PA4RFS — 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: Netherlands Most frequent locator attributed to this token: JO21

Receiver-side FT8 activity involving PA4RFS, decoded by SO8OO in southeastern Poland. 490 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 27 UTC dates in the available aggregate history. Observed between 2026-08-19 and 2026-10-11.

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 490 FT8 messages attributed to PA4RFS as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 20 m (33%) and 80 m (9%). The busiest six-hour window was 07:00-13:00 UTC, containing 38% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

490

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 45 40m · 282 20m · 163

First attributed message: 2026-08-19
Last attributed message: 2026-10-11 21:48 UTC

Observed FT8 message patterns

Attributed sample: 490 messages
Active dates: 27 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -17 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 71, moderate (-15 to -9 dB) 219, strong (≥ -8 dB) 200.

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 PA4RFS in decoded directed-looking exchanges:

IR8PR · Italy ×6 IQ8DO · Italy ×5 IZ8VYF · Italy ×2 IZ8XQC · Italy ×2 IZ8XXE · Italy ×2 AA3B · United States G6UJJ · England JN1ILK · Japan K5MGY · United States KC1ZWW · United States KF9UG · United States M8KKH · England

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 PA4RFS

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: JO21 · 344 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-10-11 21:47 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	PA4RFS S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-11 21:49	80m	- / -18	DK7ZT	-3 / -	5	Partial capture
10-11 21:46	80m	-12 / -12	IU8QRL	-18 / -16	5	✓ Full exchange observed
10-11 21:43	80m	- / -	DO9BAU	-9 / -	10	Partial capture
10-11 21:41	80m	-15 / -5	IZ8XXE	-6 / -7	5	✓ Full exchange observed
10-11 19:04	40m	-13 / -	IZ8VYF	- / 0	6	✓ Closing fragment
10-11 14:49	40m	-12 / -	IR8PR	- / -9	3	✓ Closing fragment
10-10 17:10	40m	- / -	9A4ZM	-6 / -	2	Partial capture
10-10 17:08	40m	-4 / -	IR8PR	- / -	2	✓ Closing fragment
10-10 14:07	40m	-16 / -	IU8CEU	- / -	2	Partial capture
10-10 07:37	40m	- / -	9A4ZM	-4 / -	2	Partial capture
10-10 07:35	40m	-17 / -	IQ8DO	- / +3	3	✓ Closing fragment
10-09 19:36	80m	-14 / -9	IQ8DO	-1 / -	2	✓ Closing observed
10-09 18:36	80m	- / -16	IR8PR	-10 / -	2	Partial capture
10-09 18:28	40m	-7 / +4	IZ8XQC	-8 / +5	6	✓ Full exchange observed
10-08 21:15	80m	-10 / -	IQ8DO	- / -	3	Partial capture
10-08 21:12	80m	-10 / -	IZ8XXE	- / -10	5	✓ Closing fragment
10-08 20:56	80m	-12 / -21	IQ8DO	-5 / -16	26	Partial capture
10-08 11:15	40m	- / -	9A4ZM	-6 / -	2	Partial capture
10-08 11:13	40m	-17 / -	IR8PR	- / -9	4	✓ Closing fragment
10-08 08:51	40m	- / -	9A4ZM	-14 / -	2	Partial capture
10-08 08:43	40m	-19 / -	IQ8DO	- / -15	6	Partial capture
10-07 21:05	80m	-13 / -	IQ8DO	- / -	4	Partial capture
10-07 20:28	80m	- / -14	YO4NF	+2 / -	2	Partial capture
10-07 19:39	40m	+2 / -7	IZ8DFO	-18 / +1	15	Partial capture
10-07 19:28	40m	+1 / -	IZ8VYF	- / +2	8	✓ Closing fragment
10-07 18:54	40m	-8 / -2	IZ8XQC	-9 / -	4	✓ Full exchange observed
10-07 15:05	40m	-8 / -	IR8PR	- / -21	3	✓ Closing fragment
10-07 07:10	40m	-16 / -	IQ8DO	- / -	3	✓ Closing fragment
10-06 19:29	40m	-7 / -	V51WH	- / -	12	Partial capture
10-05 15:02	40m	-14 / -	IQ8DO	- / -8	2	✓ Closing fragment
09-27 15:39	40m	-14 / -	SO100PKP	- / -	7	Partial capture
09-27 15:37	40m	-18 / -	SQ100PKP	- / -	4	Partial capture
09-25 15:04	40m	-17 / -	SQ100PKP	- / -	3	Partial capture
09-22 15:58	40m	-4 / -	G3EFG	-12 / -	3	Partial capture
09-22 15:04	40m	-10 / -	F4JZF/P	- / 0	2	Partial capture
09-20 14:51	40m	- / -	9A4ZM	-4 / -	2	Partial capture
09-20 14:51	40m	- / +10	DK7ZT	-11 / -	3	Partial capture
09-20 14:51	40m	- / -9	PE1NPS	-14 / -	2	✓ Closing fragment
09-15 07:33	40m	- / -	DL9KM	-5 / -	7	Partial capture
09-15 07:33	40m	- / -	HG8LXL	-3 / -	4	Partial capture
09-15 07:31	40m	-13 / -	LZ2II	- / +2	3	✓ Closing fragment
09-07 07:20	40m	- / -	9A4ZM	-3 / -	2	Partial capture
09-07 07:19	40m	- / +7	SQ100PKP	-12 / -	2	Partial capture
09-07 07:17	40m	- / -	DK8HC	-15 / -	2	Partial capture
09-06 15:54	40m	-8 / -	W1AW/0	- / -	2	Partial capture
09-05 07:42	40m	-10 / -	KJ5PTH	- / -	6	Partial capture
09-05 07:31	40m	- / -	DM5KK	-6 / -	4	Partial capture
09-05 07:26	40m	-9 / -	KE8ZMQ	- / -25	28	✓ Closing fragment
09-05 07:19	40m	-10 / -	WB4CTX	- / -	4	Partial capture
09-04 07:46	40m	-15 / -	KR4DEA	- / -	10	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
214630  -9 2302  PA4RFS DO9BAU JO62 (x2)
214715 -13 1615  IU8QRL PA4RFS JO21
214730 -18 2126  PA4RFS IU8QRL -12
214730 -10 2302  PA4RFS DO9BAU JO62
214745 -12 1615  IU8QRL PA4RFS R-16 (x2)
214830 -10 2302  PA4RFS DO9BAU JO62 (x2)
214900  -7 1615  PA4RFS DK7ZT -18
214930 -14 2302  PA4RFS DO9BAU JO62
214930  -2 1615  PA4RFS DK7ZT -18 (x4)

40m

UTC    dB Audio  Message
140745 -15 1207  IU8CEU PA4RFS JO21 (x2)
170815 -10 1206  IR8PR PA4RFS JO21 (x2)
171000  -6 1202  PA4RFS 9A4ZM JN86 (x2)
144915 -14  831  IR8PR PA4RFS JO21 (x3)
190430 -13 1555  IZ8VYF PA4RFS JO21 (x6)

20m

UTC    dB Audio  Message
134530  -5 1462  KF9UG PA4RFS JO21 (x3)
134645  +0 1462  PA4RFS EB3JT JN01 (x5)
140600  -2 1462  KA2YEG PA4RFS JO21 (x3)
192145 -15 1288  PA4RFS WB3CTP -18 (x4)

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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