PD9OH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Netherlands Most frequent locator attributed to this token: JO21

Receiver-side FT8 activity involving PD9OH, decoded by SO8OO in southeastern Poland. 3,684 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 3,684 FT8 messages attributed to PD9OH as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (57%), followed by 40 m (31%) and 10 m (12%). Decoded messages were spread across the UTC day; the busiest six-hour window (23:00-05:00 UTC) held 34% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

3,684

Messages attributed

UTC dates decoded

479

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 1,159 20m · 2,087 10m · 438

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 05:05 UTC

Observed FT8 message patterns

Attributed sample: 3,684 messages
Active dates: 29 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -18 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 586, moderate (-15 to -9 dB) 1,006, strong (≥ -8 dB) 2,092.

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 PD9OH in decoded directed-looking exchanges:

OZ9MSD · Denmark R3HH · European Russia R6FMF · European Russia 2D0VPS/P · Isle of Man 4X1YY · Israel 8A1WWA · Indonesia 9A5EX · Croatia A65JR · United Arab Emirates A91LD · Bahrain A92GE · Bahrain AA6XM · United States BH8VRO · China

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 PD9OH

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 · 2,881 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-09-20 05:05 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	PD9OH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 04:54	40m	-10 / -	K1IO	- / -	2	Partial capture
09-20 04:34	40m	-9 / -	W5RGO	- / -	2	Partial capture
09-20 04:15	40m	+2 / -	K0YEQ	- / -	2	Partial capture
09-20 04:05	40m	-2 / -	K8SAW	- / -	3	Partial capture
09-20 03:58	40m	0 / -	LU1XLI	- / -	3	Partial capture
09-20 03:55	40m	-5 / -	K4NWX	- / -	2	Partial capture
09-20 03:32	40m	+4 / -	WB4HAM	- / -	2	Partial capture
09-20 03:28	40m	+2 / -	KE5ETC	- / -	4	Partial capture
09-20 03:23	40m	+1 / -	W4SFD	- / -	4	Partial capture
09-20 03:21	40m	+1 / -	WA4IPU	- / -	3	Partial capture
09-20 03:20	40m	0 / -	W4SFD	- / -	2	Partial capture
09-20 03:17	40m	-3 / -	W3GO	- / -9	3	✓ Closing fragment
09-20 03:15	40m	+1 / -	W4SFD	- / -	3	Partial capture
09-20 03:14	40m	+4 / -	NJ3T	- / -	2	Partial capture
09-20 03:08	40m	-1 / -	KN4WJY	- / -6	4	✓ Closing fragment
09-20 03:07	40m	+2 / -	WA4IPU	- / -	2	Partial capture
09-20 03:01	40m	-5 / -	WA4IPU	- / -15	5	Partial capture
09-20 02:59	40m	-8 / -	YN1ZGN	- / -	2	Partial capture
09-20 02:57	40m	+10 / -	KS2L	- / -	3	Partial capture
09-20 02:54	40m	+9 / -	KD4EXS	- / -	3	Partial capture
09-20 02:51	40m	0 / -	KA8ARI	- / -	4	Partial capture
09-20 02:44	40m	-2 / -	VE2AHG	- / -	6	Partial capture
09-20 02:42	40m	-2 / -	YN1ZGN	- / -	3	Partial capture
09-20 02:41	40m	+4 / -	KQ4ZAX	- / -	2	Partial capture
09-20 02:40	40m	-2 / -	KD3DIX	- / -12	3	✓ Closing fragment
09-20 02:38	40m	+7 / -	KD4EXS	- / -	3	Partial capture
09-20 02:27	40m	+10 / -	N0BUZ	- / -8	17	✓ Closing fragment
09-20 02:24	40m	+1 / -	AG5ND	- / -	3	Partial capture
09-20 02:21	40m	+8 / -	N0BUZ	- / -	4	Partial capture
09-20 02:20	40m	-11 / -	LU9GDN	- / -	3	Partial capture
09-20 02:13	40m	+2 / -	N0BUZ	- / -	4	Partial capture
09-20 02:11	40m	0 / -	AG5ND	- / -	3	Partial capture
09-20 02:08	40m	0 / -	LU9GDN	- / -	4	Partial capture
09-20 02:01	40m	+9 / -	W9MEG	- / -	3	Partial capture
09-20 01:58	40m	+5 / -	KE2GLH	- / -	2	Partial capture
09-20 01:54	40m	-3 / -	W5MYR	- / -	5	Partial capture
09-20 01:52	40m	-2 / -	KE2GLH	- / -	4	Partial capture
09-20 01:50	40m	-1 / -	N4SIM	- / -	3	Partial capture
09-20 01:48	40m	+8 / -	CE3TMM	- / -	2	Partial capture
09-20 01:46	40m	+2 / -	K4RPP	- / -24	3	✓ Closing fragment
09-20 01:45	40m	0 / -	CO7WF	- / -	2	Partial capture
09-20 01:42	40m	+8 / -	KD2NFC	- / -	3	Partial capture
09-20 01:39	40m	+10 / -	KE2GLH	- / -	2	Partial capture
09-20 01:37	40m	+10 / -	AE8TA	- / -	4	Partial capture
09-20 01:30	40m	-1 / -	W5MYR	- / -	2	Partial capture
09-20 01:27	40m	0 / -	CO7WF	- / -	2	Partial capture
09-20 01:23	40m	+2 / -	W5MYR	- / -	3	Partial capture
09-20 01:21	40m	0 / -	AE4RC	- / -	3	Partial capture
09-20 01:08	40m	-1 / -	KQ4TDQ	- / -	2	Partial capture
09-20 01:04	40m	+9 / -	WB9RAS	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
035945  +1 2219  LU1XLI PD9OH JO21
040545  -1 1042  K8SAW PD9OH JO21 (x3)
041515  +3  916  K0YEQ PD9OH JO21 (x2)
042015  +3  482  W1GSD PD9OH JO21
043115  -9 1907  VA3PKU PD9OH JO21
043415  -8 1541  W5RGO PD9OH JO21 (x2)
043745  -4 1798  KD2NGL PD9OH R-24
044345  -8 1540  W5RGO PD9OH JO21
045445 -13 2412  K1IO PD9OH JO21 (x2)
050515  -9  958  NB4Y PD9OH JO21

20m

UTC    dB Audio  Message
134915  +5 2712  BA3NZ PD9OH JO21 (x2)
135115  +1 2580  YO3BMI PD9OH JO21
135815  +3 2711  BA3NZ PD9OH JO21 (x4)
142545  -7 2249  UN8DAW PD9OH JO21
142715  -6 2528  9M2NAQ PD9OH JO21
142915 -15 2247  UN8DAW PD9OH JO21
143715 -13 2712  BA3NZ PD9OH JO21
143915 -14 2527  9M2NAQ PD9OH JO21
145830 -12 1513  PD9OH EX7DY -18
151530 -13 2229  PD9OH UN7IV -14 (x2)

10m

UTC    dB Audio  Message
135245 -20 1903  R4AGO PD9OH JO21 (x6)
164415 -12 1466  EA5JKM PD9OH R-04
164600 -13 1626  PD9OH R6FMF RR73
164945 -16 1403  EA4JAU PD9OH JO21
165145 -17 1766  OZ0JX PD9OH JO21 (x3)
173045  -8  627  EC5M PD9OH JO21 (x3)

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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