K4GRI — 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: EL88

Receiver-side FT8 activity involving K4GRI, decoded by SO8OO in southeastern Poland. 311 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-10-06.

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 311 FT8 messages attributed to K4GRI 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 (47%), followed by 80 m (43%) and 20 m (10%). Most decodes (93%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (64%); the estimated median was -12 dB.

Overview

311
Messages attributed
7
UTC dates decoded
43
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 133 40m · 146 20m · 32
First attributed message: 2026-08-30
Last attributed message: 2026-10-06 02:13 UTC

Observed FT8 message patterns

Attributed sample
311 messages
Active dates
7 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-19 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 82, moderate (-15 to -9 dB) 200, strong (≥ -8 dB) 29.

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 K4GRI 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 K4GRI

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
EL88 · 156 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,589 km (approx.)
Last such locator decoded
2026-10-06 01:54 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 UTCBandK4GRI S/NCounterpartCounterpart S/NMsgsCapture
10-04 03:16 80m - / -12 YO8RAW +9 / - 3 Partial capture
10-04 03:14 80m - / -14 DO1ID +17 / - 7 Partial capture
10-04 03:13 80m -17 / - WB5BI - / - 5 Partial capture
10-04 03:08 80m - / - DO4DXA +10 / - 4 Partial capture
10-04 03:07 80m - / -13 DO1ID +17 / - 3 Partial capture
10-04 03:06 80m -16 / - N4QEP - / +5 2 Partial capture
10-04 03:05 80m -15 / - KO4JJU - / -24 3 Partial capture
10-04 03:03 80m -11 / - N4QEP - / - 2 Partial capture
10-04 03:02 80m - / -15 DO1ID +17 / - 3 Partial capture
10-04 03:02 80m - / -20 SP5MXZ +10 / - 12 Partial capture
10-04 03:01 80m -12 / - KD0XD - / -24 3 ✓ Closing fragment
10-04 02:58 80m - / - LY2EW +4 / - 2 Partial capture
10-04 02:58 80m - / - R5BS -6 / - 2 Partial capture
10-04 02:57 80m - / -10 DO1ID 0 / - 2 Partial capture
10-04 02:47 40m -12 / - KD3BLX - / -12 2 Partial capture
10-04 02:39 40m - / - UA3GDJ +6 / - 2 Partial capture
10-04 02:37 40m -13 / - N3F - / - 2 Partial capture
10-04 01:09 40m - / - RV0AR -2 / - 3 Partial capture
10-04 01:08 40m - / -12 3Z4DX -10 / - 5 Partial capture
10-04 01:01 40m -11 / - KG6PH - / -9 3 Partial capture
10-04 01:00 40m -11 / - N4R - / - 2 Partial capture
10-04 00:57 40m -12 / - KU4HO - / - 5 Partial capture
10-04 00:55 40m -10 / - N4R - / - 3 Partial capture
10-04 00:53 40m -10 / - W2NYU - / 0 3 ✓ Closing fragment
10-04 00:52 40m -10 / - K8RKZ - / - 2 Partial capture
10-04 00:50 40m -9 / - KA7DOG - / - 3 Partial capture
10-04 00:48 40m -16 / - K8ELS - / -19 4 ✓ Closing fragment
10-04 00:46 40m -16 / - N4TQ - / +7 2 ✓ Closing fragment
10-04 00:46 40m - / - TA2EE -15 / - 3 Partial capture
10-04 00:44 40m -14 / - N4ZSA - / -4 2 ✓ Closing fragment
10-04 00:42 40m - / - RV0AR -6 / - 3 Partial capture
10-04 00:42 40m - / - TA2EE -12 / - 2 Partial capture
10-04 00:39 40m -9 / - KO3F - / -14 3 ✓ Closing fragment
10-04 00:37 40m -11 / - W5RBD - / -4 7 ✓ Closing fragment
10-04 00:35 40m -9 / - W5COE - / +8 3 ✓ Closing fragment
10-04 00:31 40m -13 / - W4PPC - / 0 4 ✓ Closing fragment
10-04 00:30 40m -10 / - P41MTO - / - 2 Partial capture
10-04 00:23 40m -10 / - N4SSD - / - 3 Partial capture
10-04 00:21 40m -10 / - KG5PNN - / -3 2 ✓ Closing fragment
10-04 00:20 40m -10 / - NB5G - / -8 4 ✓ Closing fragment
10-04 00:19 40m -9 / - IU8RFW - / -20 2 Partial capture
10-04 00:16 40m -9 / - LU2FWK - / -13 4 Partial capture
10-04 00:16 40m - / -4 7Z1IS -11 / - 5 Partial capture
10-04 00:12 40m -10 / - WE9G - / -16 2 ✓ Closing fragment
10-04 00:11 40m -10 / -4 7Z1IS -11 / - 5 Partial capture
10-04 00:08 80m - / -17 DK9WI +6 / - 3 Partial capture
10-04 00:06 80m -14 / - KD0XD - / -22 3 Partial capture
10-04 00:04 80m - / - UX5UO +22 / - 2 Partial capture
10-02 03:17 80m -12 / - WX4SGA - / +4 2 ✓ Closing fragment
10-02 03:13 80m - / - RK6C +6 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
011000  -2 1154  K4GRI RV0AR NO66
011000  -9  598  K4GRI 3Z4DX -15 (x2)
011545 -12  790  W3FIZ K4GRI R+02
023530 -15  791  KC9YTT K4GRI EL88
023700 -12  791  N3F K4GRI EL88 (x2)
023900 -13  790  K3TEF K4GRI R+06
023945  +5  791  K4GRI UA3GDJ KO92 (x2)
024300 -12  791  KD3BLX K4GRI EL88 (x3)
015400 -16  791  KC9RAX K4GRI EL88
021345 -14  791  KF0QIS K4GRI 73
80m 
UTC    dB Audio  Message
031330 -15  758  WB5BI K4GRI EL88 (x2)
031415 +19  382  K4GRI DO1ID -14
031430 -19  758  WB5BI K4GRI EL88
031445 +19  382  K4GRI DO1ID -14 (x3)
031600 -16  758  WB5BI K4GRI EL88
031615 +15  382  K4GRI DO1ID -14
031630 -19  758  WB5BI K4GRI EL88
031645  +8  768  K4GRI YO8RAW -12
031645 +13  382  K4GRI DO1ID -14 (x2)
031745  +8  702  K4GRI YO8RAW -15 (x2)
160m 
UTC    dB Audio  Message
022930 +10  270  K4GRI SV8JE KM08 (x4)
20m 
UTC    dB Audio  Message
220700 -20 1822  KE9DMW K4GRI EL88
220730 -18 1822  OK2CNI K4GRI EL88
220745 -10 2400  K4GRI OK2CNI -03
220800 -19 1822  OK2CNI K4GRI R-06
220815 -11 2400  K4GRI OK2CNI RR73
220830 -18 1822  OK2CNI K4GRI 73
220930 -20 1822  W0OVX K4GRI EL88 (x2)
221030 -19 1822  N8PFK K4GRI -08 (x3)
221400 -21 1821  EA8BYO K4GRI EL88
221615  -7  364  K4GRI KF9UG EN71 (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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