E73X — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Bosnia-Herzegovina Most frequent locator attributed to this token: JN93

Receiver-side FT8 activity involving E73X, decoded by SO8OO in southeastern Poland. 852 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-06 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 852 FT8 messages attributed to E73X as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 80 m (33%) and 20 m (8%). Most decodes (60%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -4 dB.

Overview

852
Messages attributed
42
UTC dates decoded
113
Active 15-min windows
-4 dB
Estimated median S/N

Bands

80m · 282 40m · 505 20m · 65
First attributed message: 2026-06-06
Last attributed message: 2026-09-20 05:17 UTC

Observed FT8 message patterns

Attributed sample
852 messages
Active dates
42 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-17 to +11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 120, moderate (-15 to -9 dB) 161, strong (≥ -8 dB) 571.

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 E73X 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 E73X

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
JN93 · 409 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
747 km (approx.)
Last such locator decoded
2026-09-20 05:16 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 UTCBandE73X S/NCounterpartCounterpart S/NMsgsCapture
09-21 03:25 40m - / -13 RY3F +4 / - 2 ✓ Closing fragment
09-21 03:22 40m - / -9 M7ISX -2 / - 5 ✓ Closing fragment
09-21 03:16 40m - / - M0PFX -18 / - 4 Partial capture
09-20 05:16 40m -4 / - R2EA/P - / - 2 Partial capture
09-20 05:13 40m -1 / - K4KL - / -12 3 Partial capture
09-20 05:10 40m -2 / -13 R3KAB -10 / -8 5 ✓ Full exchange observed
09-20 05:07 40m -3 / - DK3TA -2 / - 3 ✓ Closing observed
09-20 05:00 40m -7 / -6 DL3AMW -2 / -10 5 Partial capture
09-03 05:54 40m -5 / - K4YT - / - 2 Partial capture
09-03 05:49 40m -1 / - R1MA -6 / -25 4 ✓ Closing observed
09-03 05:47 40m -4 / -13 DF7EE -3 / -9 3 ✓ Full exchange observed
09-03 05:45 40m -13 / - RD9M/3 - / - 2 Partial capture
09-03 05:40 40m -9 / -8 IN3LTL -10 / +1 6 ✓ Full exchange observed
09-03 05:38 40m -10 / -2 S57CT +4 / +8 5 ✓ Full exchange observed
09-03 05:36 40m -14 / - K4YT - / - 2 Partial capture
09-03 05:34 40m -20 / - IT9ECY - / -1 2 ✓ Closing fragment
09-03 05:23 40m -11 / - F4AWT -16 / -18 5 ✓ Full exchange observed
09-03 05:21 40m -11 / -2 OZ4MK -1 / -1 5 ✓ Full exchange observed
09-03 05:19 40m -16 / - EA5IT - / -11 2 ✓ Closing fragment
09-03 05:16 40m -14 / - LZ936BA - / +3 2 Partial capture
09-02 05:40 80m - / - OK5AG +1 / - 2 Partial capture
08-30 05:29 40m -5 / - <...> - / -5 2 Partial capture
08-30 01:00 80m +7 / - AA3B - / - 3 Partial capture
08-30 00:59 80m - / - F6FHZ -20 / - 2 Partial capture
08-30 00:58 80m +1 / -1 S52D +9 / - 5 ✓ Full exchange observed
08-30 00:55 80m +6 / -12 RU3GF +17 / +9 5 ✓ Full exchange observed
08-30 00:52 80m +11 / - SP1ZMO +5 / -9 10 Partial capture
08-30 00:50 80m +5 / -14 EA1CQ -11 / -17 5 ✓ Full exchange observed
08-30 00:49 80m +6 / -10 R2EN +4 / -5 5 ✓ Full exchange observed
08-30 00:43 80m +6 / +10 IR7MGGC -1 / -1 3 Partial capture
08-30 00:27 40m - / -6 AA3B +4 / - 2 ✓ Closing fragment
08-30 00:22 40m -8 / - RI1FJL - / -19 3 ✓ Closing fragment
08-30 00:05 40m - / -16 W4CHA -9 / - 3 ✓ Closing fragment
08-28 19:01 20m - / +1 OS4K -12 / - 3 Partial capture
08-28 18:36 20m - / - M8KKH +5 / - 2 Partial capture
08-28 18:11 80m +7 / - EN35UKR - / - 2 Partial capture
08-27 19:43 40m - / - HG6IOM -5 / - 3 Partial capture
08-27 19:43 40m - / - IK0XFD -2 / - 2 Partial capture
08-26 20:48 40m -10 / - 4Z5NZ - / +7 2 Partial capture
08-26 20:46 40m -7 / +5 II7MGBT -5 / - 4 Partial capture
08-26 20:45 40m -8 / - EI9KF - / - 2 Partial capture
08-24 01:27 80m +14 / -1 LZ3RG +8 / +2 6 ✓ Full exchange observed
08-24 01:26 80m +12 / -13 MM0KQC -15 / -15 4 ✓ Full exchange observed
08-24 01:25 80m +10 / - G8OO -24 / -19 3 ✓ Closing observed
08-24 01:22 80m -10 / -14 EA5HM -6 / -9 4 ✓ Full exchange observed
08-24 01:21 80m -4 / -13 EC3A -4 / -12 4 ✓ Full exchange observed
08-24 01:20 80m - / -4 DO4TYW +1 / - 2 ✓ Closing fragment
08-24 01:18 80m +6 / -5 DL9ATW -6 / 0 6 ✓ Full exchange observed
08-24 01:17 80m +1 / -1 HB10GBT -7 / -2 3 Partial capture
08-24 01:16 80m +4 / -2 EW8AAC -9 / -8 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
051415  +0  739  K4KL E73X RRR
051630  -3  739  R2EA/P E73X JN93
051645  +3 1914  E73X LZ936BA +13
051700  -5  739  R2EA/P E73X R+13
031630 -21  820  E73X M0PFX JO01 (x4)
032200  -4  955  E73X M7ISX JO01 (x5)
032530  +5  957  E73X RY3F -13 (x2)
80m 
UTC    dB Audio  Message
005830  -3 2079  S52D E73X +12
005845  +8 2081  E73X S52D R-01
005900  +5 2078  S52D E73X RR73
005915 +10 2081  E73X S52D 73
005930 +10 2079  CQ E73X JN93
005945 -16 2080  E73X F6FHZ JN18 (x2)
010030  +5 2079  AA3B E73X JN93 (x3)
054015  -1 2496  E73X OK5AG JN79
054115  -6  996  E73X SM7GIB JO65
054115  +3 2496  E73X OK5AG JN79
054115  -8 1337  CQ E73X JN93 (x2)
20m 
UTC    dB Audio  Message
183400 -10  571  E73X TN8GD RR73
190115  -4 1109  E73X DL3MIB JN57 (x7)
202545 -19 1268  JA1UQA E73X RR73
050645 -10  980  TI5RR E73X JN93
183630  +4  460  E73X M8KKH JO01 (x2)
190130 -11 1660  E73X OS4K +01 (x3)
10m 
UTC    dB Audio  Message
132415  +3 1863  E73X UR4QWW KN77 (x2)
133300  -2 2266  E73X RQ7R -09 (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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