W4MAA — 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: EM84

Receiver-side FT8 activity involving W4MAA, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-09-22.

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 24 FT8 messages attributed to W4MAA as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (96%), followed by 40 m (4%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

24
Messages attributed
3
UTC dates decoded
9
Active 15-min windows
-16 dB
Estimated median S/N

Bands

40m · 1 20m · 23
First attributed message: 2026-06-16
Last attributed message: 2026-09-22 03:55 UTC

Observed FT8 message patterns

Attributed sample
24 messages
Active dates
3 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-22 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 7, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with W4MAA 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 W4MAA

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
EM84 · 14 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,079 km (approx.)
Last such locator decoded
2026-09-22 03:55 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 UTCBandW4MAA S/NCounterpartCounterpart S/NMsgsCapture
10-21 05:36 40m - / -14 I0KJX -6 / - 2 ✓ Closing fragment
10-21 04:37 40m - / -10 CT7BRV -6 / - 2 ✓ Closing fragment
10-20 07:29 40m - / - GU0SUP -2 / - 2 Partial capture
10-18 06:26 40m - / - DL2MED -6 / - 2 Partial capture
10-18 04:32 40m - / -9 CT2GQA -11 / - 4 ✓ Closing fragment
10-18 02:19 40m - / - CT2GQA -8 / - 4 Partial capture
10-18 01:32 40m - / - CT2GQA +1 / - 5 Partial capture
10-18 01:12 40m - / - CT2GQA -12 / - 5 Partial capture
10-15 05:00 40m - / -18 SV5BYP -16 / - 2 Partial capture
10-15 04:37 40m - / - CT2GQA -8 / - 2 Partial capture
10-15 00:41 40m - / - F4HKP -4 / - 5 Partial capture
10-14 06:14 40m - / -10 EA1DLU -10 / - 2 ✓ Closing fragment
10-14 05:16 40m - / -18 IN3KSO -6 / - 3 ✓ Closing fragment
10-12 06:31 40m - / -20 ON8DM +1 / - 3 ✓ Closing fragment
10-07 06:37 40m - / -18 F4FQY -6 / - 2 ✓ Closing fragment
10-07 05:08 40m - / -17 IU0TPA +4 / - 6 ✓ Closing fragment
10-02 06:38 40m - / -15 DM5KM +2 / - 2 ✓ Closing fragment
10-02 05:58 40m - / -18 PA3T +4 / - 3 ✓ Closing fragment
10-02 05:38 40m - / - PD1AC -8 / - 2 Partial capture
10-02 05:30 40m - / -22 DK8IZ +6 / - 5 ✓ Closing fragment
10-02 05:28 40m - / -13 DL4KG -14 / - 2 ✓ Closing fragment
10-02 05:20 40m - / -15 DK6WH +3 / - 8 Partial capture
10-01 04:11 40m - / - IN3IZQ -14 / - 2 Partial capture
10-01 03:36 40m - / -19 IW2ODG -6 / - 2 ✓ Closing fragment
10-01 01:16 40m - / -10 F4EGM +7 / - 4 Partial capture
09-30 22:32 40m - / - LB7ZG +3 / - 2 Partial capture
09-30 22:26 40m - / - LB7ZG +10 / - 2 Partial capture
09-30 22:00 40m - / -19 AO70URV -16 / - 2 Partial capture
09-28 04:54 80m - / - F4FPR -9 / - 3 Partial capture
09-25 05:08 40m - / -19 IW0RLC -4 / - 4 Partial capture
09-25 04:59 40m - / -20 HB9IOB -14 / - 4 ✓ Closing fragment
09-25 04:59 40m - / -19 IW0RLC -10 / - 14 Partial capture
09-23 07:00 40m - / -16 F4LHL -8 / - 2 ✓ Closing fragment
09-23 06:58 40m - / -19 DK1AJ +8 / - 2 Partial capture
09-23 06:52 40m - / - DK1AJ -11 / - 3 Partial capture
09-23 04:55 40m - / -13 EA3JEY -2 / - 2 ✓ Closing fragment
09-23 04:45 40m - / -20 9A3AUH +8 / - 4 ✓ Closing fragment
09-23 04:43 40m - / -12 HB9IBA -4 / - 4 ✓ Closing fragment
09-23 04:28 40m - / -19 IK2PZX -5 / - 3 ✓ Closing fragment
09-23 03:14 40m - / - RO3R +4 / - 2 Partial capture
09-23 01:24 40m - / -7 W9WN -7 / - 2 ✓ Closing fragment
09-22 23:38 40m - / - TA3NK -11 / - 3 Partial capture
09-22 23:05 40m - / - IW0RGU -2 / - 2 Partial capture
09-22 22:58 40m - / -19 IU0NAD +2 / - 2 ✓ Closing fragment
09-22 08:03 40m - / -12 G6ZRV -13 / - 3 ✓ Closing fragment
09-22 07:30 40m - / -3 F1PBZ -8 / - 2 Partial capture
09-22 06:56 40m - / - DJ2CR -5 / - 7 Partial capture
09-22 05:17 40m - / -18 DL1GLO +8 / - 4 ✓ Closing fragment
09-22 05:02 40m - / - IN3WZS +2 / - 6 Partial capture
09-22 04:55 40m - / - DL9ATW +8 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
043400 -13 2570  W4MAA CT2GQA 73
043915  -8 1790  W4MAA DL8TT JO30
060515  +2 2515  W4MAA GJ0KYZ +09
060545  -6 2876  W4MAA 9A5AR -22
062230  -1 2562  W4MAA DK8HM JN39
062645  -5 2163  W4MAA DL2MED JO40 (x2)
043830 -12 1496  W4MAA ES5NC RR73
072900  -4 2893  W4MAA GU0SUP IN89 (x2)
043745  -5  756  W4MAA CT7BRV -10 (x2)
053600  -5  670  W4MAA I0KJX R-14 (x2)
060615  -6 1102  W4MAA DJ6EA JN48
80m 
UTC    dB Audio  Message
005530 -16  317  W4MAA N1TQP -11 (x2)
022015 -13 2137  W4MAA NA3M FM19
031630 -19 2608  W4MAA XE2X RR73
033830 -17  997  W4MAA W4Q -04
042400  +4 1385  W4MAA ON8DM JO10
045430  -7 1512  W4MAA F4FPR IN88 (x3)
043815  -9  486  W4MAA KY2J R-05
20m 
UTC    dB Audio  Message
201415  -7 1073  W4MAA F6EKI 73
013900  -9  518  W4MAA TJ1GD R-13 (x2)
071815  +1 2494  W4MAA OE9KFV JN47 (x6)
073215  -6  939  W4MAA DL9KV JO31 (x4)
073515  -9  797  W4MAA MW3FLI RR73
073745 -18  939  W4MAA DL9KV JO31
10m 
UTC    dB Audio  Message
174445 -15  996  W4MAA LU5FF R-09

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee