GD3SKZ — 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: Isle of Man Most frequent locator attributed to this token: IO74

Receiver-side FT8 activity involving GD3SKZ, decoded by SO8OO in southeastern Poland. 242 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-11-04.

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 242 FT8 messages attributed to GD3SKZ as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 80 m (28%) and 20 m (27%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6 dB.

Overview

242

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 68 40m · 106 20m · 65 10m · 3

First attributed message: 2026-07-17
Last attributed message: 2026-11-04 21:38 UTC

Observed FT8 message patterns

Attributed sample: 242 messages
Active dates: 21 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -16 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 65, strong (≥ -8 dB) 151.

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 GD3SKZ in decoded directed-looking exchanges:

RN2F · Kaliningrad ×2 5B4AMM · Cyprus A61DD · United Arab Emirates EA8Y · Canary Islands F6FDY · France HI9R · Dominican Republic PS7RW · Brazil UA6YW · European Russia VP2MAA · Montserrat 9A2AA · Croatia 9A3K · Croatia DL6HH · Fed. Rep. of Germany

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 GD3SKZ

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 · 106 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,881 km (approx.)
Last such locator decoded: 2026-11-04 21:32 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	GD3SKZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 21:38	80m	-4 / -	HF9T	- / -11	2	Partial capture
11-04 21:33	80m	- / -19	9A3K	+18 / -	3	✓ Closing fragment
11-04 21:33	80m	- / -	OM2WQ	+8 / -	3	Partial capture
11-04 21:33	80m	0 / +3	DL6HH	+3 / -	4	✓ Full exchange observed
11-04 21:29	80m	- / -	OM2WQ	+8 / -	3	Partial capture
11-04 21:29	80m	- / -26	EA2DYB	-1 / -	3	✓ Closing fragment
11-04 21:28	80m	- / -	9A3K	+17 / -	3	Partial capture
11-04 21:28	80m	- / -	SP2DW	-2 / -	2	Partial capture
11-04 21:28	80m	-1 / -	HB9HRR	- / -11	2	Partial capture
11-04 21:22	40m	- / -1	KE4EB	-15 / -	3	Partial capture
11-04 21:19	40m	- / -13	EA6TU	-23 / -	2	Partial capture
11-04 20:56	40m	- / -	IV3DSG	-11 / -	2	Partial capture
11-02 22:06	80m	- / -	9A60CBM	+10 / -	5	Partial capture
11-02 22:06	80m	- / -	DO9SAM	+12 / -	3	Partial capture
11-02 22:06	80m	- / -1	SQ5N	-4 / -	3	✓ Closing fragment
11-02 22:05	80m	- / -	G4DBW	+1 / -	2	Partial capture
11-02 22:05	80m	- / -	PA3KUS	-2 / -	6	Partial capture
11-02 22:00	80m	- / -	DO9SAM	+10 / -	2	Partial capture
11-02 22:00	80m	- / -	F4IFO	-5 / -	6	Partial capture
11-02 22:00	80m	- / -	IW3IFJ	+7 / -	4	Partial capture
11-02 21:54	40m	- / -	EA4CFT	-12 / -	3	Partial capture
11-02 21:52	40m	-1 / -	HI9R	- / -7	3	✓ Closing fragment
11-02 21:50	40m	- / -	EA4CFT	-14 / -	3	Partial capture
11-02 21:49	40m	-6 / -15	UA6YW	-7 / -1	6	✓ Full exchange observed
11-02 21:49	40m	- / -	US5MUW	-12 / -	4	Partial capture
11-02 21:48	40m	+1 / -21	F6FDY	-3 / -	4	✓ Closing observed
11-02 21:46	40m	-2 / -	PY2JX	- / -	2	Partial capture
11-02 21:44	40m	-8 / -	HA7TM	- / +9	2	Partial capture
11-02 21:40	40m	-6 / -	XV9B	- / -	6	Partial capture
11-02 21:34	80m	- / -	SN9Q	+6 / -	2	Partial capture
11-02 21:33	80m	+4 / -	OH1ZE	- / -4	2	Partial capture
11-02 21:32	80m	- / -	DH4PAP	-3 / -	3	Partial capture
11-02 21:31	80m	- / -	DO1WOA	-8 / -	6	Partial capture
11-02 21:31	80m	- / -	DP75BAC	-7 / -	2	Partial capture
11-02 21:31	80m	- / -	RO2X	+2 / -	4	Partial capture
11-02 21:31	80m	+8 / -7	YO4NF	+17 / +2	5	✓ Full exchange observed
11-02 21:26	80m	- / -	OK2CNI	+3 / -	5	Partial capture
11-02 21:25	80m	- / -	F1PWF	-6 / -	2	Partial capture
11-02 21:25	80m	- / -5	YO4NF	+10 / -	2	Partial capture
11-02 21:25	80m	- / -	RO2X	+1 / -	6	Partial capture
11-02 21:24	80m	+6 / -	KP4AA	- / -5	4	✓ Closing fragment
11-02 21:23	80m	+6 / -3	IT9JOB	-4 / -1	7	✓ Full exchange observed
11-02 21:23	80m	- / -	PA3KUS	-8 / -	4	Partial capture
11-02 21:22	80m	- / -	LA7KJ	-10 / -	5	Partial capture
11-02 21:22	80m	+5 / -	SV3AUW	-15 / -2	5	✓ Closing observed
10-29 22:48	40m	-16 / -	XV9B	- / -	4	Partial capture
10-29 22:44	40m	-12 / -	XV9B	- / -	3	Partial capture
10-29 22:37	40m	-13 / -	VJ6X	- / -14	2	Partial capture
10-29 22:14	40m	-6 / -	AB3HP	- / -	2	Partial capture
10-29 22:12	40m	- / -	4Z4DX	-11 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
213230  -3 2602  CQ GD3SKZ IO74
213300  +1 2602  DL6HH GD3SKZ +13
213315  +5 2242  GD3SKZ OM2WQ JN88
213315  +4 2602  GD3SKZ DL6HH R+03
213330  +0 2602  DL6HH GD3SKZ RRR
213345 -11  594  GD3SKZ PA3KUS JO21
213345  +2 2602  GD3SKZ DL6HH 73
213345  -1 1308  GD3SKZ DD7EE JO41
213345 +14 2663  GD3SKZ 9A3K JN65
213415 +11 2242  GD3SKZ OM2WQ JN88
213415 +20 2663  GD3SKZ 9A3K R-19
213445  +8 2243  GD3SKZ OM2WQ JN88
213445 +21 2663  GD3SKZ 9A3K 73
213800  -7 2602  HF9T GD3SKZ -11 (x2)

40m

UTC    dB Audio  Message
215100 -11 2607  GD3SKZ EA4CFT IN80 (x2)
215245  +0  993  HI9R GD3SKZ R-07 (x3)
215400 -10 2607  GD3SKZ EA4CFT IN80 (x3)
205600 -12  379  GD3SKZ IV3DSG JN66 (x2)
211945 -24 1688  GD3SKZ EA6TU JM19 (x2)
212215 -17 1302  GD3SKZ KE4EB -01 (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.

CW

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

Explore CW reception at SO8OO

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