GM4YXI — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Scotland Most frequent locator attributed to this token: IO87

Receiver-side FT8 activity involving GM4YXI, decoded by SO8OO in southeastern Poland. 619 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 33 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-06.

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 619 FT8 messages attributed to GM4YXI as the transmitting token by decoded message structure across 33 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (57%), followed by 80 m (28%) and 40 m (14%). Most decodes (70%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -4.2 dB.

Overview

619

Messages attributed

UTC dates decoded

Active 15-min windows

-4.2 dB

Estimated median S/N

Bands

160m · 354 80m · 176 40m · 89

First attributed message: 2026-06-07
Last attributed message: 2026-11-06 08:05 UTC

Observed FT8 message patterns

Attributed sample: 619 messages
Active dates: 33 UTC dates
Estimated median S/N: -4.2 dB
Estimated 10th-90th percentile: -18 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 104, moderate (-15 to -9 dB) 133, strong (≥ -8 dB) 382.

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 GM4YXI in decoded directed-looking exchanges:

JG3QZN · Japan ×2 5Z4VJ · Kenya ×2 V51WH · Namibia ×2 4X1UF · Israel 5A1AL · Libya 7M4BEN · Japan 7P8GE · Lesotho AA1K · United States AD7XG · United States AL7LO · Alaska C37AC · Andorra HS0ZNR · Thailand

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 GM4YXI

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: IO87 · 291 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,821 km (approx.)
Last such locator decoded: 2026-11-06 08:02 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	GM4YXI S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 08:04	80m	-10 / -	WQ9N	- / -2	2	✓ Closing fragment
11-06 08:02	80m	-10 / -	K0TPP	- / +7	4	✓ Closing fragment
11-06 07:58	80m	-6 / -	K5XI	- / -	3	✓ Closing fragment
11-06 07:37	80m	-4 / -	CA6SNT	- / -13	2	✓ Closing fragment
11-04 22:11	160m	+10 / -	5A1AL	- / -12	4	✓ Closing fragment
11-04 22:10	160m	- / -	DK7ZT	+1 / -	10	Partial capture
11-04 22:10	160m	- / -	HB9CXZ	0 / -	8	Partial capture
11-04 22:10	160m	- / +1	S58T	+8 / -	3	Partial capture
11-04 22:07	160m	+10 / -	WP4G	- / -13	5	✓ Closing fragment
11-04 22:02	80m	- / -	DO9BAU	+5 / -	12	Partial capture
11-04 21:57	80m	- / -	HA5UK	+15 / -	3	Partial capture
11-04 21:57	80m	- / -	RA3WY	+1 / -	5	Partial capture
11-04 21:56	80m	+5 / -	AP2AM	-13 / -	2	✓ Closing observed
11-04 07:01	160m	-12 / -	W9COS	- / -15	3	✓ Closing fragment
11-04 06:59	160m	-11 / -	AA1K	- / +10	3	✓ Closing fragment
11-04 06:56	160m	-11 / -	W5XZ	- / -	3	Partial capture
11-04 06:51	160m	-10 / -	W5XZ	- / -	4	Partial capture
11-04 06:48	80m	- / -	DK5OPA	-10 / -	2	Partial capture
11-04 06:45	80m	+4 / -	XE1UYS	- / -5	7	✓ Closing fragment
11-04 06:43	80m	- / -	DK7ZT	+5 / -	4	Partial capture
11-04 06:43	80m	- / -5	IK4TVP	-10 / -	6	Partial capture
11-04 06:42	80m	-2 / -	LU8ENU	- / -11	3	✓ Closing fragment
11-03 22:30	80m	+7 / -	9X5KM	- / -	3	Partial capture
11-03 22:21	160m	-4 / -	KB1HY	- / -9	2	✓ Closing fragment
11-03 22:18	160m	+3 / -	BG9MM	- / -	3	Partial capture
11-03 22:18	160m	- / -	DK7ZT	-10 / -	10	Partial capture
11-03 22:16	160m	+6 / -	6W/IK2HKT	- / -25	2	Partial capture
11-02 22:43	80m	+16 / -	UA9XL/P	- / -	3	Partial capture
11-02 22:40	160m	- / -15	UA4CKN	-11 / -	3	Partial capture
11-02 22:38	160m	- / -	UA4FKT	+7 / -	3	Partial capture
11-01 17:28	80m	-6 / -	OD5ZZ	- / -	6	Partial capture
11-01 17:22	80m	-7 / -	EX7DY	- / -19	6	✓ Closing fragment
10-31 22:24	80m	- / -	9A4ZM	+12 / -	2	Partial capture
10-31 22:24	80m	- / -3	S58N	+16 / -	2	Partial capture
10-31 22:15	80m	-1 / -20	A92AE	-12 / -5	15	Partial capture
10-21 20:08	160m	- / -	SP5DAA	-20 / -	20	Partial capture
10-21 20:07	160m	- / -16	UA4SJB	-9 / -	2	Partial capture
10-21 20:00	160m	+7 / -	7P8GE	- / -17	15	✓ Closing fragment
10-21 19:35	160m	+2 / -	7P8GE	- / -16	12	Partial capture
10-21 19:19	160m	- / -	R2EA/P	-18 / -	2	Partial capture
10-21 19:18	160m	-1 / -	VK3NX	- / -6	3	✓ Closing fragment
10-21 19:10	80m	+1 / -15	EX8BT	-7 / -9	4	Partial capture
10-19 07:32	80m	- / +3	DK7ZT	-8 / -	4	Partial capture
10-18 20:09	160m	- / -	DK7ZT	-9 / -	5	Partial capture
10-18 20:08	160m	+2 / -	OH0Z	-13 / -	5	✓ Closing observed
10-12 07:45	40m	- / -	IZ8DBJ	-24 / -	2	Partial capture
10-12 07:40	40m	- / -	IZ8DBJ	-20 / -	2	Partial capture
10-12 07:36	40m	- / -	IZ8DBJ	-24 / -	2	Partial capture
10-12 07:10	80m	- / -	SP9MOC	+7 / -	11	Partial capture
10-12 07:10	80m	-13 / -	G3TKT	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
220700  +7 2502  GM4YXI DO9BAU JO62 (x3)
073745 -13  578  CA6SNT GM4YXI R-13 (x2)
075815 -10 1992  K5XI GM4YXI IO87 (x3)
080215  -4 1992  K0TPP GM4YXI IO87 (x4)
080415 -15 1992  WQ9N GM4YXI -02 (x2)
080545  -9 1992  N0ANE GM4YXI RR73

160m

UTC    dB Audio  Message
221130  +1 1961  GM4YXI DK7ZT JO40
221145 +10 2401  5A1AL GM4YXI IO87
221200  +2 2272  GM4YXI HB9CXZ JN46
221200  +5 1961  GM4YXI DK7ZT JO40
221215  +8 2401  5A1AL GM4YXI R-12
221230  +1 2272  GM4YXI HB9CXZ JN46
221245 +13 2401  5A1AL GM4YXI 73
221300 -13 2511  GM4YXI OH6NIO KP12
221300  -5 2271  GM4YXI HB9CXZ JN46
221300  +6 1961  GM4YXI DK7ZT JO40
221330  -1 2271  GM4YXI HB9CXZ JN46
221330  +2 1961  GM4YXI DK7ZT JO40 (x4)

40m

UTC    dB Audio  Message
070300 -22 1933  GM4YXI IZ8DBJ JN70 (x15)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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