W4WHQ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving W4WHQ, decoded by SO8OO in southeastern Poland. 73 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-09-16.

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 73 FT8 messages attributed to W4WHQ as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 80 m (42%) and 20 m (7%). 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 (86%); the estimated median was -19 dB.

Overview

73
Messages attributed
7
UTC dates decoded
16
Active 15-min windows
-19 dB
Estimated median S/N

Bands

First attributed message: 2026-06-19
Last attributed message: 2026-09-16 02:50 UTC

Observed FT8 message patterns

Attributed sample
73 messages
Active dates
7 UTC dates
Estimated median S/N
-19 dB
Estimated 10th-90th percentile
-24 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 63, moderate (-15 to -9 dB) 10, 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 W4WHQ

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 · 26 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,876 km (approx.)
Last such locator decoded
2026-09-08 02:57 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 UTCBandW4WHQ S/NCounterpartCounterpart S/NMsgsCapture
09-16 03:08 40m - / -10 ON4XM -2 / - 2 Partial capture
09-16 03:08 40m - / -12 ON3CL -16 / - 6 Partial capture
09-16 02:59 80m - / - OM1DMT +20 / - 3 Partial capture
09-16 02:44 80m - / - 9A5TW +2 / - 2 Partial capture
09-16 02:44 80m -19 / - N6KD - / - 11 Partial capture
09-16 02:31 80m -22 / - KJ5GNR - / -17 5 Partial capture
09-16 02:22 80m -18 / -4 HB9CXZ +2 / - 9 ✓ Closing observed
09-16 02:20 80m - / - 9A5E +7 / - 3 Partial capture
09-16 02:17 80m -20 / - KD2WBX - / - 2 Partial capture
09-16 01:45 80m - / +8 F1PBZ +8 / - 7 Partial capture
09-14 02:16 80m - / -1 OK2SFP +17 / - 4 ✓ Closing fragment
09-14 02:09 80m - / -16 PI4DX +16 / - 2 ✓ Closing fragment
09-14 02:05 80m - / -16 PI4DX +15 / - 2 ✓ Closing fragment
09-14 01:59 80m - / -25 PI4DX +8 / - 2 ✓ Closing fragment
09-14 01:55 80m - / -16 PI4DX +6 / - 4 ✓ Closing fragment
09-14 01:44 80m - / - EA4DZR -20 / - 2 Partial capture
09-14 01:41 80m - / -23 DK7ZT +9 / - 5 Partial capture
09-14 01:39 80m - / +7 VE3XN -23 / - 3 ✓ Closing fragment
09-14 01:23 80m - / -20 DK7ZT +5 / - 5 Partial capture
09-14 01:15 80m - / -12 F1PBZ +8 / - 8 Partial capture
09-14 01:14 80m - / -20 IU2QDY -7 / - 3 Partial capture
09-14 01:11 80m - / - YO9IJP +10 / - 4 Partial capture
09-14 01:10 80m - / - F5NNN -7 / - 6 Partial capture
09-14 01:06 80m - / -23 DK7ZT +11 / - 5 Partial capture
09-14 01:00 80m - / -20 SV8JE +19 / - 8 ✓ Closing fragment
09-13 02:25 80m - / -16 HK4EIC -18 / - 2 Partial capture
09-08 03:15 80m - / -18 DK7ZT -2 / - 4 Partial capture
09-08 03:15 80m - / -17 YO4NF -2 / - 2 Partial capture
09-08 03:15 80m - / - 9A5E +3 / - 3 Partial capture
09-08 03:00 40m - / - UR5LAK -4 / - 4 Partial capture
09-08 02:58 40m -18 / - WA2HMM - / - 2 Partial capture
09-08 02:57 40m - / - IW2MYH -8 / - 4 Partial capture
09-08 02:48 40m - / - UT5ZC -9 / - 3 Partial capture
09-08 02:37 40m - / -11 SV2KD -19 / - 2 Partial capture
09-08 02:19 40m - / -17 RZ6AKF -16 / - 3 Partial capture
09-08 02:17 80m - / - YO6LM +2 / - 2 Partial capture
09-08 02:16 80m - / - SP7IIT +7 / - 3 Partial capture
09-08 02:16 80m - / -14 YO4NF +10 / - 3 Partial capture
09-08 02:15 80m - / - DO5HOK +2 / - 16 Partial capture
09-08 02:15 80m - / - RA2FCF +5 / - 3 Partial capture
09-08 02:15 80m - / - IQ4JO +4 / - 3 Partial capture
09-08 02:04 80m - / - 9A5E +8 / - 2 Partial capture
09-08 02:02 80m - / - DO5HOK +4 / - 2 Partial capture
09-08 02:00 80m - / - OH5LF +8 / - 2 Partial capture
09-08 01:58 80m - / -14 ON1JP -17 / - 5 Partial capture
09-08 01:58 80m - / - US2YW +5 / - 3 Partial capture
09-08 01:58 80m - / - 9A5E +5 / - 3 Partial capture
09-08 01:58 80m - / - DO5HOK -4 / - 2 Partial capture
09-08 01:56 80m - / -21 DK7ZT +2 / - 5 Partial capture
09-08 01:56 80m -24 / -19 HA7TM +8 / - 5 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
025815  -9  393  W4WHQ IW2MYH JN45
025830 -16 1070  WA2HMM W4WHQ RRR
025845  -3  393  W4WHQ IW2MYH JN45
030045  -3 1071  W4WHQ UR5LAK KN89 (x4)
030815 -18 1176  W4WHQ ON3CL -12
030845  +2 2937  W4WHQ ON4XM -10
030845 -19 1176  W4WHQ ON3CL -12
030915  -5 2937  W4WHQ ON4XM -12
030945 -18 1175  W4WHQ ON3CL -12 (x4)
80m
UTC    dB Audio  Message
024430 -20  741  N6KD W4WHQ RRR
024445  +1 2814  W4WHQ 9A5TW JN83
024500 -19  742  N6KD W4WHQ RRR
024515  +4 2814  W4WHQ 9A5TW JN83
024600 -21  742  N6KD W4WHQ RRR (x8)
025945 +21 2812  W4WHQ OM1DMT JN88 (x3)
20m
UTC    dB Audio  Message
024915 -23 1714  W4WHQ RN6MA -17
025745 -19 2199  W4WHQ 4X5MZ -15
001245 -12 1325  W4WHQ RN6MA -16 (x3)
001345  -7 2635  W4WHQ F1PBZ -09
211845 -16 1345  W4WHQ UW8SM KN28
211915  -1  463  W4WHQ IK4LZH JN54
211945 -21 1346  W4WHQ UW8SM KN28
211945  -4  463  W4WHQ IK4LZH JN54 (x3)
020145  -8 2607  W4WHQ OK2CNI JN79 (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.

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