UA4PDJ — 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: European Russia Most frequent locator attributed to this token: LO45

Receiver-side FT8 activity involving UA4PDJ, decoded by SO8OO in southeastern Poland. 1,049 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 84 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-22.

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 1,049 FT8 messages attributed to UA4PDJ as the transmitting token by decoded message structure across 84 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (48%), followed by 80 m (30%) and 20 m (22%). The busiest six-hour window was 22:00-04:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

1,049

Messages attributed

UTC dates decoded

243

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 6 80m · 315 40m · 499 20m · 229

First attributed message: 2026-06-07
Last attributed message: 2026-10-22 03:50 UTC

Observed FT8 message patterns

Attributed sample: 1,049 messages
Active dates: 84 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -19 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 244, moderate (-15 to -9 dB) 417, strong (≥ -8 dB) 388.

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 UA4PDJ in decoded directed-looking exchanges:

UA3IDQ · European Russia ×3 II5GG · Italy ×2 ON4ASV · Belgium ×2 R4HMI · European Russia ×2 R70SAB · European Russia ×2 RV3V · European Russia ×2 S57ZT · Slovenia ×2 RA3WY · European Russia RM5F · European Russia HK3YL · Colombia KB3Z · United States N6YJ · United States

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 UA4PDJ

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: LO45 · 689 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,920 km (approx.)
Last such locator decoded: 2026-10-22 03:50 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	UA4PDJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 03:49	40m	-16 / -	EP2AES	- / -	2	Partial capture
10-22 03:45	40m	-17 / -	C5R	- / -	3	Partial capture
10-22 03:42	40m	-9 / -	EP2AES	- / -	3	Partial capture
10-22 03:40	40m	-7 / -	IZ8XXE	- / -11	3	✓ Closing fragment
10-20 23:35	80m	-7 / -13	G6PWS	-4 / -13	5	✓ Full exchange observed
10-20 23:30	80m	-6 / -17	ON4DXL	+4 / -15	7	✓ Full exchange observed
10-20 23:25	80m	-12 / -9	9A60CBM	+11 / -11	2	Partial capture
10-20 23:24	80m	- / -	R4FDD	-11 / -	3	Partial capture
10-20 23:17	80m	-8 / -8	SV5DZR	-15 / -22	6	✓ Full exchange observed
10-20 15:51	40m	-19 / -	M7FSE	- / -	2	Partial capture
10-20 15:41	40m	- / -17	R4PFY	-13 / -	3	Partial capture
10-20 15:39	40m	-11 / -3	RK6YD	-8 / -	3	✓ Closing observed
10-19 03:44	40m	-8 / -22	M6WRB	-12 / -25	15	✓ Full exchange observed
10-19 03:39	40m	-4 / -7	R6NA	+9 / 0	7	✓ Full exchange observed
10-19 03:32	40m	- / -1	UD8D	-8 / -	2	Partial capture
10-19 03:31	40m	-10 / -	VE2LBI	- / -	4	Partial capture
10-19 03:24	40m	0 / -	W7VA	- / -	5	Partial capture
10-19 03:16	40m	- / -12	IU7FQK	+1 / -	3	Partial capture
10-19 03:05	40m	-14 / -14	ON8WR	-1 / -20	9	✓ Full exchange observed
10-19 02:58	40m	-9 / -	W9JOY	- / -18	10	Partial capture
10-18 03:18	40m	-5 / -5	UA6LCF	-3 / -4	6	✓ Full exchange observed
10-18 03:08	40m	-16 / -14	S57ZT	-13 / -18	5	✓ Full exchange observed
10-18 03:04	40m	-3 / -	IU8RFW	+2 / -21	9	Partial capture
10-18 03:02	40m	-19 / +1	RA8CO	-6 / -	3	✓ Closing observed
10-18 02:58	40m	0 / -	IU8RFW	-6 / -13	6	Partial capture
10-15 18:46	80m	- / -4	UB3DSR	-1 / -	4	✓ Closing fragment
10-15 18:41	80m	-7 / -	R3XDT	- / -	3	Partial capture
10-15 18:37	80m	-15 / -	JH2VVH	-15 / -	2	✓ Closing observed
10-15 18:36	80m	-6 / -	R3XDT	- / -	2	Partial capture
10-14 16:41	40m	-18 / -	R3KSJ	- / -	2	✓ Closing fragment
10-14 16:21	40m	-16 / -	RA4AID	-23 / -12	5	✓ Closing observed
10-14 16:13	40m	-15 / -2	R7ZY	0 / -	4	✓ Closing observed
10-14 15:35	40m	-14 / +1	IK2ZJR	+3 / -15	4	✓ Full exchange observed
10-14 02:58	40m	-8 / -	UN0GY	- / -22	2	Partial capture
10-13 15:23	40m	-10 / -	HS0ZGV	- / -	3	Partial capture
10-13 01:29	40m	- / -9	OD5XX	+10 / -	2	Partial capture
10-12 15:50	40m	-14 / -	UB3BHW	- / -9	4	✓ Closing fragment
10-12 15:45	40m	-16 / -	R7RCO/M	- / -16	4	Partial capture
10-12 15:36	40m	-9 / -	UA3IDQ	- / -15	3	✓ Closing fragment
10-11 15:42	40m	-8 / -	UB4HVA	- / -6	2	✓ Closing fragment
10-11 15:40	40m	- / -	UB4HVA	-10 / -	2	Partial capture
10-11 15:39	40m	- / -	RW3SB	-15 / -	2	Partial capture
10-10 00:21	40m	-14 / -	A60WSW/5	- / -10	3	Partial capture
10-10 00:08	40m	-1 / -12	F6FDY	+11 / -16	4	✓ Full exchange observed
10-10 00:06	40m	-11 / -	9H6C	- / -13	3	✓ Closing fragment
10-10 00:03	40m	-14 / -	9A5MP	- / -19	4	✓ Closing fragment
10-10 00:01	40m	-17 / -15	CT7AXN	-17 / -20	5	✓ Full exchange observed
10-09 23:54	40m	-10 / -	IQ0AAX	-15 / -6	3	✓ Closing observed
10-09 23:29	80m	-16 / +6	RA4CFX	-3 / -1	3	✓ Full exchange observed
10-09 17:09	80m	-17 / -	RZ6HBK	- / -21	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
154230 -13 1935  UA4PDJ R4PFY -17
155100 -19 1416  M7FSE UA4PDJ LO45 (x2)
034015 -11 2427  IZ8XXE UA4PDJ LO45 (x3)
034215  -7 2362  EP2AES UA4PDJ LO45 (x3)
034415  +7 2841  IU8RFW UA4PDJ -13
034545 -12 1739  C5R UA4PDJ LO45 (x3)
034945 -15 2363  EP2AES UA4PDJ LO45 (x2)

