PD3RFR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Most frequent locator attributed to this token: JO22

Receiver-side FT8 activity involving PD3RFR, decoded by SO8OO in southeastern Poland. 221 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-03 and 2026-08-30.

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 221 FT8 messages attributed to PD3RFR as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (62%) 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 (63%); the estimated median was -4.6 dB.

Overview

221

Messages attributed

UTC dates decoded

Active 15-min windows

-4.6 dB

Estimated median S/N

Bands

20m · 221

First attributed message: 2026-07-03
Last attributed message: 2026-08-30 17:35 UTC

Observed FT8 message patterns

Attributed sample: 221 messages
Active dates: 6 UTC dates
Estimated median S/N: -4.6 dB
Estimated 10th-90th percentile: -18 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 37, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 139.

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 PD3RFR in decoded directed-looking exchanges:

CS2WWA · Portugal DA0WWA · Fed. Rep. of Germany DF2SL · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany EA2EDI · Spain EA4ILV · Spain EA5JLN · Spain IK4LZH · Italy IU2QDY · Italy IZ0AIO · Italy M8GGQ · England MW7TTA · Wales

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 PD3RFR

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: JO22 · 157 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,201 km (approx.)
Last such locator decoded: 2026-08-30 17:34 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	PD3RFR S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 17:34	20m	+3 / -7	EA5JLN	+2 / -16	5	✓ Full exchange observed
08-30 17:19	20m	-4 / -7	T77RN	-6 / -13	9	✓ Full exchange observed
08-30 16:47	20m	-5 / -12	M8GGQ	+4 / -18	5	✓ Full exchange observed
08-30 16:28	20m	+2 / -	YO9IAB	- / -16	5	✓ Closing fragment
08-30 15:40	20m	-16 / -	R2DYN	- / -	4	Partial capture
08-30 13:13	20m	-13 / -	UB8CPH	- / -	4	Partial capture
08-30 13:06	20m	-6 / -	UR5XEJ	- / -17	4	Partial capture
08-30 13:01	20m	-8 / -	OM1AMT	- / -18	6	Partial capture
08-30 12:52	20m	-7 / -	LY5G	- / -16	7	Partial capture
08-30 12:42	20m	-12 / -	IU2QDY	-21 / -	2	✓ Closing observed
08-30 12:37	20m	-10 / +5	IZ0AIO	-16 / -10	4	✓ Full exchange observed
08-30 12:33	20m	- / +1	IK4LZH	-2 / -	4	✓ Closing fragment
08-30 12:25	20m	-6 / -	YL3QZ	- / -10	2	✓ Closing fragment
08-30 11:48	20m	-14 / -	II7MGBA	- / -	2	Partial capture
08-30 11:46	20m	- / -	TA3F	-12 / -	3	Partial capture
08-30 11:42	20m	- / -	TA3F	-10 / -	2	Partial capture
08-30 11:33	20m	-4 / -	SP9SIR	- / -16	6	✓ Closing fragment
08-30 11:26	20m	-4 / -	DL9KM	- / -9	3	✓ Closing fragment
08-30 11:21	20m	+15 / -	EA4ILV	- / -13	8	✓ Closing fragment
08-30 11:12	20m	+2 / -	TC30AGU	- / -	2	Partial capture
08-30 09:46	20m	- / -	F4BYA	+9 / -	3	Partial capture
08-30 09:46	20m	- / -	PD1HPB	+6 / -	11	Partial capture
08-30 09:39	20m	- / -13	F4AWT	-8 / -	5	Partial capture
08-30 09:38	20m	- / -	F4BYA	+8 / -	4	Partial capture
08-30 09:33	20m	-13 / -	F5SFT	- / -	5	Partial capture
08-26 18:48	20m	-8 / -	ZS6BAF	- / -	2	Partial capture
08-26 18:44	20m	+1 / -16	TA1MB	+10 / -5	7	✓ Full exchange observed
08-26 18:37	20m	+2 / -	DF2SL	- / -22	2	✓ Closing fragment
08-26 18:35	20m	+10 / -	RZ4FWA	- / -20	2	✓ Closing fragment
08-26 18:35	20m	- / -4	ON1DGN	-4 / -	2	Partial capture
08-26 18:19	20m	+2 / -20	EX7DY	-20 / -16	14	Partial capture
08-26 18:12	20m	-1 / -	RI1FJL	- / -	14	Partial capture
07-16 14:03	20m	-14 / -	S09S	- / -	3	Partial capture
07-16 13:59	20m	-15 / -	S09S	- / -	2	Partial capture
07-15 19:54	20m	-16 / -	TA6MMI	- / -	2	✓ Closing fragment
07-15 19:31	20m	-19 / -	JH5AVM	- / -	2	Partial capture
07-15 19:21	20m	-18 / -	KF0YOB	- / -15	3	Partial capture
07-15 15:33	20m	- / -4	MW7TTA	+3 / -	5	✓ Closing fragment
07-12 11:42	20m	-18 / -	OM7AMA	- / -15	2	Partial capture
07-03 13:15	20m	-17 / -	SK3WWA	- / -	5	Partial capture
07-03 12:59	20m	-20 / -20	II7WWA	-17 / -22	18	Partial capture
07-03 12:57	20m	-21 / +10	DA0WWA	-8 / -	2	✓ Closing observed
07-03 12:55	20m	-21 / -	II1WWA	- / -7	2	Partial capture
07-03 12:45	20m	-19 / -	CS2WWA	- / -11	6	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
164845  -2 2851  M8GGQ PD3RFR 73
171945  -3 2714  T77RN PD3RFR JO22
172000  -8 2714  PD3RFR T77RN -07
172015  +0 2714  T77RN PD3RFR JO22
172030 -11 2714  PD3RFR T77RN -06
172045  -3 2714  T77RN PD3RFR R-13
172100  -1 2714  PD3RFR T77RN RR73
172115  -6 2714  T77RN PD3RFR R-13
172130  -5 2714  PD3RFR T77RN RR73
172145  -7 2714  T77RN PD3RFR 73
173400  +1 2655  EA5JLN PD3RFR JO22
173415  +0 2654  PD3RFR EA5JLN -07
173430  +6 2655  EA5JLN PD3RFR R-16
173445  +4 2654  PD3RFR EA5JLN RR73
173500  +1 2655  EA5JLN PD3RFR 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.

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