EA7CRB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IM67

Receiver-side FT8 activity involving EA7CRB, decoded by SO8OO in southeastern Poland. 251 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-07-22 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 251 FT8 messages attributed to EA7CRB as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (70%), followed by 40 m (21%) and 80 m (9%). Several six-hour UTC windows tied for the largest share (91%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

251

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 23 40m · 52 20m · 176

First attributed message: 2026-07-22
Last attributed message: 2026-09-20 20:47 UTC

Observed FT8 message patterns

Attributed sample: 251 messages
Active dates: 14 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -20 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 59, moderate (-15 to -9 dB) 103, strong (≥ -8 dB) 89.

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 EA7CRB in decoded directed-looking exchanges:

ON5HE · Belgium 2E0GKF · England 4Z5PT · Israel 9A4AA · Croatia D2UY · Angola E75C · Bosnia-Herzegovina F4DUZ · France F4FSY · France HA1BF · Hungary HG8LXL · Hungary IK4LZH · Italy LA3BO · Norway

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 EA7CRB

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: IM67 · 184 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,671 km (approx.)
Last such locator decoded: 2026-09-20 20:44 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	EA7CRB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 20:40	80m	- / -14	DK6WS	-4 / -	3	Partial capture
09-20 20:38	80m	- / -14	DK6WS	+2 / -	2	Partial capture
09-20 20:34	80m	- / -	DO9SAM	+3 / -	3	Partial capture
09-20 20:30	80m	- / -16	LZ2VQ	-2 / -	4	✓ Closing fragment
09-20 20:29	80m	- / -8	IQ0AAI	0 / -	2	✓ Closing fragment
09-20 20:25	80m	- / -	LZ2VQ	-6 / -	2	Partial capture
09-20 20:23	80m	- / -14	YO8CRU	-5 / -	3	✓ Closing fragment
09-20 20:23	80m	- / -15	SP3QDM	+18 / -	6	Partial capture
09-20 20:19	80m	- / -9	OK1CT	+10 / -	2	✓ Closing fragment
09-16 20:28	40m	-16 / -	SM7MDI	- / -	2	Partial capture
09-16 20:13	40m	- / -	DK8HC	-6 / -	4	Partial capture
09-15 20:08	40m	- / -	PE1NPS	-7 / -	2	Partial capture
09-15 20:07	40m	- / -4	SV1MOZ	-10 / -	2	Partial capture
09-15 20:05	40m	- / -1	DK7ZT	-3 / -	3	Partial capture
09-09 23:01	40m	-12 / -	TF1PA	- / -	2	Partial capture
09-09 22:56	40m	-11 / -18	UR9QQ	-15 / -9	9	Partial capture
09-09 22:54	40m	-12 / -	VE3NI	- / -	2	Partial capture
09-09 22:54	40m	-15 / -3	UR4QWW	-21 / -9	7	✓ Full exchange observed
09-09 22:51	40m	-13 / +1	MM7FTH	-4 / +8	8	✓ Full exchange observed
09-09 22:50	40m	-10 / -	PD0LBY	- / 0	2	✓ Closing fragment
09-09 22:47	40m	-11 / -	BG7BVI	- / -	3	Partial capture
09-09 22:45	40m	-12 / -	RC9WC	-5 / -10	3	✓ Closing observed
09-09 22:42	40m	-15 / -	BG9MM	- / -	2	Partial capture
09-07 15:26	40m	- / -7	F4FSY	-20 / -	2	Partial capture
09-06 20:34	80m	- / -7	E73DPR	+8 / -	2	✓ Closing fragment
09-01 20:08	40m	-19 / -	RX9WM	- / -25	3	Partial capture
09-01 20:07	40m	-14 / -	ON5LC	- / -	2	Partial capture
08-31 22:18	80m	- / -	LZ2VQ	-3 / -	3	Partial capture
08-31 22:10	80m	- / -	LZ2VQ	+5 / -	3	Partial capture
08-31 22:03	80m	- / -	LZ2VQ	+4 / -	3	Partial capture
08-31 21:57	80m	- / -	LZ2VQ	0 / -	3	Partial capture
08-31 21:49	40m	- / -	EA1CQ	-14 / -	2	Partial capture
08-31 21:46	40m	- / -	R3PJV	-5 / -	2	Partial capture
08-31 21:45	40m	-11 / -	JA5AUC	- / -16	3	✓ Closing fragment
08-31 21:33	40m	- / -	DK8HC	-2 / -	4	Partial capture
08-31 21:33	40m	-18 / -14	RN6HK	-5 / +1	9	✓ Full exchange observed
08-31 21:31	40m	-17 / -	TN8GD	- / -19	3	✓ Closing fragment
08-31 21:28	40m	-14 / -13	RW3YS	+4 / -	2	Partial capture
08-31 21:19	40m	-15 / -15	RW3DDZ	-10 / -	3	Partial capture
08-31 20:58	80m	- / -14	PA3DUU	+2 / -	2	✓ Closing fragment
08-31 20:44	80m	- / -11	G4DBW	-14 / -	4	✓ Closing fragment
08-30 20:41	80m	-23 / -	DO8PAT	- / -	2	Partial capture
08-30 20:38	80m	-22 / -	CS8ABF	- / -	4	Partial capture
08-30 20:35	80m	- / +9	CT7AUT	-17 / -	2	✓ Closing fragment
08-30 20:33	80m	- / -14	9A2LM	+6 / -	2	✓ Closing fragment
08-30 20:30	80m	-24 / -	M1DBW	-19 / -13	3	✓ Closing observed
08-30 20:28	80m	-23 / -13	ON3EBR	-3 / -16	4	✓ Full exchange observed
08-30 20:26	80m	-21 / +3	5P1KZX	+11 / -	3	✓ Closing observed
08-30 20:21	80m	-22 / -24	UA4FKT	+10 / -9	5	Partial capture
08-30 20:13	80m	- / -14	F4GTB	-2 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
203230  -2 2118  EA7CRB IQ4JO JN63
203300 -11 1934  EA7CRB OZ5AGJ JO47
203330 -11 1935  EA7CRB F5MXH R-10
203400  +4 1935  EA7CRB DO9SAM JO61 (x3)
203745 -24 1934  MM0ULL EA7CRB 73
203800  -4 1238  EA7CRB DK6WS -14 (x2)
204045 -24 1935  OE3EVB EA7CRB IM67
204045  -8 1568  EA7CRB DK6WS -14 (x3)
204415 -24 1934  S55X EA7CRB IM67
204745 -24 1934  EA4EWV EA7CRB -01

40m

UTC    dB Audio  Message
230145 -16 1739  TF1PA EA7CRB IM67 (x2)
200530  -1 1906  EA7CRB DK7ZT -01 (x3)
200730 -10  895  EA7CRB SV1MOZ -04 (x2)
200830  -5 2294  EA7CRB PE1NPS JO22 (x2)
201330  -6  598  EA7CRB DK8HC JO42 (x4)
202845 -17 2055  SM7MDI EA7CRB IM67 (x2)

20m

UTC    dB Audio  Message
205630  -1 1789  YU5DR EA7CRB R-02 (x6)
212145 -15 1789  Z62NS EA7CRB IM67
212245 -18 1799  7Z1BQ EA7CRB IM67 (x2)
213645 -11 1779  EA7CRB UA6YW LN04 (x5)
214315 -19 1268  EA7CRB KP4U -10

10m

UTC    dB Audio  Message
103500 -12  741  EA7CRB ON5HE 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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