E74C — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Bosnia-Herzegovina Most frequent locator attributed to this token: JN93

Receiver-side FT8 activity involving E74C, decoded by SO8OO in southeastern Poland. 439 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 16 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-09-17.

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 439 FT8 messages attributed to E74C as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (79%), followed by 40 m (8%) and 10 m (5%). Most decodes (97%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

439

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 15 60m · 345 40m · 36 20m · 21 10m · 22

First attributed message: 2026-06-13
Last attributed message: 2026-09-17 21:51 UTC

Observed FT8 message patterns

Attributed sample: 439 messages
Active dates: 16 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -17 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 61, moderate (-15 to -9 dB) 256, strong (≥ -8 dB) 122.

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 E74C in decoded directed-looking exchanges:

EC3A · Spain ×2 DL1MEV · Fed. Rep. of Germany ×2 LB6MJ · Norway ×2 US2YW · Ukraine BU2FW · Taiwan EA2EDI · Spain F1PBZ · France R4FDW · European Russia R5AV · European Russia RN6MA · European Russia TA2ED · Asiatic Turkey UN6GO · Kazakhstan

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 E74C

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: JN93 · 208 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 747 km (approx.)
Last such locator decoded: 2026-09-17 21:50 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	E74C S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 21:50	60m	-15 / -	SP4NDY	- / +3	3	✓ Closing fragment
09-14 21:43	40m	- / +5	G8WDZ	-14 / -	5	Partial capture
09-13 18:32	60m	-2 / -	IZ2ACM	- / +5	2	✓ Closing fragment
09-13 18:28	60m	- / -13	G3SUY	-3 / -	3	Partial capture
09-13 18:24	60m	- / -	SP1FJZ	+4 / -	2	Partial capture
09-13 18:21	60m	- / -23	G0ORC	-12 / -	2	✓ Closing fragment
09-13 18:13	60m	+5 / -18	HF5A	+9 / -	4	✓ Closing observed
09-13 18:11	60m	- / +4	F6AOJ	-5 / -	3	✓ Closing fragment
09-13 18:08	60m	- / -14	ON6AA	-9 / -	3	✓ Closing fragment
09-13 18:06	60m	- / -16	SP5MIG	+1 / -	3	✓ Closing fragment
09-13 18:04	60m	- / -16	SQ7LQT	+1 / -	3	✓ Closing fragment
09-13 18:03	60m	- / -14	LY8O	+4 / -	3	✓ Closing fragment
08-30 20:35	60m	-11 / -	GW0KQX	- / -7	9	Partial capture
08-30 20:23	60m	-8 / -4	DL9KM	-18 / -2	22	Partial capture
08-30 20:22	60m	-10 / -1	DL4MFC	-6 / -10	4	✓ Full exchange observed
08-30 20:13	60m	-12 / -14	G4SRT	-9 / -10	4	✓ Full exchange observed
08-30 20:09	60m	-12 / -5	DK7UY	0 / +8	9	✓ Full exchange observed
08-30 20:09	60m	-10 / -	PE1NPS	0 / +6	4	✓ Closing observed
08-30 20:08	60m	-10 / -5	ON5RZ	-13 / -5	5	✓ Full exchange observed
08-30 20:07	60m	- / -16	GM2OT	-8 / -	2	Partial capture
08-30 20:06	60m	-8 / -15	PA1POS	-12 / -7	8	✓ Full exchange observed
08-30 20:05	60m	-6 / -5	DL5DQZ	+2 / +5	7	✓ Full exchange observed
08-29 21:19	60m	-12 / +1	9A5TW	+6 / +10	5	✓ Full exchange observed
08-29 20:22	60m	- / -	OH2GQC	-8 / -	3	Partial capture
08-29 20:20	60m	-8 / -13	EA1RCU	-11 / -6	3	✓ Full exchange observed
08-29 20:17	60m	-6 / -	DL1MEV	-4 / -	6	✓ Closing observed
08-29 20:17	60m	-8 / -5	SP2SCB	-9 / -13	7	✓ Full exchange observed
08-29 20:15	60m	-11 / -18	EI5JL	-17 / -14	4	✓ Full exchange observed
08-29 20:14	60m	-10 / -	SO5WD	- / -14	2	✓ Closing fragment
08-29 20:13	60m	-12 / -3	SV1QEZ	+3 / -	5	✓ Full exchange observed
08-29 20:11	60m	-8 / -2	SP9BGL	+10 / -	6	✓ Full exchange observed
08-29 20:11	60m	-10 / -2	DL7ARV	+9 / +7	7	✓ Full exchange observed
08-29 20:09	60m	-12 / +5	DL1NEO	+2 / +2	6	✓ Full exchange observed
08-29 20:06	60m	-12 / -1	EA7Z	-17 / -2	5	✓ Full exchange observed
08-29 20:06	60m	-8 / -13	OH1LA	-14 / -19	6	✓ Full exchange observed
08-29 07:16	10m	-10 / -	US2YW	- / -	2	✓ Closing fragment
08-21 20:34	40m	+9 / -	HV0KIS	- / -	20	Partial capture
08-20 21:04	20m	- / -11	EC3A	+2 / -	2	✓ Closing fragment
08-20 21:04	20m	- / -10	TA2ED	-7 / -	4	✓ Closing fragment
08-20 20:46	80m	-1 / -16	OH4JFN	-9 / -13	4	✓ Full exchange observed
08-20 20:45	80m	- / -4	OH/SM5MRW	-8 / -	3	✓ Closing fragment
08-20 20:42	80m	-1 / -1	OK7MZ	-8 / +4	10	✓ Full exchange observed
08-20 20:42	80m	0 / -7	PE2JMR	+1 / -1	5	✓ Full exchange observed
08-20 20:40	80m	-2 / -9	HB3YBG	-10 / +3	4	✓ Full exchange observed
08-20 20:39	80m	+2 / -3	YT1DDL	-6 / -	4	✓ Full exchange observed
08-20 20:34	60m	-13 / -11	OJ0JR	+6 / -8	5	✓ Full exchange observed
08-20 20:26	60m	-11 / -6	DL6RS	-6 / -24	10	✓ Full exchange observed
08-20 20:24	60m	- / -	DL9KM	-15 / -	5	Partial capture
08-20 20:24	60m	- / -4	F5NAA	-2 / -	2	Partial capture
08-20 20:22	60m	-12 / -8	EC3A	-18 / +9	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
183245  +0 2111  IZ2ACM E74C RR73
183315  -3 2111  CQ E74C JN93 (x11)
215045 -15 1561  SP4NDY E74C +03 (x3)

