EA4GRZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IN80

Receiver-side FT8 activity involving EA4GRZ, decoded by SO8OO in southeastern Poland. 269 FT8 messages attributed to this token as transmitter, on 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-08 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 269 FT8 messages attributed to EA4GRZ as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (70%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -6 dB.

Overview

269

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

20m · 269

First attributed message: 2026-06-08
Last attributed message: 2026-08-31 17:12 UTC

Observed FT8 message patterns

Attributed sample: 269 messages
Active dates: 11 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -14 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 71, strong (≥ -8 dB) 181.

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 EA4GRZ in decoded directed-looking exchanges:

EC5M · Spain ×2 TM8WWA · France ×2 HZ1TT · Saudi Arabia RV3DNK · European Russia HG0NPJ · Hungary HZ1OL · Saudi Arabia K2J · United States KB3DQI · United States KP4WWA · Puerto Rico LW2EIY · Argentina LY5A · Lithuania N6AX · United States

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 EA4GRZ

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: IN80 · 156 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,193 km (approx.)
Last such locator decoded: 2026-08-31 17:12 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	EA4GRZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-21 06:28	20m	-3 / -2	SP2GK	0 / -4	5	✓ Full exchange observed
08-21 06:26	20m	-3 / -7	YO6LM	-2 / -10	3	✓ Full exchange observed
08-21 06:24	20m	-7 / -	KB3DQI	- / -14	2	Partial capture
08-21 06:22	20m	-11 / -	ES0IA	- / -	3	Partial capture
08-21 06:18	20m	-8 / -15	OH3OJ	-15 / -18	4	✓ Full exchange observed
08-21 06:17	20m	-1 / -	HG0NPJ	- / -11	3	✓ Closing fragment
08-21 06:05	20m	-6 / -	LB4PI	- / -16	4	Partial capture
08-21 06:02	20m	-10 / -	VK2PWS	- / -14	4	✓ Closing fragment
08-21 06:00	20m	-6 / -	ZL1BQD	- / -	3	Partial capture
08-21 05:59	20m	+1 / +2	LY5A	-10 / -	3	✓ Closing observed
07-04 00:49	20m	-16 / -	W4UTZ	- / -18	3	✓ Closing fragment
07-04 00:48	20m	-12 / -	HA0AA	- / -	2	Partial capture
07-04 00:46	20m	-22 / -	RW9QA	- / -	3	✓ Closing fragment
07-04 00:43	20m	-14 / -	<...>	- / -3	2	Partial capture
07-04 00:42	20m	-15 / -	VE2MNZ	- / -	2	Partial capture
07-04 00:37	20m	-12 / -	HC5CG	- / -5	2	Partial capture
07-04 00:35	20m	-8 / -	KP4WWA	- / -6	2	✓ Closing fragment
07-04 00:33	20m	-6 / -	W4DXR	- / -	2	Partial capture
07-04 00:30	20m	-2 / -	RX7T	- / -15	2	✓ Closing fragment
07-04 00:26	20m	-1 / -	TM8WWA	- / -9	6	✓ Closing fragment
07-04 00:22	20m	-11 / -	HI7WWA	- / -5	5	Partial capture
07-04 00:21	20m	-2 / -	K2J	- / -8	2	✓ Closing fragment
07-03 00:10	20m	-21 / +6	R0ADA	-12 / -	3	✓ Closing observed
07-03 00:07	20m	-18 / -	KB3DQI	- / -11	3	✓ Closing fragment
07-03 00:03	20m	-9 / -	R6OP	- / -8	6	✓ Closing fragment
07-03 00:01	20m	-12 / -2	VE9CF	-6 / +8	5	✓ Full exchange observed
06-30 17:23	10m	- / -19	HZ1TT	-8 / -	3	✓ Closing fragment
06-30 01:33	40m	- / +2	II3WWA	-10 / -	2	✓ Closing fragment
06-28 01:44	40m	- / -10	GB8MMH	-18 / -	2	✓ Closing fragment
06-28 01:42	40m	- / -10	RA6FRI	-21 / -	2	✓ Closing fragment
06-28 01:38	40m	- / -3	LZ1ZF	-20 / -	2	✓ Closing fragment
06-28 01:35	40m	- / +7	E75AA	-8 / -	2	✓ Closing fragment
06-28 01:32	40m	- / -4	HB9EFK	+10 / -	2	✓ Closing fragment
06-27 20:00	10m	- / -9	RV3DNK	-10 / -	3	✓ Closing fragment
06-27 19:55	10m	- / -	DL3MIB	-8 / -	7	Partial capture
06-22 02:34	20m	-8 / -	D44EC	- / -	6	Partial capture
06-22 02:27	20m	-9 / -	D44EC	- / -	2	Partial capture
06-22 02:17	20m	-5 / -	D44EC	- / -	8	Partial capture
06-21 01:49	20m	-5 / -	UF4S	- / -	2	Partial capture
06-21 01:45	20m	-4 / -14	W4EMI	-10 / -6	8	✓ Full exchange observed
06-21 01:43	20m	+6 / -	R3LDK	- / -	2	Partial capture
06-21 01:42	20m	+2 / -	BD8ABR	- / -	2	Partial capture
06-21 01:39	20m	+4 / -	SP3FNW	- / -	2	Partial capture
06-21 01:37	20m	+6 / -	KQ4COB	- / -	4	Partial capture
06-21 01:36	20m	+5 / -	9Z4SS	- / -	2	Partial capture
06-21 01:31	20m	+5 / -	UN7LEW	- / -13	5	✓ Closing fragment
06-21 01:28	20m	+3 / -	HI8MAM	- / -	3	Partial capture
06-21 01:24	20m	+5 / -	N6AX	- / -8	7	✓ Closing fragment
06-21 01:18	20m	-7 / -	UN7LEW	- / -	3	Partial capture
06-21 01:16	20m	-12 / -9	EC5M	-14 / -4	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
062245 -11 1514  ES0IA EA4GRZ IN80 (x2)
062415 -10 1514  KB3DQI EA4GRZ -14 (x2)
062615  -3  507  EA4GRZ SV2HTW RR73
062645  -2  945  EA4GRZ YO6LM -07
062700  -1  507  YO6LM EA4GRZ R-10 (x2)
062830  +2 2541  SP2GK EA4GRZ IN80
062845  -2 2540  EA4GRZ SP2GK -02
062900  -9 2541  SP2GK EA4GRZ R-04
062915  +3 2540  EA4GRZ SP2GK RR73
062930  -3 2541  SP2GK EA4GRZ 73
155615  +1 1572  EA4GRZ IU8JLX -10
171200 -14 2021  PD5DSL EA4GRZ IN80

10m

UTC    dB Audio  Message
130215 -12  254  EA4GRZ IN3BFW +07
195545  -3 1610  EA4GRZ DL3MIB JN57 (x7)
200015 -11 2338  EA4GRZ RV3DNK -09 (x3)
172330  -7 1764  EA4GRZ HZ1TT -19 (x3)

40m

UTC    dB Audio  Message
013100 -21 1933  EA4GRZ SP1EG -06
013245  +9 2840  EA4GRZ HB9EFK -04 (x2)
013530  -7 2658  EA4GRZ E75AA +07 (x2)
013845 -20 1734  EA4GRZ LZ1ZF -03 (x2)
014215 -21 1674  EA4GRZ RA6FRI -10 (x2)
014400 -17 1560  EA4GRZ GB8MMH -10 (x2)
004545 -10  526  EA4GRZ TM8WWA RR73
012530 -12  752  EA4GRZ EC5M RR73
013330 -10  830  EA4GRZ II3WWA +02 (x2)

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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