EA7GRB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IM76

Receiver-side FT8 activity involving EA7GRB, decoded by SO8OO in southeastern Poland. 137 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-31.

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 137 FT8 messages attributed to EA7GRB as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (87%), followed by 40 m (10%) and 10 m (3%). Most decodes (81%) 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 -15 dB.

Overview

137

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

40m · 14 20m · 119 10m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-08-31 10:21 UTC

Observed FT8 message patterns

Attributed sample: 137 messages
Active dates: 29 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -23 to -10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 68, moderate (-15 to -9 dB) 63, strong (≥ -8 dB) 6.

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 EA7GRB in decoded directed-looking exchanges:

EG5ECL · Spain ×2 EG5MYC · Spain ×2 PD9FLX · Netherlands ×2 DK5UR · Fed. Rep. of Germany ×2 EA8UP · Canary Islands HB9OAB · Switzerland 2E0BRU · England AO5FSB · Spain EA2EED · Spain EA2WX · Spain EA7KLL · Spain EG1SRL · Spain

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 EA7GRB

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: IM76 · 94 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,613 km (approx.)
Last such locator decoded: 2026-08-31 10:21 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	EA7GRB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 19:44	40m	-15 / -5	S56MLZ	-2 / -19	4	✓ Full exchange observed
08-30 18:41	20m	-13 / -	EA2WX	- / -6	5	✓ Closing fragment
08-29 20:14	20m	-13 / -	<...>	- / -12	2	Partial capture
08-29 20:07	20m	-12 / +1	AO5FSB	+13 / -22	7	✓ Full exchange observed
08-29 19:41	20m	-18 / -	SP8S	- / -	3	✓ Closing fragment
08-28 21:06	40m	-8 / -	RA3ZT/QRP	- / -23	2	Partial capture
08-27 13:12	20m	-18 / -	PA3GHJ	-12 / -	2	✓ Closing observed
08-27 13:09	20m	-22 / -14	PD9FLX	-9 / -10	6	✓ Full exchange observed
08-26 21:31	20m	-17 / -	M0OVG	- / -6	2	✓ Closing fragment
08-26 14:03	20m	-21 / -	LB8X	- / -	3	Partial capture
08-26 13:45	20m	-12 / +10	F5IXN	-1 / -2	6	✓ Full exchange observed
08-25 13:06	20m	-14 / -8	EA7KLL	-13 / -	5	✓ Closing observed
08-22 13:14	20m	-24 / -4	SV9KNA	+7 / -	2	Partial capture
08-20 18:35	40m	-14 / -2	EG5DX	-11 / -3	2	Partial capture
08-19 21:31	20m	-23 / -	EG5DX	-11 / -17	3	✓ Closing observed
08-19 21:22	20m	- / -2	EG5DX	-14 / -	4	Partial capture
08-19 21:17	20m	-22 / -13	EG5DX	-13 / -	2	Partial capture
08-19 18:49	20m	-17 / -	LB8X	- / -10	6	Partial capture
08-19 13:39	10m	- / -18	HB9OAB	-14 / -	3	✓ Closing fragment
08-14 19:48	20m	-12 / -5	EG5MYC	-14 / +1	6	✓ Full exchange observed
08-14 19:41	20m	-12 / -	<...>	- / -	12	Partial capture
08-14 19:35	20m	-11 / -	<...>	- / -	3	Partial capture
08-14 18:10	20m	-16 / -3	<...>	-14 / -21	5	Partial capture
08-12 18:35	20m	- / +10	F1UGD	-14 / -	2	Partial capture
08-11 19:20	20m	-20 / -	TT1GD	- / -8	2	Partial capture
08-11 16:37	10m	- / -	EA8UP	-15 / -	2	✓ Closing fragment
08-10 09:51	20m	- / -	EG5ECL	-17 / -	2	✓ Closing fragment
08-09 16:22	20m	- / -	EG5MYC	-14 / -	2	✓ Closing fragment
08-08 17:46	10m	-13 / -	EG5ECL	- / -14	4	✓ Closing fragment
08-07 19:29	20m	-12 / -	<...>	- / -	2	Partial capture
08-06 18:07	20m	- / -17	GX4BRA	-16 / -	2	✓ Closing fragment
08-05 20:23	40m	- / -9	DK5UR	-8 / -	2	✓ Closing fragment
08-04 09:30	20m	- / +5	EG1UME	-12 / -	2	✓ Closing fragment
08-03 19:31	20m	-22 / -	<...>	- / -8	2	Partial capture
08-02 21:25	40m	- / -5	RN6HK	-12 / -	6	✓ Closing fragment
08-02 21:11	20m	- / -13	EA1DP	-22 / -	2	Partial capture
08-02 21:03	20m	-21 / -	VE2JD	- / -	2	Partial capture
07-27 18:04	20m	-22 / -	GX4BRA	- / -	2	Partial capture
07-26 18:35	40m	- / -10	RY7G	-7 / -	5	✓ Closing fragment
07-25 18:26	20m	-9 / +4	G5MJF	-18 / -10	4	✓ Full exchange observed
07-25 18:22	20m	-17 / +6	G8FVE	-11 / -7	9	✓ Full exchange observed
07-19 09:31	20m	- / -1	F4GYM/P	-8 / -	2	Partial capture
07-17 19:24	20m	-22 / -	DK5CR	- / -	2	Partial capture
07-13 16:49	40m	- / -9	S55A	-14 / -	2	Partial capture
07-12 09:49	20m	- / -	EA2EED	-12 / -	3	✓ Closing fragment
07-11 19:12	20m	-13 / -	EH1FSN	- / -	5	Partial capture
06-23 14:15	20m	-21 / +2	<...>	-18 / -1	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
173030 -13 2311  EA7GRB DK5UR RR73
201730 -18 1364  EA7GRB 9A170TESLA -07
202330  -6 2251  EA7GRB DK5UR -09 (x2)
202815  -2 2857  EA7GRB 9A3TGY +05
183530 -11 1141  EA7GRB EG5DX -02
183545 -14 1525  EG5DX EA7GRB R-03
210315 -17 2349  EA7GRB EA2DR -05
210600  -8 1521  RA3ZT/QRP EA7GRB IM76 (x2)
194445  -1  452  EA7GRB S56MLZ -05
194500 -14 1525  S56MLZ EA7GRB R-19
194515  -2  452  EA7GRB S56MLZ RR73
194530 -16 1525  S56MLZ EA7GRB 73
184730  +0  494  EA7GRB AM42SDC +02

20m

UTC    dB Audio  Message
200930  -8 1557  AO5FSB EA7GRB IM76
200945 +16 1884  EA7GRB AO5FSB +01 (x2)
201030  -8 1559  AO5FSB EA7GRB R-22
201045 +10 1884  EA7GRB AO5FSB RR73
201415 -15 1558  <...> EA7GRB IM76 (x2)
173215  -9 1555  CQ EA7GRB IM76
173400 +15 1554  EA7GRB UA4FEN -12
184145 -13 1555  EA2WX EA7GRB IM76 (x5)
102130 -11 1555  EG1PPE EA7GRB IM76

10m

UTC    dB Audio  Message
174615 -13 1541  EG5ECL EA7GRB IM76 (x4)
163700 -17 1212  EA7GRB EA8UP +18 (x2)
133945 -15 2328  EA7GRB HB9OAB JN46 (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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