PY4ZO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Brazil Most frequent locator attributed to this token: GH51

Receiver-side FT8 activity involving PY4ZO, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 10m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-10.

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 5 FT8 messages attributed to PY4ZO as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (100%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

5
Messages attributed
1
UTC dates decoded
1
Active 15-min windows
-9 dB
Estimated median S/N

Bands

10m · 5
First attributed message: 2026-06-10
Last attributed message: 2026-06-10 19:59 UTC

Observed FT8 message patterns

Attributed sample
5 messages
Active dates
1 UTC dates
Estimated median S/N
-9 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

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

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 PY4ZO in decoded directed-looking exchanges:

Most frequent locator attributed to PY4ZO

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
GH51
SO8OO receiver locator
KN09VW
Locator-centre separation
10,275 km (approx.)
Last such locator decoded
2026-06-10 19:50 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 UTCBandPY4ZO S/NCounterpartCounterpart S/NMsgsCapture
08-17 19:15 10m - / -3 UA6NT -13 / - 2 Partial capture
08-12 16:53 10m - / - DK8EE -17 / - 3 ✓ Closing fragment
07-29 19:06 10m - / -16 PD0HLA -7 / - 2 Partial capture
07-26 14:07 10m - / -14 F1PBZ -4 / - 2 ✓ Closing fragment
07-25 01:31 40m - / - RX3ASQ -18 / - 2 Partial capture
07-10 18:47 10m - / - DD1GN -14 / - 3 Partial capture
07-10 18:47 10m - / -14 DL2IAC -5 / - 3 ✓ Closing fragment
07-07 18:18 10m - / - ON4WV -22 / - 2 Partial capture
07-03 18:16 10m - / - F1SZC -4 / - 5 Partial capture
06-28 18:59 10m - / - IK4LZH 0 / - 4 Partial capture
06-28 18:52 10m - / - DN9AD -6 / - 4 Partial capture
06-28 18:42 10m - / - II2MPP +8 / - 11 Partial capture
06-28 18:40 10m - / -3 EW8AP -6 / - 2 Partial capture
06-27 18:04 10m - / - R3ZMM -2 / - 3 Partial capture
06-27 18:01 10m - / - R3ZMM -5 / - 2 Partial capture
06-26 17:56 10m - / - RZ3ZY -4 / - 2 Partial capture
06-25 18:11 10m - / -9 UA3EDQ 0 / - 3 ✓ Closing fragment
06-23 23:02 60m - / -18 OR0A -6 / - 2 Partial capture
06-23 22:27 60m - / - LA9GX +2 / - 2 Partial capture
06-23 22:26 60m - / - CR7BRV -5 / - 2 ✓ Closing fragment
06-23 22:23 60m - / -16 G6CUT +2 / - 3 ✓ Closing fragment
06-23 22:16 60m - / -20 G4ZFJ +2 / - 6 ✓ Closing fragment
06-23 22:15 60m - / -18 F5MYK -4 / - 4 ✓ Closing fragment
06-23 22:12 60m - / - G6CUT 0 / - 4 Partial capture
06-23 22:12 60m - / - ON7GB +5 / - 6 ✓ Closing fragment
06-23 22:07 40m - / - F1IQH -8 / - 2 Partial capture
06-23 20:49 40m - / -21 IQ4JO +6 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
152545 -24 1742  PY4ZO F4FSY RR73
151700 -17 2369  PY4ZO R3LCG KO64
153230 -23 1739  PY4ZO RN9N RR73
140715  -3 2646  PY4ZO F1PBZ -14 (x2)
185215 -20 1922  PY4ZO LZ2ZD KN23
185600  -6 2417  PY4ZO LZ2VO RR73
190600  -7 2671  PY4ZO PD0HLA -16 (x2)
125600 -15 2524  PY4ZO OZ5EEH JO55
165315 -15 2154  PY4ZO DK8EE JO41 (x3)
191500 -13 2420  PY4ZO UA6NT LN06 (x2)
40m 
UTC    dB Audio  Message
204900  +4 2893  PY4ZO IQ4JO JN63 (x2)
220700  -1 2934  PY4ZO F4BYA JN19
220700 -10  388  PY4ZO F1IQH JN27 (x2)
013100 -21 1376  PY4ZO RX3ASQ KO95 (x2)
60m 
UTC    dB Audio  Message
221730  +2  871  PY4ZO G4ZFJ JO01 (x2)
221830  +2  950  PY4ZO G6CUT IO90
221830  +0  871  PY4ZO G4ZFJ R-20 (x2)
222330  +2  950  PY4ZO G6CUT IO90 (x3)
222630  -4  740  PY4ZO CR7BRV IM58
222700  +4 1932  PY4ZO LA9GX JO59
222700  -6  741  PY4ZO CR7BRV RR73
222730  +0 1932  PY4ZO LA9GX JO59
230200  -6 1133  PY4ZO OR0A JO20 (x2)
230530  +2  640  PY4ZO MM0GOR RR73

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