SP4FDH — 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: Poland Most frequent locator attributed to this token: KO03

Receiver-side FT8 activity involving SP4FDH, decoded by SO8OO in southeastern Poland. 148 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-10-04 and 2026-11-05.

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 148 FT8 messages attributed to SP4FDH as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 80 m (35%) and 60 m (5%). Most decodes (57%) fell within the six-hour window 09:00-15:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -6 dB.

Overview

148

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 52 60m · 8 40m · 88

First attributed message: 2026-10-04
Last attributed message: 2026-11-05 09:28 UTC

Observed FT8 message patterns

Attributed sample: 148 messages
Active dates: 4 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -12 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 109.

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 SP4FDH in decoded directed-looking exchanges:

CN8DN · Morocco ×3 DJ2MS · Fed. Rep. of Germany ×2 OM3ZAS · Slovak Republic ×2 DH5BM · Fed. Rep. of Germany DL1HBG · Fed. Rep. of Germany DL6UCK · Fed. Rep. of Germany DM8MH · Fed. Rep. of Germany F5PBG · France HA7TM · Hungary HB9EFK · Switzerland HG5OGI · Hungary LB5UK · Norway

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 SP4FDH

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: KO03 · 76 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 400 km (approx.)
Last such locator decoded: 2026-11-05 09:22 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	SP4FDH S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 09:26	40m	-9 / -18	YO3GNF	-14 / -17	9	Partial capture
11-05 09:24	40m	-3 / -7	HA7TM	+1 / -	4	✓ Closing observed
11-05 09:22	40m	- / +7	SP3FXC	+7 / -	3	✓ Closing fragment
11-05 09:21	40m	- / -	PG0T	-6 / -	9	Partial capture
11-05 09:19	40m	-5 / -17	DH5BM	-8 / -7	4	✓ Full exchange observed
11-05 09:16	40m	-9 / -	UT0IN	-11 / -7	2	✓ Closing observed
11-05 09:14	40m	-7 / +8	SP5EXA	+7 / -4	5	✓ Full exchange observed
11-05 09:13	40m	-4 / -	SP6AXW	- / -11	2	✓ Closing fragment
11-05 09:12	40m	- / -	UR9QQ	-24 / -	10	Partial capture
11-05 09:12	40m	- / -	OE3RWR	-7 / -	2	Partial capture
11-05 09:11	40m	-3 / -5	OK1HEH	-11 / -6	5	✓ Full exchange observed
11-05 09:10	40m	-5 / -	DL1HBG	-5 / -	4	✓ Closing observed
11-05 09:10	40m	-4 / -6	DL6UCK	-15 / -9	5	✓ Full exchange observed
10-08 06:25	80m	-3 / -	SP7TJ	- / -	5	Partial capture
10-08 04:58	80m	+2 / -14	SP6FME	+16 / -4	5	✓ Full exchange observed
10-08 04:57	80m	+4 / -8	OM3ZAS	-7 / -8	6	✓ Full exchange observed
10-08 04:56	80m	0 / -2	F1PSX	-14 / -13	5	✓ Full exchange observed
10-08 04:54	80m	-4 / -3	DL1VVQ	+6 / -	3	✓ Closing observed
10-08 04:54	80m	- / -8	OM3ZAS	+2 / -	2	Partial capture
10-08 04:53	80m	-5 / -13	F4FSY	0 / -11	5	✓ Full exchange observed
10-07 21:29	80m	-9 / -	UA9XL/M	- / -	5	Partial capture
10-07 21:25	80m	-13 / -	UN0GY	-20 / -10	4	✓ Closing observed
10-07 21:20	80m	-12 / -	SP4BB	-17 / -8	4	✓ Closing observed
10-07 21:19	80m	-9 / -	DA6OOM	- / -8	3	Partial capture
10-07 21:18	80m	-2 / -1	SP2ADI	-2 / -6	4	✓ Full exchange observed
10-07 21:14	80m	-5 / -	E79KO	- / -	7	Partial capture
10-07 21:13	80m	-8 / -16	DK8HC	+8 / -24	5	✓ Full exchange observed
10-07 21:11	80m	-7 / 0	DK6WS	+1 / -8	7	✓ Full exchange observed
10-07 21:08	80m	-10 / -	SP2ADI	- / -	4	Partial capture
10-07 20:02	60m	-8 / -8	DL9KM	-22 / -16	7	✓ Full exchange observed
10-07 20:01	60m	-12 / -	G4XWR	-21 / -13	4	✓ Closing observed
10-07 19:59	60m	-11 / -9	DK4RH	-6 / -	3	✓ Closing observed
10-07 19:58	60m	- / -4	G1XOW	-9 / -	2	✓ Closing fragment
10-07 19:55	60m	- / -1	IK4POB	+2 / -	4	✓ Closing fragment
10-07 19:52	60m	- / -12	EA1MX	-8 / -	4	Partial capture
10-07 19:44	60m	- / -5	PI4DX	+4 / -	2	✓ Closing fragment
10-07 19:41	60m	- / -8	DK5IR	-8 / -	2	✓ Closing fragment
10-07 19:30	60m	- / -13	CN8DN	-17 / -	23	✓ Closing fragment
10-07 19:29	60m	- / -11	PA3FR	0 / -	2	✓ Closing fragment
10-07 19:25	60m	- / -20	PH2M	-4 / -	2	✓ Closing fragment
10-07 19:23	60m	- / -12	IK4POB	-1 / -	3	Partial capture
10-07 19:18	60m	- / +2	DK1XAM	-3 / -	2	✓ Closing fragment
10-07 19:05	60m	- / -16	OM1AGE	-2 / -	2	Partial capture
10-07 19:04	60m	- / -10	9A4ZM	+3 / -	3	✓ Closing fragment
10-07 19:03	60m	- / -8	EA1IOK	-3 / -	3	✓ Closing fragment
10-07 19:01	60m	- / -5	HA8BE	-8 / -	3	✓ Closing fragment
10-07 18:59	60m	- / -4	OK1TRJ	+6 / -	2	✓ Closing fragment
10-07 18:54	40m	- / -9	HB9EFK	+8 / -	2	✓ Closing fragment
10-07 18:35	40m	- / -	DL9KM	-13 / -	4	Partial capture
10-07 18:35	40m	- / -14	R2EA	-2 / -	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
092515  -6  459  SP4FDH PG0T JO21
092515  +0 1278  SP4FDH HA7TM 73
092545  +2  459  SP4FDH PG0T JO21
092600  -7 1277  UT3RO SP4FDH -08
092615 -12 1399  SP4FDH YO3GNF KN34
092615  +0  459  SP4FDH PG0T JO21
092645 -16 1399  SP4FDH YO3GNF KN34
092645  -8  459  SP4FDH PG0T JO21
092700  -9 1278  YO3GNF SP4FDH -17
092715 -12 1399  SP4FDH YO3GNF KN34 (x2)
092800  -9 1278  YO3GNF SP4FDH -17
092815  -9 1399  SP4FDH YO3GNF R-15 (x3)

