PD0NAH — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving PD0NAH, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-12.

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 50 FT8 messages attributed to PD0NAH as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (76%), followed by 20 m (24%). Most decodes (70%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 38 20m · 12

First attributed message: 2026-06-18
Last attributed message: 2026-09-12 18:27 UTC

Observed FT8 message patterns

Attributed sample: 50 messages
Active dates: 6 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -24 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 10.

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 PD0NAH in decoded directed-looking exchanges:

5Z4VJ · Kenya 9J2FI · Zambia F4NBB · France IZ4JMA · Italy F4AWT · France F5HNQ · France 2E0UMK · England 5Q1X · Denmark DL9KM · Fed. Rep. of Germany E78Y · Bosnia-Herzegovina GX4RAF/P · England OE3FVU · Austria

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 PD0NAH

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 · 29 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-09-12 18:24 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	PD0NAH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 13:02	40m	- / -	S51PV	-10 / -	2	Partial capture
09-14 13:06	10m	- / 0	5Z4VJ	-14 / -	2	✓ Closing fragment
09-14 12:58	10m	- / -3	9J2FI	0 / -	2	✓ Closing fragment
09-12 18:24	40m	-7 / -8	R1QF	-8 / -	3	✓ Closing observed
09-12 18:24	40m	-6 / -24	RM5C	-8 / -15	4	Partial capture
09-12 18:15	40m	-3 / -15	E78Y	-4 / -1	6	✓ Full exchange observed
09-10 14:10	40m	-18 / -	5Q1X	- / -6	3	✓ Closing fragment
09-10 14:08	40m	-18 / -	2E0UMK	- / +1	2	✓ Closing fragment
09-10 14:04	40m	- / -20	F4MZI	-17 / -	4	Partial capture
09-10 13:58	40m	-21 / -	OZ1SMB	-10 / +3	3	Partial capture
09-10 13:55	40m	-22 / -	SM7RDT	- / -9	2	✓ Closing fragment
09-10 13:53	40m	- / -	PD0JHM	-14 / -	2	Partial capture
09-08 09:51	40m	- / -	HA9OA	-1 / -	3	Partial capture
09-08 09:47	40m	- / -8	OE3FVU	-10 / -	3	✓ Closing fragment
09-08 09:21	40m	- / -1	DL9KM	-12 / -	3	✓ Closing fragment
09-08 09:16	40m	- / -4	OZ7LC	-18 / -	2	✓ Closing fragment
09-03 09:18	40m	- / -	PE9JAN	-9 / -	2	Partial capture
09-03 09:03	40m	- / -	OE3FVU	-6 / -	3	Partial capture
08-15 09:08	20m	- / -10	F5NNN	-10 / -	2	Partial capture
08-15 09:04	20m	- / -2	F4AWT	-13 / -	3	✓ Closing fragment
08-11 12:31	20m	- / -21	RU3QR	-23 / -	3	Partial capture
08-11 09:18	10m	- / -	UA3VVA	-14 / -	2	Partial capture
08-11 08:56	20m	- / +5	F5HNQ	-19 / -	3	✓ Closing fragment
08-11 08:49	20m	- / -	RV6F	-15 / -	5	Partial capture
08-11 08:43	20m	- / -	DM5KK	-23 / -	2	Partial capture
08-11 08:32	20m	- / -	F1PPH	-21 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
181630  -3 1570  E78Y PD0NAH 73
181700  -3 1570  CQ PD0NAH JO21 (x2)
182045  -1 2701  PD0NAH DL1YFS JO41
182300  -6 1570  F3CJ PD0NAH +01
182400  -5 1570  CQ PD0NAH JO21
182445  -9  825  PD0NAH RM5C -24
182445 -11 2524  PD0NAH R1QF -08
182515  -7  824  PD0NAH RM5C -24
182515  -5 2524  PD0NAH R1QF -08
182600  -7 1571  R1QF PD0NAH 73
182630  -6 1571  RM5C PD0NAH R-15 (x2)
130215 -10 2349  PD0NAH S51PV JN76 (x2)

10m

UTC    dB Audio  Message
091800 -13 1458  PD0NAH UA3VVA LO06 (x2)
093100 -23 1887  PD0NAH IZ4JMA 73
094100 -13 2642  PD0NAH SV1EKI KM18
124400 -21 1449  PD0NAH F4NBB RR73
125845  -1 2808  PD0NAH 9J2FI -03 (x2)
130630 -15 2389  PD0NAH 5Z4VJ +00 (x2)

20m

UTC    dB Audio  Message
085630 -21 2271  PD0NAH F5HNQ IN98 (x3)
090430 -10 2478  PD0NAH IQ4JO -10
090430  +7 2725  PD0NAH F1PBZ -10
090600 -14 1286  PD0NAH F4AWT JN24
123100 -24 1621  PD0NAH RU3QR -21
123100 -16 1122  PD0NAH F5IXN JN23
123130 -22 1621  PD0NAH RU3QR -21 (x2)
090400 -12 2022  PD0NAH F4AWT JN24 (x3)
090830  -9  629  PD0NAH F5NNN IN94 (x2)

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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