12 / -	9A4ZM	- / +1	2	Partial capture
09-20 07:35	40m	-12 / -	DL9PN	- / -2	2	Partial capture
09-20 07:34	40m	-12 / -	EA2EED	- / -4	2	✓ Closing fragment
09-20 07:32	40m	-18 / -	DF5FT	-12 / +1	3	✓ Closing observed
09-20 07:28	40m	-4 / -11	DD7FC	-2 / +3	4	✓ Full exchange observed
09-20 07:27	40m	- / -13	SP2EOE	-1 / -	3	Partial capture
09-20 07:24	40m	-8 / -	W4SBH	- / +6	2	Partial capture
09-20 07:21	40m	- / 0	DB8WK	-1 / -	2	Partial capture
09-20 07:21	40m	-13 / -16	SP3KZ	-9 / -10	5	Partial capture
09-20 07:20	40m	-16 / -	PD1ADA	- / +2	2	✓ Closing fragment
09-20 07:18	40m	-5 / -	M6XZD	- / -1	3	✓ Closing fragment
09-20 07:18	40m	- / -	SP9DGO	-12 / -	2	Partial capture
09-20 07:17	40m	- / 0	DB8WK	0 / -	4	Partial capture
09-20 07:13	40m	- / -18	SP3KZ	-12 / -	2	Partial capture
09-20 07:12	40m	-4 / +1	SP6TID	+9 / +2	4	✓ Full exchange observed
09-20 07:09	40m	-12 / -13	HA1ZW	+1 / -6	10	Partial capture
09-20 07:08	40m	-16 / +4	F5PJG	-10 / -	3	✓ Closing observed
09-20 07:06	40m	-16 / -	M7MJW	- / +9	2	Partial capture
09-20 07:03	40m	-14 / -	IU1WVQ	- / -2	3	✓ Closing fragment
09-20 06:57	40m	-7 / -	GM7JQK	- / -5	3	✓ Closing fragment
09-20 06:55	40m	-13 / -	EA3HMM	- / -1	2	✓ Closing fragment
09-20 06:54	40m	-6 / -	PB2A	-6 / +5	3	✓ Full exchange observed
09-20 06:49	40m	-2 / -	DK3MM	-5 / -8	4	✓ Closing observed
09-20 06:48	40m	-3 / -	SP9UPH	- / -1	3	Partial capture
09-20 06:46	40m	-14 / -	ON5EA	- / 0	2	✓ Closing fragment
09-20 06:44	40m	-5 / -19	IU1VQG	-11 / -4	4	✓ Full exchange observed
09-20 06:43	40m	- / -8	OZ8XZL	-7 / -	3	✓ Closing fragment
09-20 06:38	40m	-14 / +2	OH3MB	-13 / -13	6	✓ Full exchange observed
09-20 06:38	40m	-13 / -7	SO100PKP	-8 / -2	2	Partial capture
09-20 06:37	40m	-6 / -	PA1PDM	-14 / +4	3	✓ Closing observed
09-20 06:35	40m	-7 / -	IW2NEF	-12 / -5	4	✓ Full exchange observed
09-20 06:31	40m	-7 / -	TM60LOUV	- / +1	2	Partial capture
09-20 06:29	40m	-10 / -	KW8L	- / +6	3	Partial capture
09-20 06:29	40m	-2 / -1	OZ1KZX	-9 / -	3	✓ Closing observed
09-20 06:27	40m	-2 / -	IK7YZB	- / +5	2	✓ Closing fragment
09-20 06:24	40m	-4 / -	F4NHL	- / -5	3	Partial capture
09-20 06:21	40m	-4 / -	ON4FL	-11 / +3	5	✓ Full exchange observed
09-20 06:20	40m	-4 / +5	DL9FA	0 / +2	4	✓ Full exchange observed
09-20 06:18	40m	-4 / +10	MI0NWA	-11 / -	3	✓ Closing observed
09-20 06:14	40m	-4 / -	OH3DJP	- / -3	2	Partial capture
09-20 06:13	40m	-5 / +1	G0OYQ	-10 / +4	3	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
075345 -14 2262  F4NGK GJ0KYZ +02
075515 -20 1852  HB9HDK GJ0KYZ -02 (x2)
075830 -13  821  GJ0KYZ HB9LBR 73
080100  -4 2467  GJ0KYZ DF0PDF R-14 (x2)
080215 -23 1655  DL5AX GJ0KYZ -05 (x2)
080300 -17 1667  GJ0KYZ DL5AX 73
080330 -11 2231  GJ0KYZ DD1OO R+02 (x2)
080515 -20 1765  GJ0KYZ F5ADE 73
080545  -5 2389  GJ0KYZ SQ9BDB R-11
080600 -16 2390  SQ9BDB GJ0KYZ RR73
080615  -8 2389  GJ0KYZ SQ9BDB 73

160m

UTC    dB Audio  Message
191730  -7 1040  GJ0KYZ SP2LLP JO94 (x6)
171700  +3  458  GJ0KYZ OM2WQ JN88 (x3)

80m

UTC    dB Audio  Message
193745  +3 2451  GJ0KYZ DL1GLO R+01 (x8)
192245  -4 1690  GJ0KYZ UT3XM -18 (x4)
065015 -24 1959  GJ0KYZ DG1EKK JO31
073215  +8  505  GJ0KYZ OM8BCD KN08 (x2)

20m

UTC    dB Audio  Message
181315  +5 2488  TK/F6FDY GJ0KYZ IN89
181415  +4  821  OM6AI GJ0KYZ IN89 (x2)
181645  +1 1310  IW0CGT GJ0KYZ IN89
181715  +9  542  DG8ABG GJ0KYZ IN89 (x3)
181830  +1  542  GJ0KYZ DG8ABG -02
181830 +17  482  CQ GJ0KYZ IN89
181900  -2  542  GJ0KYZ DG8ABG -02
181900 +15  482  CQ GJ0KYZ IN89
181915  -4  483  GJ0KYZ YB6XFI NJ93
181915 -11 3012  GJ0KYZ DL5KSS JO31
182000 +12  482  DL5KSS GJ0KYZ -15
182045  +5 3012  GJ0KYZ DL5KSS R-17

60m

UTC    dB Audio  Message
180715  -1 2457  GJ0KYZ 5P1KZX JO57

10m

UTC    dB Audio  Message
161530  -5  930  CQ GJ0KYZ IN89 (x2)
161645 -11 1714  OK1VKX GJ0KYZ +06 (x2)
161745  +0 2763  4X5MZ GJ0KYZ -09 (x2)
161915 -11 2057  SP7AM GJ0KYZ -04 (x2)
162015  -7 2588  RW3FY GJ0KYZ -14 (x3)
162130 -22 1994  GJ0KYZ G4TTQ JO01
162130  -3 2647  CQ GJ0KYZ IN89 (x2)
162230 -11 2221  UR5WAQ GJ0KYZ -16

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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