3Z7ROK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO91

Receiver-side FT8 activity involving 3Z7ROK, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-30.

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 68 FT8 messages attributed to 3Z7ROK as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -8 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

40m · 68

First attributed message: 2026-06-30
Last attributed message: 2026-06-30 19:42 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 1 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -15 to -3 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 36.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with 3Z7ROK in decoded directed-looking exchanges:

EC3A · Spain DL8YBL · Fed. Rep. of Germany VO1CH · Canada DL6EL · Fed. Rep. of Germany E2WWA · Thailand EA5FD · Spain F5RRS · France G3TKT · England GB2WWA · England II0WWA · Italy II2WWA · Italy II3WWA · Italy

Most frequent locator attributed to 3Z7ROK

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: JO91 · 26 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 262 km (approx.)
Last such locator decoded: 2026-06-30 19:37 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	3Z7ROK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 16:49	20m	- / -6	DL8YBL	-2 / -	5	✓ Closing fragment
08-30 16:48	20m	- / -	R3DHP	+15 / -	2	Partial capture
08-30 16:39	20m	- / -	EA8DIB	-8 / -	2	Partial capture
06-30 19:40	40m	-8 / +7	G3TKT	-16 / -7	6	✓ Full exchange observed
06-30 19:37	40m	-6 / -	E2WWA	- / -20	3	✓ Closing fragment
06-30 19:29	40m	-14 / -	II1WWA	- / -2	2	Partial capture
06-30 19:25	40m	-12 / -	EA5FD	- / -1	2	✓ Closing fragment
06-30 19:23	40m	-9 / -	DL6EL	-5 / +6	9	✓ Full exchange observed
06-30 19:22	40m	-12 / -	RN3YN	-12 / -5	3	✓ Closing observed
06-30 19:20	40m	-11 / -	IR0WWA	- / -16	5	✓ Closing fragment
06-30 19:19	40m	-8 / -6	F5RRS	-10 / -	5	✓ Closing observed
06-30 19:14	40m	-5 / -	II2WWA	- / 0	5	✓ Closing fragment
06-30 18:17	40m	-10 / -	BG0DLA	- / -16	3	Partial capture
06-30 18:14	40m	-15 / -	II0WWA	- / -	2	✓ Closing fragment
06-30 18:12	40m	-5 / -	E2WWA	- / -	3	Partial capture
06-30 18:02	40m	-6 / -	II8WWA	- / -7	3	✓ Closing fragment
06-30 18:00	40m	-2 / -	BG0DLA	- / -	2	Partial capture
06-30 17:57	40m	-2 / -	8A1WWA	- / -12	2	Partial capture
06-30 17:54	40m	-2 / -	GB2WWA	- / -	2	✓ Closing fragment
06-30 17:53	40m	-10 / -	SP7TF	- / -	2	✓ Closing fragment
06-30 17:51	40m	-15 / -	II9WWA	- / -6	2	✓ Closing fragment
06-30 17:49	40m	- / -	9A5WA	+1 / -	2	Partial capture
06-30 17:48	40m	- / -	DL9KM	-21 / -	4	Partial capture
06-30 17:47	40m	-16 / 0	TM2WWA	-16 / 0	5	✓ Full exchange observed
06-30 17:41	40m	-10 / -	OE3DXA	-11 / -	4	✓ Full exchange observed
06-30 17:39	40m	-9 / -	SN4WWA	-20 / -	3	✓ Closing observed
06-30 17:38	40m	-8 / +4	II3WWA	-22 / +10	4	✓ Full exchange observed
06-30 17:36	40m	- / -11	US3EW	-4 / -	3	Partial capture
06-28 12:06	10m	- / -	US3LX	-12 / -	2	Partial capture
06-28 08:55	10m	- / -	SV2CLJ	-1 / -	3	Partial capture
06-28 08:54	10m	- / -9	A41ZZ	-14 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
182100 -13 2454  3Z7ROK VO1CH RR73
163900  -8 2295  3Z7ROK EA8DIB IL18 (x2)
164530 -15 2333  3Z7ROK BG7BMG -07
164830 +15 2332  3Z7ROK R3DHP KO95
164830  -4 1696  3Z7ROK PE9JAN JO22
164900 +15 2332  3Z7ROK R3DHP KO95
164900  +0 1660  3Z7ROK DL8YBL JO31 (x5)

40m

UTC    dB Audio  Message
192730  -6  773  3Z7ROK DL6EL R+12
192745  -7 1667  DL6EL 3Z7ROK RR73
192800  -7  774  3Z7ROK DL6EL 73
192915 -12 1947  II1WWA 3Z7ROK JO91 (x2)
193230  +1 2484  VJ6X 3Z7ROK R-18
193700  -6 2294  E2WWA 3Z7ROK JO91 (x3)
194030  -7 2294  G3TKT 3Z7ROK -07
194045 -17 2293  3Z7ROK G3TKT R+07
194100  -6 2294  G3TKT 3Z7ROK -07
194115 -15 2293  3Z7ROK G3TKT R+07
194130  -7 2294  G3TKT 3Z7ROK -07 (x2)

10m

UTC    dB Audio  Message
085415 -14  923  3Z7ROK A41ZZ -09 (x2)
085545  +1  641  3Z7ROK SV2CLJ KN10 (x3)
120615 -12 1166  3Z7ROK US3LX KN89 (x2)
121145 -24 1658  3Z7ROK EC3A RR73

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