80m

UTC    dB Audio  Message
045845  -9 1084  SP4FDH OM3ZAS -08
045900  +0 1244  SP6FME SP4FDH RR73
045915 +15 1244  SP4FDH SP6FME 73
045930  +1 1243  OM3ZAS SP4FDH R-08
045945  -7 1083  SP4FDH OM3ZAS RR73
050000  +6 1243  OM3ZAS SP4FDH 73
050030  +7 1243  CQ SP4FDH KO03
050045  +5 1240  SP4FDH 9A4ZM JN86
050115  +1 1243  SP4FDH OK7BB JN79
050230  -1 1835  SP4FDH G0BLB IO81
062530 -12 1244  SP7TJ SP4FDH KO03 (x5)

60m

UTC    dB Audio  Message
195845 -10  659  SP4FDH G1XOW RR73
195945  -5  887  SP4FDH DK4RH -09 (x2)
200030 -11 1271  DK4RH SP4FDH 73
200100 -11 1271  G4XWR SP4FDH KO03 (x2)
200145 -21 2193  SP4FDH G4XWR RRR
200200 -12 1271  G4XWR SP4FDH 73
200230 -11 1271  DL9KM SP4FDH -16
200245 -21 1388  SP4FDH DL9KM R-08
200300  -6 1271  DL9KM SP4FDH -16
200315 -21 1388  SP4FDH DL9KM R-08 (x2)
200400  -7 1271  DL9KM SP4FDH -16 (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.

CW

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

Explore CW reception at SO8OO

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