SP7FJX — 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: JO91

Receiver-side FT8 activity involving SP7FJX, decoded by SO8OO in southeastern Poland. 57 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-01.

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 57 FT8 messages attributed to SP7FJX as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 20 m (5%) and 80 m (2%). Several six-hour UTC windows tied for the largest share (68%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 1 40m · 53 20m · 3

First attributed message: 2026-06-07
Last attributed message: 2026-11-01 10:52 UTC

Observed FT8 message patterns

Attributed sample: 57 messages
Active dates: 10 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -17 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 26.

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 SP7FJX in decoded directed-looking exchanges:

SP8RPA · Poland ×2 GJ0KYZ · Jersey IZ4JMA · Italy 4L7T · Georgia EB3JT · Spain SV9ANC · Crete TA1CQ · European Turkey EU2ABK · Belarus HA1BF · Hungary IZ5YBN · Italy PA2RO · Netherlands PD4FL · Netherlands

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 SP7FJX

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: JO91 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 262 km (approx.)
Last such locator decoded: 2026-11-01 10:48 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	SP7FJX S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 10:52	40m	-12 / -	EA6VD	- / -20	2	Partial capture
11-01 10:50	40m	-11 / 0	HA1BF	0 / -2	4	✓ Full exchange observed
11-01 10:49	40m	-10 / -	IZ5YBN	- / -12	2	✓ Closing fragment
10-11 12:23	40m	-15 / -1	SP5XZM	-6 / -	3	✓ Closing observed
10-04 17:00	80m	0 / -4	SP8RPA	+9 / +1	3	✓ Full exchange observed
10-04 13:45	40m	-8 / -	PD4FL	- / -7	2	✓ Closing fragment
10-04 13:43	40m	-7 / +4	SP8RPA	-2 / +5	4	✓ Full exchange observed
10-04 13:38	40m	-12 / -	SP8RPA	- / -2	2	Partial capture
10-04 13:34	40m	-6 / -	EX7CQ	- / -13	2	Partial capture
09-19 13:26	40m	-2 / -	SQ2RBY/P	- / -2	4	Partial capture
09-19 13:24	40m	-2 / -11	EU2ABK	+1 / -	3	✓ Closing observed
08-22 06:29	40m	+6 / -	<...>	- / -18	2	Partial capture
08-22 06:24	40m	-4 / -	EA6EE	- / -7	3	Partial capture
08-22 06:19	40m	-16 / -12	PA2RO	-9 / -5	5	✓ Full exchange observed
08-22 06:14	40m	-12 / -	PV8AJ	- / -16	2	Partial capture
08-15 14:17	20m	- / -	2W0YOX	-14 / -	4	Partial capture
08-15 14:14	20m	- / -18	EB3JT	-11 / -	3	✓ Closing fragment
08-07 19:31	20m	- / -	4L7T	-3 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
134645  -8 1245  CQ SP7FJX JO91
122315  -5 1544  SP7FJX SP5XZM R-01
122330 -15 1391  SP5XZM SP7FJX RR73
122345  -8 1544  SP7FJX SP5XZM 73
104545 -10 1275  OH1TEV SP7FJX -07
104730 -16 1275  MW7GQB SP7FJX -16
104830 -16 1275  CQ SP7FJX JO91
104900  -7 1275  IZ5YBN SP7FJX -12 (x2)
105045  -8 1274  HA1BF SP7FJX -02
105100  -1 1390  SP7FJX HA1BF R+00
105115 -14 1275  HA1BF SP7FJX RR73
105130  +0 1390  SP7FJX HA1BF 73
105215 -12 1274  EA6VD SP7FJX -20 (x2)

10m

UTC    dB Audio  Message
115400 -21 1477  SP7FJX GJ0KYZ 73
120600  -7  769  SP7FJX IZ4JMA 73
105600 -19 1371  SP7FJX 7Z1BQ R-08

80m

UTC    dB Audio  Message
170045  +0 1209  SP8RPA SP7FJX +01
170100  +7  520  SP7FJX SP8RPA R-04 (x2)
170130  +7 1205  SP7FJX 9A4ZM JN86

20m

UTC    dB Audio  Message
193130  -6 2653  SP7FJX 4L7T R+13 (x2)
135900 -20 1647  SP7FJX EB3JT JN01 (x4)
141700 -14 2348  SP7FJX 2W0YOX IO81 (x4)
162000  -5  838  SP7FJX TA1CQ 73
162545 -11 2324  SP7FJX OZ9FF R-12
175400  -4 1988  SP7FJX SV9ANC 73

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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