N4GBK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM16

Receiver-side FT8 activity involving N4GBK, decoded by SO8OO in southeastern Poland. 86 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-09-20.

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 86 FT8 messages attributed to N4GBK as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 20 m (40%) and 80 m (3%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

86
Messages attributed
9
UTC dates decoded
14
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 3 40m · 49 20m · 34
First attributed message: 2026-06-16
Last attributed message: 2026-09-20 01:09 UTC

Observed FT8 message patterns

Attributed sample
86 messages
Active dates
9 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-21 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 34.

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 N4GBK 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 N4GBK

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
FM16 · 40 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,551 km (approx.)
Last such locator decoded
2026-09-15 01:39 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 UTCBandN4GBK S/NCounterpartCounterpart S/NMsgsCapture
09-20 01:12 40m - / -15 F5NBU +10 / - 4 ✓ Closing fragment
09-20 01:07 40m -14 / - UW8SM - / -13 3 Partial capture
09-20 01:07 40m -16 / - MI0NWA -13 / -14 3 Partial capture
09-20 01:04 40m - / - IU1MIH -10 / - 4 Partial capture
09-15 01:40 40m -11 / - R5DT +2 / -1 4 Partial capture
09-15 01:35 40m -12 / - W6M - / - 6 Partial capture
09-15 01:34 40m -12 / - W1AW/0 - / -7 2 Partial capture
09-15 01:27 40m -13 / - W6P - / -4 7 ✓ Closing fragment
09-15 01:23 40m -14 / - W6M - / - 3 Partial capture
09-10 00:37 80m - / - M0PEL -16 / - 2 Partial capture
09-06 01:26 40m - / -15 US7KC -22 / - 3 ✓ Closing fragment
09-06 01:24 40m - / +2 PA0KGB +4 / - 3 ✓ Closing fragment
09-06 01:22 40m - / -15 OO0O -5 / - 3 ✓ Closing fragment
09-06 01:13 40m - / -16 RL3T +3 / - 5 Partial capture
09-06 01:10 40m - / -8 ON1DGN -16 / - 4 Partial capture
09-06 01:04 40m - / - RD7O +8 / - 2 Partial capture
09-06 00:49 80m - / -16 TF3VS +4 / - 6 ✓ Closing fragment
09-06 00:44 80m - / - LA1QRO +6 / - 2 Partial capture
09-02 00:14 60m - / -11 DK7ZT -15 / - 3 Partial capture
09-02 00:14 60m - / -22 OM5JG -14 / - 5 ✓ Closing fragment
09-02 00:08 60m - / -15 OK8WIT +2 / - 2 ✓ Closing fragment
09-02 00:00 60m - / -17 DL1UDO -9 / - 3 ✓ Closing fragment
09-01 23:56 60m - / -24 G0AZH -6 / - 4 ✓ Closing fragment
09-01 23:52 40m -22 / - SP5LST - / -18 2 ✓ Closing fragment
09-01 00:51 40m -22 / - KO4LRC - / 0 2 ✓ Closing fragment
08-28 03:08 40m -18 / - RI1FJL - / - 3 Partial capture
08-26 02:42 80m - / -19 OH1MLZ +21 / - 2 Partial capture
08-18 03:42 60m - / -15 SV2HTI 0 / - 5 ✓ Closing fragment
08-18 03:41 60m - / -9 EB1LA 0 / - 3 ✓ Closing fragment
08-18 03:35 60m - / - G0AZH -6 / - 7 Partial capture
08-18 03:33 60m - / -12 F5RRS +6 / - 3 ✓ Closing fragment
08-18 03:30 60m - / -16 DK7ZT -15 / - 3 Partial capture
08-18 03:30 60m - / - F5RAV -5 / - 3 Partial capture
08-18 03:30 60m - / - DL1LCK -4 / - 2 Partial capture
08-18 03:29 60m - / -17 HA7TM -14 / - 5 ✓ Closing fragment
08-15 00:55 80m - / - SP9TBT +14 / - 5 Partial capture
08-15 00:55 80m - / -24 OH2BVT +3 / - 3 Partial capture
08-15 00:45 80m - / -22 G0OYQ -8 / - 3 ✓ Closing fragment
08-15 00:45 80m - / - DO5PY +3 / - 3 Partial capture
08-15 00:44 80m - / +9 KD2ZZA -24 / - 2 ✓ Closing fragment
08-04 01:59 40m - / -16 RN6HK -10 / - 3 ✓ Closing fragment
08-02 02:10 80m - / - A71XX -20 / - 2 Partial capture
08-02 02:08 80m - / -15 <...> 0 / - 2 Partial capture
08-01 01:36 40m - / -16 M0IQW -15 / - 2 ✓ Closing fragment
08-01 01:33 40m - / - M0IQW -9 / - 3 Partial capture
08-01 01:22 40m - / - DL1UDO -10 / - 3 Partial capture
08-01 01:02 40m - / -1 DK1AD +1 / - 3 ✓ Closing fragment
08-01 01:01 40m - / - DK4ET -12 / - 2 Partial capture
06-24 03:08 80m - / -16 DK2EU +4 / - 4 ✓ Closing fragment
06-24 03:06 80m - / -25 OK2IT +14 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
010430  -7 1446  N4GBK IU1MIH JN44 (x4)
010645 -13 1447  N8ZYA N4GBK RR73
010700 -13  812  N4GBK MI0NWA IO64
010715 -16 1447  UW8SM N4GBK -13 (x3)
010845 -15 1447  MI0NWA N4GBK -14 (x2)
011215  +9 1447  N4GBK F5NBU JN28 (x4)
80m 
UTC    dB Audio  Message
005745 +12 1912  N4GBK SP9TBT JO90
024215 +18 2508  N4GBK OH1MLZ -19 (x2)
003200  +2 2006  N4GBK TF3VS HP94 (x2)
004400  +4 1407  N4GBK LA1QRO JP40 (x2)
004915  +1 2007  N4GBK TF3VS HP94 (x6)
003745 -16 1508  N4GBK M0PEL JO01 (x2)
60m 
UTC    dB Audio  Message
235715  -6  730  N4GBK G0AZH R-24 (x2)
000045 -10 1528  N4GBK DL1UDO JO31 (x3)
000815  +2 2184  N4GBK OK8WIT -15 (x2)
001445 -13 1204  N4GBK OM5JG JN98
001445 -16 1901  N4GBK DK7ZT -11
001515 -15 1204  N4GBK OM5JG R-22
001515 -17 1901  N4GBK DK7ZT -11
001545 -14 1203  N4GBK OM5JG R-22
001545 -13 1901  N4GBK DK7ZT -11
001645 -14 1202  N4GBK OM5JG R-22 (x2)

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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