40m

UTC    dB Audio  Message
204000 +12 2938  HV0KIS E74C JN93 (x10)
214300 -15 2408  E74C G8WDZ IO82 (x5)

10m

UTC    dB Audio  Message
164330 -18 1778  Z61DX E74C JN93 (x4)
164730 -19 1779  SA5NTK E74C -04
074515  +1 2990  E74C LZ2VQ KN23 (x3)
091930 -23 1964  E74C DD5GG JN39
071545 -13 2224  CQ E74C JN93                          a1
071615 -10 2223  US2YW E74C +13 (x2)
071715 -10 2223  CQ E74C JN93 (x3)

20m

UTC    dB Audio  Message
061700  -6 2554  CQ E74C JN93 (x2)
061800 -10 2554  EA2EDI E74C +06 (x2)
061900 -15 2555  CQ E74C JN93                          a1
070645 -17 1924  E74C UT4QM KN77 (x3)
205945 -16 2908  E74C 9J2FI R-15
210415  -3 1920  E74C TA2ED -10
210415  -1 1227  E74C EC3A -11
210445  -5 1920  E74C TA2ED -10
210445  +6 1227  E74C EC3A RR73
210515  -9 1920  E74C TA2ED -10 (x2)

80m

UTC    dB Audio  Message
204345  -2 1823  OK7MZ E74C +04
204400 -12 1588  E74C OK7MZ R-01
204415  -3 1822  CQ E74C JN93
204445  +1 1823  OK7MZ E74C -06
204500  -2 1587  E74C OK7MZ R+03
204500  -9 1939  E74C OH/SM5MRW R-04
204530  -9 1588  E74C OK7MZ R+03
204530  -7 1939  <E74C> OH/SM5MRW 73
204545  -3 1823  OK7MZ E74C RR73
204600  -3 1588  E74C OK7MZ 73
204600  -8 1823  E74C OH4JFN KP32
204600  -8 1939  E74C OH/SM5MRW
204615  -5 1822  OH4JFN E74C -13
204630 -10 1823  E74C OH4JFN R-16
204645  +3 1822  OH4JFN E74C RR73

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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