GD0NFN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Isle of Man Most frequent locator attributed to this token: IO74

Receiver-side FT8 activity involving GD0NFN, decoded by SO8OO in southeastern Poland. 46 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-26.

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 46 FT8 messages attributed to GD0NFN as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 40 m (2%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

40m · 1 20m · 45

First attributed message: 2026-06-11
Last attributed message: 2026-08-26 15:34 UTC

Observed FT8 message patterns

Attributed sample: 46 messages
Active dates: 2 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -21 to -6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 9.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with GD0NFN in decoded directed-looking exchanges:

9A3EYA · Croatia CT2HEX · Portugal DA1TE · Fed. Rep. of Germany DB1SN · Fed. Rep. of Germany DB2VS · Fed. Rep. of Germany DL2HIR · Fed. Rep. of Germany DL5MKR · Fed. Rep. of Germany EA3AGF · Spain F5IXN · France F5RRS · France I8FOQ · Italy RG5A · European Russia

Most frequent locator attributed to GD0NFN

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: IO74 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,881 km (approx.)
Last such locator decoded: 2026-08-26 15:34 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	GD0NFN S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-26 15:51	40m	- / -	PA2WDR	-16 / -	9	Partial capture
08-26 15:30	20m	-16 / -	DL3RAJ	- / -14	4	Partial capture
08-26 15:28	20m	-8 / -13	I8FOQ	+11 / -11	7	✓ Full exchange observed
08-26 15:24	20m	-6 / -	DL5KBT	- / -6	2	Partial capture
08-26 15:21	20m	-13 / -	DL5MKR	- / +2	2	✓ Closing fragment
08-26 15:19	20m	-12 / -	F1ROA	- / -20	2	Partial capture
08-26 15:11	20m	-6 / -15	UN7PNF	-4 / -16	3	Partial capture
08-26 15:09	20m	-11 / -	DA1TE	- / -2	2	✓ Closing fragment
08-26 15:08	20m	- / -	F1ROA	-13 / -	3	Partial capture
08-26 15:08	20m	-11 / -16	EA3AGF	-6 / -	5	✓ Closing observed
08-26 15:04	20m	- / -4	F5RRS	+16 / -	5	✓ Closing fragment
08-26 14:55	20m	- / -8	RG5A	-1 / -	4	✓ Closing fragment
08-26 14:54	20m	- / -	RA3AHN	-16 / -	2	Partial capture
08-26 14:52	20m	- / -6	F5IXN	0 / -	4	✓ Closing fragment
08-26 14:49	20m	-17 / -	SQ8MA	- / -7	2	Partial capture
08-26 14:32	20m	-12 / -	CT2HEX	- / -14	3	✓ Closing fragment
08-26 12:25	20m	- / -	IU2WKL	-7 / -	2	Partial capture
08-26 12:19	20m	- / -	IU2WKL	-6 / -	6	Partial capture
08-26 12:14	20m	- / -	DL2YCD	-14 / -	2	Partial capture
08-26 12:11	20m	-20 / -	9A3EYA	- / -3	2	✓ Closing fragment
08-26 12:10	20m	-16 / -	HB9COF	- / 0	2	Partial capture
08-26 12:07	20m	-18 / -13	DL2HIR	-24 / +2	4	✓ Full exchange observed
08-26 12:05	20m	- / -	R3TE	+2 / -	5	Partial capture
08-26 12:01	20m	- / -	DL2HIR	-4 / -	7	Partial capture
08-26 12:01	20m	- / -	HB9COF	+9 / -	3	Partial capture
08-26 12:00	20m	-18 / -17	DB2VS	-11 / -12	12	✓ Closing observed
08-26 11:23	40m	- / -22	DL4IAZ	-16 / -	3	Partial capture
08-10 11:32	20m	- / -	DL6MRM	-4 / -	2	Partial capture
08-10 11:29	20m	- / -12	DB1SN	-6 / -	2	✓ Closing fragment
08-10 10:42	40m	- / -	OK7PM	-12 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
112345 -15 1254  GD0NFN DL4IAZ JN48 (x3)
154400 -20 1635  GD0NFN PA2WDR JO21 (x2)
155030 -17 1740  GD0NFN DF8MH JO33
155100 -18 1635  GD0NFN PA2WDR JO21 (x9)

20m

UTC    dB Audio  Message
152615  -5 1661  DL5KBT GD0NFN -08
152745  -9 1661  CQ GD0NFN IO74 (x2)
152830 +11 1232  GD0NFN I8FOQ JN70 (x3)
152945  -5 1661  I8FOQ GD0NFN -11
153000  +7 1232  GD0NFN I8FOQ R-13
153015 -11 1661  I8FOQ GD0NFN RR73
153030 +11 1232  GD0NFN I8FOQ 73
153045 -15 1662  DL3RAJ GD0NFN -14 (x4)
153415 -18 1661  CQ GD0NFN IO74

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