JE3GRQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM75

Receiver-side FT8 activity involving JE3GRQ, decoded by SO8OO in southeastern Poland. 40 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-06.

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 40 FT8 messages attributed to JE3GRQ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (70%), followed by 40 m (25%) and 80 m (5%). 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 -16 dB.

Overview

40
Messages attributed
4
UTC dates decoded
9
Active 15-min windows
-16 dB
Estimated median S/N

Bands

80m · 2 40m · 10 20m · 28
First attributed message: 2026-06-06
Last attributed message: 2026-09-06 21:16 UTC

Observed FT8 message patterns

Attributed sample
40 messages
Active dates
4 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-21 to -2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 9.

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 JE3GRQ in decoded directed-looking exchanges:

Most frequent locator attributed to JE3GRQ

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
PM75 · 26 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,477 km (approx.)
Last such locator decoded
2026-09-06 21:16 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 UTCBandJE3GRQ S/NCounterpartCounterpart S/NMsgsCapture
09-08 19:48 80m - / - R3DLK -6 / - 7 Partial capture
09-08 19:47 80m - / -9 SM5KNV +10 / - 2 Partial capture
09-08 19:17 80m - / - UX1AA +2 / - 3 Partial capture
09-08 19:16 80m - / -24 Z62NS +12 / - 4 ✓ Closing fragment
09-06 21:19 40m - / -15 R3MAR -7 / - 3 Partial capture
09-06 21:18 40m - / -9 R8CKD -7 / - 3 ✓ Closing fragment
09-06 21:01 40m - / -12 EA6Y +13 / - 3 ✓ Closing fragment
09-06 20:59 40m - / - ON5JV -4 / - 8 Partial capture
09-06 20:58 40m -18 / - BG7MOM - / -15 2 ✓ Closing fragment
09-06 20:58 40m -18 / -10 UX1VT -2 / -13 6 ✓ Full exchange observed
09-06 20:57 40m -20 / - BG4OOO - / -7 2 ✓ Closing fragment
09-06 20:54 40m -14 / - EA6Y +14 / -1 5 Partial capture
09-06 20:53 40m - / - UX1VT +3 / - 2 Partial capture
09-06 20:52 40m - / -8 IU4DTV +2 / - 2 ✓ Closing fragment
08-04 08:47 20m - / - IK3CHK -15 / - 3 Partial capture
07-21 21:49 20m -17 / - TU5MM - / -17 2 Partial capture
07-21 21:42 20m -12 / - TU5MM - / - 3 Partial capture
07-21 21:38 20m -18 / - TU5MM - / - 3 Partial capture
07-21 21:34 20m -20 / - A71YY - / - 5 Partial capture
07-17 19:13 80m - / - US1VS +5 / - 4 Partial capture
07-17 19:10 80m -18 / -12 OH1CIN +2 / - 5 ✓ Closing observed
07-17 12:07 20m - / - OE9GWV -11 / - 2 Partial capture
07-17 12:02 20m - / -20 UA7T -14 / - 5 Partial capture
07-17 11:58 20m - / -9 OK3FP -6 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
191630 +11  914  JE3GRQ Z62NS -24 (x3)
191730  +4 2387  JE3GRQ UX1AA KO70 (x3)
194745  +6  422  JE3GRQ SM5KNV -09 (x2)
194815 -10 1248  JE3GRQ R3DLK KO85 (x7)
40m 
UTC    dB Audio  Message
210130  -6 1659  JE3GRQ ON5JV JO20
210130 +15  553  JE3GRQ EA6Y JM19
210200  -4 1659  JE3GRQ ON5JV JO20
210200  +9  553  JE3GRQ EA6Y R-12
210230  -6 1659  JE3GRQ ON5JV JO20
210230 +15  553  JE3GRQ EA6Y 73
210300  -2 1659  JE3GRQ ON5JV JO20 (x2)
211615 -16 2487  CN8NS JE3GRQ PM75
211800  -8 2537  JE3GRQ R8CKD MO06 (x3)
211900 -10 2328  JE3GRQ R3MAR R-15 (x3)
20m 
UTC    dB Audio  Message
213615 -21 2130  A71YY JE3GRQ PM75
213830 -18 2130  TU5MM JE3GRQ PM75 (x10)
084745 -15 2168  JE3GRQ IK3CHK JN55 (x3)
222430  -2  816  JE3GRQ CU2AP -07

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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