WA4YIZ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM95

Receiver-side FT8 activity involving WA4YIZ, decoded by SO8OO in southeastern Poland. 89 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-10-25.

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 89 FT8 messages attributed to WA4YIZ as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (96%), followed by 80 m (3%) and 20 m (1%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (92%); the estimated median was -20 dB.

Overview

89
Messages attributed
11
UTC dates decoded
22
Active 15-min windows
-20 dB
Estimated median S/N

Bands

First attributed message: 2026-08-21
Last attributed message: 2026-10-25 02:54 UTC

Observed FT8 message patterns

Attributed sample
89 messages
Active dates
11 UTC dates
Estimated median S/N
-20 dB
Estimated 10th-90th percentile
-24 to -16 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 82, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 0.

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.

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 WA4YIZ

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
EM95 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,876 km (approx.)
Last such locator decoded
2026-10-17 02:50 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 UTCBandWA4YIZ S/NCounterpartCounterpart S/NMsgsCapture
11-02 04:34 40m - / -6 SV1DKR -3 / - 2 ✓ Closing fragment
10-25 02:58 80m - / - IK5CHL +4 / - 3 Partial capture
10-25 02:51 80m - / - HB9ALO +3 / - 3 Partial capture
10-25 02:50 80m - / -20 F4EGM +5 / - 6 Partial capture
10-25 02:46 80m - / +10 NM1G -12 / - 3 ✓ Closing fragment
10-25 02:45 80m - / -15 SP1MGM +7 / - 4 Partial capture
10-25 02:35 80m - / -13 EA3HMM +6 / - 3 ✓ Closing fragment
10-02 23:31 40m - / -18 LA6VQ -3 / - 2 ✓ Closing fragment
10-02 00:58 40m - / - RA4FUT -14 / - 2 Partial capture
10-02 00:35 40m -16 / - RA3WY - / -19 2 Partial capture
10-02 00:34 40m -18 / - KG9OH - / +3 2 Partial capture
10-02 00:29 40m -19 / - K3UCQ - / -10 2 ✓ Closing fragment
10-02 00:27 40m - / - UB3KGW -6 / - 2 Partial capture
10-02 00:26 40m -18 / - KI4KI - / - 2 ✓ Closing fragment
10-02 00:26 40m -18 / +6 G3TKT -7 / -14 6 ✓ Full exchange observed
10-02 00:19 40m -18 / - WB8SCG - / -2 2 ✓ Closing fragment
10-02 00:19 40m -20 / -5 F5OZK -4 / -4 12 ✓ Full exchange observed
10-02 00:15 40m - / - EI3CTB -8 / - 2 Partial capture
10-02 00:15 40m -17 / -15 RN6HK -3 / - 7 ✓ Closing observed
10-02 00:15 40m - / - UB3KGW -6 / - 2 Partial capture
10-02 00:14 40m - / - IU8RFW -1 / - 6 Partial capture
10-02 00:13 40m - / - HB9ZHK -12 / - 2 Partial capture
10-02 00:11 40m - / - R3SN -10 / - 4 Partial capture
10-02 00:09 40m - / - F5OZK 0 / - 3 Partial capture
10-02 00:09 40m - / - IW2MYH +4 / - 4 Partial capture
10-02 00:06 40m - / -16 PD1HBL -14 / - 5 ✓ Closing fragment
10-02 00:04 40m - / - F5OZK -5 / - 3 Partial capture
09-29 03:07 40m - / - TA2EE -13 / - 4 Partial capture
09-28 03:18 80m - / - HB9ALO -2 / - 2 Partial capture
09-28 03:17 80m - / +7 GM6URC -4 / - 4 Partial capture
09-28 03:17 80m - / - IK8OAM -1 / - 2 Partial capture
09-28 03:13 80m - / -14 GM6URC -1 / - 3 Partial capture
09-21 23:34 40m - / - PA3DZM -14 / - 5 Partial capture
09-21 23:32 40m - / - RN6HK +2 / - 2 Partial capture
09-21 23:30 40m -20 / - K8SJM - / - 4 ✓ Closing fragment
09-21 23:26 40m - / -9 CT2HEX -8 / - 2 Partial capture
09-21 23:22 40m - / 0 VE3CM +2 / - 2 ✓ Closing fragment
09-21 23:15 40m -19 / -20 RD3FY +11 / -25 7 ✓ Full exchange observed
09-21 23:08 40m - / - G7LHK -2 / - 7 Partial capture
09-21 23:08 40m - / - PI4TX +2 / - 2 Partial capture
09-20 06:32 40m - / -18 PD0WL -12 / - 6 Partial capture
09-20 06:24 40m - / -18 PD0WL -7 / - 5 Partial capture
09-19 03:59 40m - / -10 CT2HEX -9 / - 2 Partial capture
09-19 03:54 40m - / -18 CT2HEX -10 / - 6 Partial capture
09-19 03:54 40m - / -12 F4HXJ +1 / - 5 ✓ Closing fragment
09-19 03:50 40m - / - F4HXJ -6 / - 2 Partial capture
09-08 02:26 40m - / -1 S52UF -14 / - 4 Partial capture
09-04 00:28 40m - / -10 ON1DGN -15 / - 3 Partial capture
09-03 02:43 40m -22 / - W6CKC - / - 3 Partial capture
09-03 02:41 40m -21 / - W4GIV - / -15 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
003530 -16 2053  RA3WY WA4YIZ -19
003800 -13 2053  I4DOR WA4YIZ RR73
003930 -21 2052  WO8H WA4YIZ RR73
005845 -13 1863  WA4YIZ RA4FUT LO23 (x2)
010615 -15 2449  8Q7PR WA4YIZ 73
010730 -15 2450  CQ WA4YIZ EM95
010830 -16 2449  N3JWJ WA4YIZ -13
010930 -15 2449  KA9VRX WA4YIZ +09
232230 -15 2366  UT9NA WA4YIZ R-09
233145  -6 2186  WA4YIZ LA6VQ -18 (x2)
032330  -3 3004  WA4YIZ EA7R -12
043415  -6 1835  WA4YIZ SV1DKR -06 (x2)
80m
UTC    dB Audio  Message
024715  -9  645  WA4YIZ NM1G +10 (x2)
025015  +4 1666  WA4YIZ F4EGM JN29 (x2)
025145  +5 1203  WA4YIZ HB9ALO JN45
025145  +5 1341  WA4YIZ F4EGM JN29
025215  +1 1203  WA4YIZ HB9ALO JN45
025215  +5 1341  WA4YIZ F4EGM R-20
025245  +4 1203  WA4YIZ HB9ALO JN45
025245  +3 1340  WA4YIZ F4EGM R-20 (x2)
025400 -24 1574  KJ5GNR WA4YIZ -08
025815  +4 2108  WA4YIZ IK5CHL JN53 (x3)
20m
UTC    dB Audio  Message
005830  -9 2785  WA4YIZ HG0NPJ -15
233845 -16 2258  WA4YIZ KJ1R 73
234000 -20 2257  VE4ZIM WA4YIZ R-25
234215  +6 2134  WA4YIZ IQ4JO JN63
000500 -10 1994  WA4YIZ 8Q7PR -08 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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