PD4I — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving PD4I, decoded by SO8OO in southeastern Poland. 15 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-02.

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 15 FT8 messages attributed to PD4I as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (80%), followed by 20 m (20%). In this small sample, the estimated median decoder S/N was -13 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 12 20m · 3

First attributed message: 2026-06-07
Last attributed message: 2026-08-02 23:32 UTC

Observed FT8 message patterns

Attributed sample: 15 messages
Active dates: 3 UTC dates
Estimated median S/N: -13 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 3.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with PD4I in decoded directed-looking exchanges:

EA8UP · Canary Islands F4DUZ · France IK1RQX · Italy IZ6ENY · Italy UA4FOH · European Russia 4L7T · Georgia 7X5CY · Algeria A61BG · United Arab Emirates EB5AKG · Spain IQ4JO · Italy EC3A · Spain HG8LXL · Hungary

Most frequent locator attributed to PD4I

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 · 8 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,201 km (approx.)
Last such locator decoded: 2026-08-02 23:28 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	PD4I S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-06 21:10	20m	- / -13	A61BG	-6 / -	2	✓ Closing fragment
08-06 21:00	20m	- / -	EB5AKG	-15 / -	2	✓ Closing fragment
08-06 20:54	20m	- / -	7X5CY	-5 / -	2	✓ Closing fragment
08-05 00:12	20m	- / -11	IQ4JO	-14 / -	3	✓ Closing fragment
08-04 13:54	20m	- / -	EA3HMM	-8 / -	2	Partial capture
08-02 23:43	20m	- / -	4L7T	-6 / -	2	✓ Closing fragment
08-02 23:32	40m	- / -12	R2EA	-4 / -	2	✓ Closing fragment
08-02 23:30	40m	-11 / -16	UA9CR	-10 / -4	6	✓ Full exchange observed
08-02 23:28	40m	-16 / -	TJ1GD/P	- / -9	2	Partial capture
07-26 19:43	20m	-4 / -	OZ9FF	- / -13	3	Partial capture
07-12 22:01	40m	- / -14	HG8LXL	-10 / -	3	✓ Closing fragment
06-28 20:30	10m	- / -8	F4DUZ	-4 / -	2	✓ Closing fragment
06-28 20:28	10m	- / -8	IZ6ENY	-2 / -	2	✓ Closing fragment
06-28 20:13	10m	- / -	EA8UP	-14 / -	2	✓ Closing fragment
06-28 20:10	10m	- / -9	IK1RQX	+11 / -	2	✓ Closing fragment
06-28 20:05	10m	- / -	IK1RQX	+12 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
234345  -3  345  PD4I 4L7T RR73 (x2)
135445  -8  509  PD4I EA3HMM JN00 (x2)
231930 -15 1539  PD4I CT3IQ +06
001200 -16 2143  PD4I IQ4JO JN63 (x3)
205230  -8  856  PD4I TN8GD -13
205400  -3  482  PD4I 7X5CY +19 (x2)
210045 -16 2055  PD4I EB5AKG R+18 (x2)
211045  -9 1281  PD4I A61BG -13 (x2)

40m

UTC    dB Audio  Message
220145 -11 2526  PD4I HG8LXL -14 (x2)
220315 -19 1969  PD4I 9A4ZM R-06
220345  -9 2526  PD4I HG8LXL KN06
232845 -13 2327  TJ1GD/P PD4I JO22 (x2)
233030  -9  871  PD4I UA9CR -16 (x2)
233115 -11  653  UA9CR PD4I R-04 (x2)
233200 -10  872  PD4I UA9CR RR73
233215 -10  654  UA9CR PD4I 73
233230  -4  727  PD4I R2EA -12 (x2)
233645 -20 1147  PD4I EC3A RR73

10m

UTC    dB Audio  Message
195200 -15  798  PD4I CT7BQA +12
200545 +13 2616  PD4I IK1RQX JN44 (x5)
201330 -11 1776  PD4I EA8UP +13 (x2)
201730 -11 2484  PD4I DK6DX -16
202530 -12  797  PD4I S56KO RRR
202845  -2 1423  PD4I IZ6ENY -08 (x2)
203015  -5  987  PD4I F4DUZ -08 (x2)
203215 -15 2236  PD4I UA4FOH RR73

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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