E74K — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Bosnia-Herzegovina Most frequent locator attributed to this token: JN95

Receiver-side FT8 activity involving E74K, decoded by SO8OO in southeastern Poland. 7,592 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-09-08.

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 7,592 FT8 messages attributed to E74K as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 40 m (15%) and 60 m (13%). The busiest six-hour window was 05:00-11:00 UTC, containing 39% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -4 dB.

Overview

7,592

Messages attributed

UTC dates decoded

451

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 885 60m · 1,000 40m · 1,111 20m · 4,596

First attributed message: 2026-06-20
Last attributed message: 2026-09-08 04:40 UTC

Observed FT8 message patterns

Attributed sample: 7,592 messages
Active dates: 22 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -15 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 628, moderate (-15 to -9 dB) 1,768, strong (≥ -8 dB) 5,196.

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 E74K in decoded directed-looking exchanges:

IW5ALZ · Italy ×20 DL9KM · Fed. Rep. of Germany ×4 DL3YAR · Fed. Rep. of Germany ×3 PD2WL · Netherlands ×3 F1PBZ · France ×3 SP9SOS · Poland ×3 M9VVE · England ×2 DJ7LWD · Fed. Rep. of Germany ×2 M9NTS · England ×2 OK6JP · Czech Republic ×2 HB9ETN · Switzerland ×2 KT4ZG · United States ×2