80m

UTC    dB Audio  Message
232515 -10 1746  UA4PDJ R4FDD LO33
232515 +11 1888  UA4PDJ 9A60CBM R-09
232545 -13 1746  UA4PDJ R4FDD LO33
233015  -7 2527  ON4DXL UA4PDJ LO45 (x3)
233130  +0 2527  UA4PDJ ON4DXL -17
233145  +1 2528  ON4DXL UA4PDJ R-15
233200  +8 2527  UA4PDJ ON4DXL RR73
233215 -11 2527  ON4DXL UA4PDJ 73
233500  -6 1166  G6PWS UA4PDJ LO45
233515  -2 1165  UA4PDJ G6PWS -13
233530 -10 1166  G6PWS UA4PDJ R-13
233545  -5 1165  UA4PDJ G6PWS RR73
233600  -5 1166  G6PWS UA4PDJ 73

160m

UTC    dB Audio  Message
220830  -2 1251  UA4PDJ RA3WY R-19
220930  +8  622  UA4PDJ RM5F KO85
220930  +0 1251  UA4PDJ RA3WY 73
221000 +11  622  UA4PDJ RM5F R-22 (x2)
221645 -24 1947  <RV9CX/M> UA4PDJ +04 (x6)
223330  -3 1037  UA4PDJ UA3IDQ -20 (x2)
223530  +4  761  UA4PDJ R5AV -17
233945 -22 2119  UA4PDJ RK5M -13

20m

UTC    dB Audio  Message
072200  -2 2452  R6OY UA4PDJ LO45 (x5)
072800 -12 1540  OH1LA UA4PDJ RR73
073145 -12  668  RO6OP UA4PDJ LO45
073200  +1 1118  UA4PDJ RO6OP -14
073215  -6  668  RO6OP UA4PDJ R-09
073230  +8 1119  UA4PDJ RO6OP RR73
073245  -9  669  RO6OP UA4PDJ 73
140615  -5 1848  RM6OS UA4PDJ LO45 (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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