GX4ABC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England Most frequent locator attributed to this token: IO81

Receiver-side FT8 activity involving GX4ABC, decoded by SO8OO in southeastern Poland. 98 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-09-01.

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 98 FT8 messages attributed to GX4ABC as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 80 m (29%) and 40 m (12%). Several six-hour UTC windows tied for the largest share (67%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

98
Messages attributed
5
UTC dates decoded
21
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 28 40m · 12 20m · 58
First attributed message: 2026-06-17
Last attributed message: 2026-09-01 18:28 UTC

Observed FT8 message patterns

Attributed sample
98 messages
Active dates
5 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-19 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 32, strong (≥ -8 dB) 40.

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 GX4ABC 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 GX4ABC

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
IO81 · 37 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,746 km (approx.)
Last such locator decoded
2026-09-01 18:28 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 UTCBandGX4ABC S/NCounterpartCounterpart S/NMsgsCapture
08-23 11:09 20m - / - SP6AXW +7 / - 6 Partial capture
08-23 11:07 20m -15 / -4 DL7ARV 0 / - 5 ✓ Closing observed
08-23 09:24 20m -3 / - DL7ARV +8 / +6 4 Partial capture
08-23 09:22 20m -4 / - UR5VPR -14 / -5 3 ✓ Closing observed
08-23 09:20 20m -5 / - VK6BAD - / - 2 Partial capture
08-23 09:15 20m -7 / - R3TAW -5 / +7 3 ✓ Closing observed
08-23 09:02 20m -6 / -9 UT7UJ -3 / -7 4 ✓ Full exchange observed
08-23 08:51 20m -5 / -13 DL3RAJ -9 / +1 17 Partial capture
08-22 20:18 40m - / - PI4TX -13 / - 3 Partial capture
08-22 19:35 80m -14 / -21 UA4FKT +12 / +9 5 ✓ Full exchange observed
08-22 19:33 80m -8 / -8 DO2SHX -2 / -5 4 ✓ Full exchange observed
08-22 19:32 80m -11 / -14 RO2X +9 / - 4 ✓ Closing observed
08-22 19:30 80m - / -14 DO2SHX +2 / - 2 Partial capture
08-22 19:28 80m - / - DO4TIM -9 / - 2 Partial capture
08-22 19:28 80m - / - DK3TNA -2 / - 3 Partial capture
08-22 19:28 80m - / +2 OH6LUW -2 / - 3 ✓ Closing fragment
08-22 19:24 80m -10 / - PE2JMR - / -8 2 ✓ Closing fragment
08-22 19:24 80m - / - OE3ZIO 0 / - 4 Partial capture
08-22 19:18 80m -15 / - F6BHK - / 0 2 ✓ Closing fragment
08-22 19:12 20m -3 / -15 LZ1WV +16 / +8 8 Partial capture
08-22 19:10 20m -3 / -19 9A4ZM +8 / +1 7 ✓ Full exchange observed
08-22 19:08 20m -4 / -9 G6MTI +5 / - 5 ✓ Closing observed
08-22 19:08 20m - / - EB3JT +2 / - 2 Partial capture
08-22 19:03 20m +3 / - BU2FW - / +3 5 ✓ Closing fragment
08-22 19:00 20m - / -18 EC3A -3 / - 2 Partial capture