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 E74K

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: JN95 · 6,233 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 536 km (approx.)
Last such locator decoded: 2026-09-08 04:40 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	E74K S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 05:48	40m	- / -	DL6EBC	-22 / -	2	Partial capture
09-07 21:26	40m	- / -21	EW6BZ	+6 / -	3	✓ Closing fragment
09-07 21:03	40m	- / -16	SP3SXU	-6 / -	3	✓ Closing fragment
09-07 20:41	40m	- / -13	IK8TWV	-3 / -	3	✓ Closing fragment
09-07 20:34	40m	- / -24	IU0TYC	-12 / -	3	✓ Closing fragment
09-07 19:40	40m	- / -18	DF1IH	0 / -	4	✓ Closing fragment
09-07 19:29	40m	- / -9	DD1OO	-1 / -	6	✓ Closing fragment
09-07 19:29	40m	- / -17	F4JOF	0 / -	5	✓ Closing fragment
09-07 19:15	40m	- / -15	OE6GBG	+2 / -	2	✓ Closing fragment
09-07 19:00	40m	- / -	IK5ZPU	+1 / -	4	Partial capture
09-07 18:57	40m	- / -12	DL9DX	+5 / -	3	✓ Closing fragment
09-07 18:25	40m	- / -18	RZ6AKF	+4 / -	2	Partial capture
09-04 10:33	80m	- / -11	OE5ABL	-22 / -	2	Partial capture
09-04 08:32	80m	- / -7	OE4MTI	-13 / -	3	✓ Closing fragment
09-04 07:49	80m	- / -	IN3EQZ	-5 / -	3	Partial capture
09-04 07:30	80m	- / -	YO2BYB	-20 / -	4	Partial capture
09-04 07:19	80m	- / -	ON6AO	-23 / -	3	Partial capture
09-04 06:42	80m	- / -	OM8BCD	+2 / -	2	✓ Closing fragment
09-04 06:02	80m	- / -	DA6SHO	-17 / -	3	Partial capture
09-04 05:49	80m	- / -	DA6SHO	-10 / -	2	Partial capture
09-04 05:46	80m	- / -	DK6QO	-11 / -	9	Partial capture
09-04 05:44	80m	- / -	OE6TNO	-8 / -	2	Partial capture
09-04 05:39	80m	- / -	SQ8AA	+17 / -	3	Partial capture
09-04 05:30	80m	- / -	SM7GIB	+7 / -	11	Partial capture
09-04 05:30	80m	- / -	DL4DP	-18 / -	6	Partial capture
09-04 05:26	80m	- / -	DL4DP	-16 / -	3	Partial capture
09-04 05:24	80m	- / -6	SP5FWT	-1 / -	3	Partial capture
09-04 05:15	80m	- / -	SP9SOS	+10 / -	2	Partial capture
09-04 05:14	80m	- / -	S51WB	-8 / -	3	Partial capture
09-04 04:50	80m	+9 / -17	M8FQT	-15 / -14	8	Partial capture
09-04 04:34	80m	+7 / -3	ON4MAP	-13 / -24	6	Partial capture
09-04 04:25	80m	-1 / -1	DM5CF	-16 / -10	6	✓ Full exchange observed
09-04 04:23	80m	+6 / -6	F1PBZ	-11 / -1	3	✓ Full exchange observed
09-04 04:22	80m	+4 / -	CT2GQA	-24 / -12	3	✓ Closing observed
09-03 05:59	40m	+5 / -8	PI4TS	-9 / -15	11	✓ Full exchange observed
09-03 05:51	40m	+6 / -2	OZ4ABH	-12 / -10	7	✓ Full exchange observed
09-03 05:48	40m	- / +2	S57CT	0 / -	3	✓ Closing fragment
09-03 05:21	40m	+6 / -	SV6JUA	- / -15	5	Partial capture
09-03 05:07	40m	+7 / -2	OZ4MK	-11 / -20	9	Partial capture
09-03 04:52	40m	+6 / -4	OZ4MK	-7 / -18	9	Partial capture
09-03 04:46	40m	+5 / -	KU4XR	- / -24	6	✓ Closing fragment
09-03 04:42	40m	+8 / -	UA3WG	- / -12	2	✓ Closing fragment
09-02 06:11	80m	-8 / -	SM7GIB	-10 / -22	11	Partial capture
09-02 05:55	80m	+2 / -9	DO1SJF	-7 / -17	5	✓ Full exchange observed
09-02 05:45	80m	- / -3	SP5FWT	-4 / -	5	Partial capture
09-02 05:31	80m	+6 / -	SV1DBY	- / -8	3	✓ Closing fragment
09-02 05:29	80m	+6 / -	IZ5JNO	- / -1	2	✓ Closing fragment
09-02 05:25	80m	-2 / -5	SP7FFY	+20 / -17	5	✓ Full exchange observed
09-02 05:23	80m	+2 / 0	HA9OA	+16 / -8	5	✓ Full exchange observed
09-02 05:11	80m	+9 / -11	SP9SOS	+8 / -17	9	✓ 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
204115  -6 1978  E74K IK8TWV JN70 (x3)
210345  -3 1979  E74K SP3SXU JO82 (x3)
212645  +6 2491  E74K EW6BZ KO45 (x3)
213400 -24 1979  CQ E74K JN95 (x2)
050945 -12 1981  E74K IZ4AIF R-06
052815 -12  868  E74K S57BTI JN75
054845 -21 1980  E74K DL6EBC JO31 (x2)

80m

UTC    dB Audio  Message
105830 -23 1456  CQ E74K JN95 (x15)

60m

UTC    dB Audio  Message
035330  -1 1130  CQ E74K JN95 (x15)

20m

UTC    dB Audio  Message
160500 -11 2583  CQ E74K JN95
160530  -9 2583  GM0KTH E74K +08
160545  -6 1590  E74K GM0KTH IO88 (x2)
160630 -13 2583  GM0KTH E74K RR73
160645  -9 1590  E74K GM0KTH R-06
160700 -11 2583  GM0KTH E74K RR73
160730 -13 2583  CQ E74K JN95 (x3)
064230  -6 2285  E74K TA3MPK KM38 (x5)

10m

UTC    dB Audio  Message
153445 -12 1410  E74K F8VNU JN13 (x5)
153915  -2 2530  E74K IU3TOQ JN55
161215  -3 1936  E74K IK4HLQ JN54 (x6)
193015  -7 2530  E74K CR7BOV IM58 (x3)

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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