PD8SA — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving PD8SA, decoded by SO8OO in southeastern Poland. 48 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-21 and 2026-07-22.

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 48 FT8 messages attributed to PD8SA as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -5 dB; no usual signal pattern is inferred.

Overview

48
Messages attributed
2
UTC dates decoded
7
Active 15-min windows
-5 dB
Estimated median S/N

Bands

20m · 48
First attributed message: 2026-07-21
Last attributed message: 2026-07-22 17:41 UTC

Observed FT8 message patterns

Attributed sample
48 messages
Active dates
2 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-14 to +1 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 35.

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 PD8SA in decoded directed-looking exchanges:

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 PD8SA

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
2026-07-21 21:19 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 UTCBandPD8SA S/NCounterpartCounterpart S/NMsgsCapture
07-23 11:56 20m - / -8 DL1YS -14 / - 2 ✓ Closing fragment
07-23 07:41 20m - / -5 ES7GN -18 / - 2 ✓ Closing fragment
07-22 22:49 20m - / -4 SM6KTO -17 / - 7 Partial capture
07-22 21:36 20m - / -6 A61QQ -11 / - 5 ✓ Closing fragment
07-22 21:01 20m - / -11 A61QQ -10 / - 2 Partial capture
07-22 20:27 20m - / -13 CS8ABF -13 / - 2 ✓ Closing fragment
07-22 18:38 20m - / -14 EA8UP -4 / - 7 Partial capture
07-22 17:39 20m -15 / -13 CR7BRV +1 / -24 5 ✓ Full exchange observed
07-22 14:06 20m - / -13 UA3RAU -16 / - 3 ✓ Closing fragment
07-22 10:33 20m - / -10 9A9TT -8 / - 3 ✓ Closing fragment
07-21 21:35 20m - / +5 E70A -12 / - 4 Partial capture
07-21 21:28 20m - / -9 CT1EDA -2 / - 2 Partial capture
07-21 21:18 20m -10 / -7 CT1EDA 0 / - 8 ✓ Closing observed
07-21 21:13 20m -4 / - PA3KUS -12 / +5 4 ✓ Closing observed
07-21 21:09 20m -2 / -13 IK0ISD -16 / +1 6 Partial capture
07-21 21:08 20m -7 / - HG8LXL - / -9 2 Partial capture
07-21 21:08 20m - / - CT1BFP -9 / - 10 Partial capture
07-21 20:40 20m -2 / - UR5KC - / -17 6 ✓ Closing fragment
07-21 20:37 20m -3 / - LY5J - / - 5 Partial capture
07-21 20:34 20m -1 / -7 E70A -7 / - 3 Partial capture
07-21 20:23 20m -5 / - US5WFL - / -13 3 Partial capture
07-21 20:20 20m -6 / - US5WFL - / -13 2 Partial capture
07-21 18:56 20m -14 / - CR7BUJ - / - 3 Partial capture
07-21 17:48 20m -14 / - CN2DX - / - 2 Partial capture
07-21 17:38 20m - / - IU5HIU -10 / - 3 Partial capture
07-19 19:09 20m - / -11 YO4NF -7 / - 2 Partial capture
07-19 17:05 20m - / +7 DK6WS -16 / - 3 Partial capture
07-19 16:22 20m - / - DL3EBJ -18 / - 2 ✓ Closing fragment
07-13 10:51 10m - / -16 <...> -20 / - 6 Partial capture
07-13 10:17 10m - / -15 E75W -8 / - 5 Partial capture
07-13 09:22 10m - / -12 SV7BAY 0 / - 3 ✓ Closing fragment
07-13 08:19 10m - / -18 LZ4VR -15 / - 3 ✓ Closing fragment
07-12 07:25 20m - / -2 R2AL -8 / - 2 ✓ Closing fragment
07-11 20:23 20m - / -1 EC5M -19 / - 2 ✓ Closing fragment
07-11 13:00 20m - / -16 EA1N -3 / - 4 ✓ Closing fragment
07-11 12:29 40m - / -7 DK7ZT -21 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
213900 -13  913  PD8SA A61QQ RR73
224900 -19 1807  PD8SA SM6KTO -04 (x7)
071945  -6 3047  PD8SA PD4RD -16
073030  -3 2405  PD8SA 9A4ZM JN86
074100 -17 1463  PD8SA ES7GN -05 (x2)
115315  -7 2966  PD8SA IU5HIU JN53
115615 -14  883  PD8SA DL1YS -08 (x2)
10m 
UTC    dB Audio  Message
092245  +0  908  PD8SA SV7BAY -12 (x3)
101745  -5 2370  PD8SA E75W -15 (x5)
104845 -18 1547  PD8SA <...> -16 (x7)
40m 
UTC    dB Audio  Message
122900 -18 1906  PD8SA DK7ZT -07 (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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