08-22 18:59 20m 0 / - BG7BMG - / 0 2 ✓ Closing fragment
08-22 18:51 20m - / -18 IQ4JO +10 / - 3 ✓ Closing fragment
08-22 17:34 40m - / +2 DL5FCE -20 / - 2 ✓ Closing fragment
08-22 17:28 40m -18 / - PA3BMB - / - 2 Partial capture
08-22 17:25 40m - / - DL6CMF -4 / - 2 ✓ Closing fragment
08-22 17:24 40m - / - PE1NPS -3 / - 4 Partial capture
08-22 17:23 40m - / - S51PV -10 / - 5 Partial capture
08-22 17:20 40m -18 / +9 DJ0MAB -11 / - 5 ✓ Closing observed
08-22 17:18 40m -15 / -5 F1PBZ -7 / +4 5 ✓ Full exchange observed
08-22 17:18 40m -18 / - OZ5AGJ -20 / -5 4 ✓ Full exchange observed
08-22 09:49 20m -10 / - KP2B - / - 3 Partial capture
08-22 09:42 20m -10 / +5 DL7FE -11 / -4 7 ✓ Full exchange observed
08-22 09:40 20m -12 / +4 F1PBZ +10 / +9 4 ✓ Full exchange observed
08-22 09:37 20m -11 / -18 DL3MIB +10 / - 5 ✓ Closing observed
08-22 09:35 20m - / - SP6AXW -21 / - 2 Partial capture
08-22 09:33 20m -5 / +7 F5CUN -9 / +8 4 ✓ Full exchange observed
08-22 09:32 20m - / -11 OE7MAH -10 / - 3 ✓ Closing fragment
08-22 09:30 20m -12 / -18 DL1BGH -8 / -5 3 Partial capture
08-22 09:26 20m -10 / -15 EA1IOK -13 / -13 5 ✓ Full exchange observed
08-22 09:23 20m -12 / - EA3CY -17 / - 3 ✓ Closing observed
07-29 19:47 20m - / -15 EA8UP -6 / - 3 ✓ Closing fragment
06-24 20:18 80m -17 / -15 SQ8NGI +4 / -19 16 ✓ Full exchange observed
06-24 20:17 80m -17 / - RA3ZDU - / - 3 Partial capture
06-24 20:12 80m -16 / - E70SZ +12 / -3 7 Partial capture
06-24 19:58 80m - / -8 DL2VAH -7 / - 7 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
172815 -20 1928  CQ GX4ABC IO81
172845 -18 1928  PA3BMB GX4ABC +15
172900 -10 1927  GX4ABC RK4F LO23
172915 -19 1928  PA3BMB GX4ABC +15
172945 -19 1928  SP7TF GX4ABC R+01
173430 -24 1737  GX4ABC DL5FCE R+02 (x2)
173800  -8 1379  GX4ABC GB64MOD R-01
174545 -19 1660  GX4ABC DL9PWH JN67
174700 -16 1660  SP7TF GX4ABC 73
174730 -14 1659  F4LJG GX4ABC -12
201830 -12 2039  GX4ABC PI4TX JO22 (x3)
182800 -17 1703  CQ GX4ABC IO81
20m 
UTC    dB Audio  Message
092400 +14 1251  GX4ABC DL7ARV JO62 (x2)
092445  -5 1250  DL7ARV GX4ABC +06 (x2)
110730  -1 1840  GX4ABC DL7ARV JO62 (x3)
110845 -15 1840  DL7ARV GX4ABC RR73
110900  +8 2427  GX4ABC SP6AXW JO80
110900  +2 1840  GX4ABC DL7ARV 73
110930  +4 2427  GX4ABC SP6AXW JO80 (x5)
80m 
UTC    dB Audio  Message
193100  +5 2919  GX4ABC DO2SHX -14
193230  +9 2437  GX4ABC RO2X KO74 (x2)
193315 -11 1282  RO2X GX4ABC RR73
193330 +12 2437  GX4ABC RO2X 73
193330  +2 2919  GX4ABC DO2SHX -08
193415 -13 1282  DO2SHX GX4ABC R-05
193430  -5 2918  GX4ABC DO2SHX RR73
193445  -4 1282  DO2SHX GX4ABC 73
193500 +10 1282  GX4ABC UA4FKT LO23
193515 -16 1282  UA4FKT GX4ABC +09
193530 +12 1282  GX4ABC UA4FKT R-21
193545 -12 1281  UA4FKT GX4ABC RR73
193600 +15 1281  GX4ABC UA4FKT 73
194445  -4  954  GX4ABC UA4FET LO13

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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